A PoC in one session

I built a Go proof of concept of a notary service. It reviews claims about companies and signs the approved ones as Verifiable Credentials. It came from one prompt and a folder of design docs, and the day ended with it pushed to GitLab.

What runs now

  • The PoC. One Go process has a package for each service in the container diagram. It has no external dependencies and keeps all state in memory.
  • A console with a live sequence diagram. You start a use case and watch every hop between the services, from the first request to the signed credential.
  • Nine use cases as end-to-end tests over real mTLS. Each one checks acceptance criteria and invariants from the docs. They range from a claim approved by machine to a burst of 12 claims at once.
  • A Dutch console. Buttons, hints, narration and checks are in Dutch; glossary terms stay in English.

One real claim, step by step, from the PoC’s own trace

Walk

A Dataspace asks the notary to attest a KvK registration. A review agent checks it against Registry X, the engine approves, the HSM signs, and a relying party checks the VC.

submit

  1. 1notaryclientA Dataspace, dataspace-logistics, sends POST /v1/claims over mTLS.with gateway
  2. 2gatewayThe gateway checks its client certificate, role and rate limit, and forwards the claim.with claimsvc
  3. 3claimsvcThe claim service validates the evidence and saves the claim as pending, with its first messages in the outbox.with store
  4. 4gatewayThe gateway answers 202 pending. The claim exists before the reply.with claimsvc and notaryclient

review

  1. 5busThe bus carries claim.pending from the claim service to the review engine.with claimsvc and engine
  2. 6engineThe review engine looks up the rules for a KvK registration: machine review. It sends review.route.with bus
  3. 7claimsvcThe claim service moves the claim to machine_reviewing. No other package writes claim state.with bus and store
  4. 8engineThe review engine reads the evidence and asks for a KvK review.with bus and store
  5. 9agentsA KvK agent looks up company 12345678 in Registry X, finds Acme Hosting B.V., active, and sends its judgement.with bus and registry
  6. 10engineThe review engine weighs the score: 0.97, at least 0.85, so approve. It sends review.decided.with bus
  7. 11claimsvcThe claim service moves the claim to approved.with bus and store

sign

  1. 12signingThe signing service reads the approved claim, reserves its place in the status lists and builds a VC 2.0.with bus and store
  2. 13hsmThe HSM signs it with ES256.with signing
  3. 14claimsvcOn claim.signed the claim service moves the claim to signed, then activated.with signing, bus and store

use

  1. 15notaryclientThe Dataspace asks again and gets 200 activated, with the signed VC.with gateway, claimsvc and store
  2. 16relyingpartyA relying party fetches the issuer's did:web and both status lists through the gateway: the signature holds, not revoked, not suspended.with gateway
The 60 trace lines behind these steps
 1  dataspace → gateway  POST /v1/claims
 2  gateway  mTLS CN=dataspace-logistics role=dataspace ✓, rate limit ✓
    gateway → claim-service  forward submitClaim(KVK_REGISTRATION)
 3  claim-service  validate KVK_REGISTRATION evidence: ok
    claim-service → state-store  INSERT claim (pending) + outbox [claim.created, claim.pending]
    state-store → claim-service  committed v1
 4  claim-service → gateway  claim clm_e33a64f0025a pending
    gateway → dataspace  202 status=pending
 5  claim-service → message-bus  publish claim.created
    claim-service → message-bus  publish claim.pending
    message-bus → review-engine  consume claim.pending
 6  review-engine  rules[KVK_REGISTRATION]: route=machine
    review-engine → message-bus  publish review.route
 7  message-bus → claim-service  consume review.route
    claim-service → state-store  UPDATE state pending → machine_reviewing WHERE version=1
    state-store → claim-service  committed v2
    claim-service → message-bus  publish claim.state_changed
 8  message-bus → review-engine  consume claim.state_changed (machine_reviewing)
    review-engine → state-store  SELECT claim evidence
    state-store → review-engine  KVK_REGISTRATION evidence
    review-engine → message-bus  publish review.requested.KVK_REGISTRATION
 9  message-bus → review-agent  consume review.requested.KVK_REGISTRATION
    review-agent → registry  Registry X: GET /companies/12345678
    registry → review-agent  200 "Acme Hosting B.V." active=true
    review-agent → message-bus  publish claim.judgement
10  message-bus → review-engine  consume claim.judgement
    review-engine  score 0.97 ≥ approve threshold 0.85 → approve
    review-engine → message-bus  publish review.decided
11  message-bus → claim-service  consume review.decided
    claim-service → state-store  UPDATE state machine_reviewing → approved WHERE version=2
    state-store → claim-service  committed v3
    claim-service → message-bus  publish claim.state_changed
12  message-bus → signing-service  consume claim.state_changed (approved)
    signing-service → state-store  SELECT approved claim
    state-store → signing-service  approved KVK_REGISTRATION
    signing-service  allocate status index 46017 in shard 1
    signing-service  build VC 2.0 payload ([VerifiableCredential KvkRegistrationCredential])
13  signing-service → hsm  sign(sha256:d1b71aae15cc…, purpose=vc-issuance)
    hsm → signing-service  ES256 signature (#3)
14  signing-service → message-bus  publish claim.signed
    message-bus → claim-service  consume claim.signed
    claim-service → state-store  UPDATE state approved → signed WHERE version=3
    state-store → claim-service  committed v4
    claim-service → state-store  UPDATE state signed → activated WHERE version=4
    state-store → claim-service  committed v5
    claim-service → message-bus  publish claim.state_changed
    claim-service → message-bus  publish claim.state_changed
15  dataspace → gateway  GET /v1/claims/clm_e33a64f0025a
    gateway  mTLS CN=dataspace-logistics role=dataspace ✓, rate limit ✓
    gateway → claim-service  forward getClaim
    claim-service → state-store  SELECT claim clm_e33a64f0025a
    state-store → claim-service  state=activated → external activated
    claim-service → gateway  activated
    gateway → dataspace  200 status=activated
16  dataspace → gateway  GET /.well-known/did.json
    gateway → dataspace  200 OK
    dataspace → gateway  GET /v1/credentials/status/1
    gateway → dataspace  200 revocation list shard 1 (803 bytes)
    dataspace → gateway  GET /v1/credentials/status/suspension/1
    gateway → dataspace  200 suspension list shard 1 (833 bytes)

A Dataspace submits an ISO 27001 certificate that expires in 12 days. The agent is unsure, so a Verifier decides in the backoffice.

submit

  1. 1notaryclientA Dataspace, dataspace-energy, sends POST /v1/claims with an ISO 27001 certificate.with gateway
  2. 2gatewayThe gateway checks its client certificate, role and rate limit, and forwards the claim.with claimsvc
  3. 3claimsvcThe claim service validates the evidence and saves the claim as pending.with store
  4. 4gatewayThe gateway answers 202 pending.with claimsvc and notaryclient

review

  1. 5busThe bus carries claim.pending to the review engine.with claimsvc and engine
  2. 6engineThe rules for ISO 27001 say machine review first. The engine sends review.route.with bus
  3. 7claimsvcThe claim service moves the claim to machine_reviewing.with bus and store
  4. 8engineThe review engine reads the evidence and asks for an ISO 27001 review.with bus and store
  5. 9agentsThe ISO 27001 agent finds the certificate in Registry Y, valid until 2026-11-21, and sends its judgement.with bus and registry
  6. 10engineScore 0.60, between 0.25 and 0.85: the engine leaves it to a Verifier.with bus
  7. 11claimsvcThe claim service moves the claim to human_reviewing.with bus and store

decide

  1. 12notaryclientVerifier alice opens the claim through the gateway; the backoffice shows it with the agent's judgement.with gateway, backoffice and store
  2. 13backofficeShe approves. The backoffice sends her judgement as claim.judgement and answers 202. It writes no claim state.with notaryclient, gateway, store and bus
  3. 14engineThe review engine takes the Verifier's judgement: approve.with bus
  4. 15claimsvcThe claim service moves the claim to approved.with bus and store

sign

  1. 16signingThe signing service reserves its place in the status lists and builds the VC.with bus and store
  2. 17hsmThe HSM signs it with ES256.with signing
  3. 18claimsvcThe claim service moves the claim to signed, then activated.with signing, bus and store
The 67 trace lines behind these steps
 1  dataspace → gateway  POST /v1/claims
 2  gateway  mTLS CN=dataspace-energy role=dataspace ✓, rate limit ✓
    gateway → claim-service  forward submitClaim(ISO_27001)
 3  claim-service  validate ISO_27001 evidence: ok
    claim-service → state-store  INSERT claim (pending) + outbox [claim.created, claim.pending]
    state-store → claim-service  committed v1
 4  claim-service → gateway  claim clm_7a7f9c98f580 pending
    gateway → dataspace  202 status=pending
 5  claim-service → message-bus  publish claim.created
    claim-service → message-bus  publish claim.pending
    message-bus → review-engine  consume claim.pending
 6  review-engine  rules[ISO_27001]: route=machine
    review-engine → message-bus  publish review.route
 7  message-bus → claim-service  consume review.route
    claim-service → state-store  UPDATE state pending → machine_reviewing WHERE version=1
    state-store → claim-service  committed v2
    claim-service → message-bus  publish claim.state_changed
 8  message-bus → review-engine  consume claim.state_changed (machine_reviewing)
    review-engine → state-store  SELECT claim evidence
    state-store → review-engine  ISO_27001 evidence
    review-engine → message-bus  publish review.requested.ISO_27001
 9  message-bus → review-agent  consume review.requested.ISO_27001
    review-agent → registry  Registry Y: GET /certificates/ISO-27001-NORDIC-0042
    registry → review-agent  200 ISO_27001 by Kiwa Nederland B.V., valid until 2026-11-21
    review-agent → message-bus  publish claim.judgement
10  message-bus → review-engine  consume claim.judgement
    review-engine  score 0.60 between 0.25 and 0.85 → escalate to Verifier
    review-engine → message-bus  publish review.decided
11  message-bus → claim-service  consume review.decided
    claim-service → state-store  UPDATE state machine_reviewing → human_reviewing WHERE version=2
    state-store → claim-service  committed v3
    claim-service → message-bus  publish claim.state_changed
12  verifier → gateway  GET /v1/backoffice/claims/clm_7a7f9c98f580
    gateway  mTLS CN=alice role=verifier ✓, rate limit ✓
    backoffice → state-store  SELECT claim clm_7a7f9c98f580
    state-store → backoffice  claim with judgements
    gateway → verifier  200 OK
13  verifier → gateway  POST /v1/backoffice/claims/clm_7a7f9c98f580/judgement
    gateway  mTLS CN=alice role=verifier ✓, rate limit ✓
    gateway → backoffice  forward judgement: approve
    backoffice → state-store  SELECT claim clm_7a7f9c98f580
    state-store → backoffice  claim with judgements
    backoffice → message-bus  publish claim.judgement
    backoffice → gateway  judgement dispatched
    gateway → verifier  202 Accepted
14  message-bus → review-engine  consume claim.judgement
    review-engine  Verifier judgement: approve
    review-engine → message-bus  publish review.decided
15  message-bus → claim-service  consume review.decided
    claim-service → state-store  UPDATE state human_reviewing → approved WHERE version=3
    state-store → claim-service  committed v4
    claim-service → message-bus  publish claim.state_changed
16  message-bus → signing-service  consume claim.state_changed (approved)
    signing-service → state-store  SELECT approved claim
    state-store → signing-service  approved ISO_27001
    signing-service  allocate status index 43728 in shard 1
    signing-service  build VC 2.0 payload ([VerifiableCredential Iso27001Credential])
17  signing-service → hsm  sign(sha256:bcc667a821ac…, purpose=vc-issuance)
    hsm → signing-service  ES256 signature (#4)
18  signing-service → message-bus  publish claim.signed
    message-bus → claim-service  consume claim.signed
    claim-service → state-store  UPDATE state approved → signed WHERE version=4
    state-store → claim-service  committed v5
    claim-service → state-store  UPDATE state signed → activated WHERE version=5
    state-store → claim-service  committed v6
    claim-service → message-bus  publish claim.state_changed
    claim-service → message-bus  publish claim.state_changed

A KvK claim, approved and activated as in the first walk, and checked as valid by a relying party, is revoked by a Verifier. The same VC then fails, and the revocation can't be undone.

revoke

  1. 1notaryclientVerifier alice asks to revoke the claim, through the gateway.with gateway and backoffice
  2. 2backofficeThe backoffice reads the claim, sends claim.lifecycle_requested and answers 202.with store, bus, gateway and notaryclient
  3. 3claimsvcThe claim service moves the claim from activated to revoked.with bus and store
  4. 4signingThe signing service sets bit 67764 in revocation list shard 1.with bus
  5. 5hsmThe HSM signs the new list; the signing service announces statuslist.updated.with signing and bus

after

  1. 6notaryclientThe Dataspace asks for the claim and gets 200 revoked.with gateway, claimsvc and store
  2. 7relyingpartyA relying party checks the same VC it found valid before the revocation: now it fails.with gateway
  3. 8backofficeAlice tries to reinstate it. The backoffice refuses with 409: a revoked claim never changes state again.with notaryclient, gateway and store
The 38 trace lines behind these steps
 1  verifier → gateway  POST /v1/backoffice/claims/clm_72da9e6477b8/lifecycle
    gateway  mTLS CN=alice role=verifier ✓, rate limit ✓
    gateway → backoffice  forward lifecycle: revoke
 2  backoffice → state-store  SELECT claim clm_72da9e6477b8
    state-store → backoffice  claim with judgements
    backoffice → message-bus  publish claim.lifecycle_requested
    backoffice → gateway  revoke requested
    gateway → verifier  202 Accepted
 3  message-bus → claim-service  consume claim.lifecycle_requested
    claim-service → state-store  UPDATE state activated → revoked WHERE version=5
    state-store → claim-service  committed v6
    claim-service → message-bus  publish claim.state_changed
 4  message-bus → signing-service  consume claim.state_changed (revoked)
    signing-service  revocation list shard 1: bit 67764 = 1
 5  signing-service → hsm  sign(sha256:4b1d4d6b1807…, purpose=status-list)
    hsm → signing-service  ES256 signature (#6)
    signing-service → message-bus  publish statuslist.updated
 6  dataspace → gateway  GET /v1/claims/clm_72da9e6477b8
    gateway  mTLS CN=dataspace-logistics role=dataspace ✓, rate limit ✓
    gateway → claim-service  forward getClaim
    claim-service → state-store  SELECT claim clm_72da9e6477b8
    state-store → claim-service  state=revoked → external revoked
    claim-service → gateway  revoked
    gateway → dataspace  200 status=revoked
 7  dataspace → gateway  GET /.well-known/did.json
    gateway → dataspace  200 OK
    dataspace → gateway  GET /v1/credentials/status/1
    gateway → dataspace  200 revocation list shard 1 (817 bytes)
    dataspace → gateway  GET /v1/credentials/status/suspension/1
    gateway → dataspace  304 Not Modified
 8  verifier → gateway  POST /v1/backoffice/claims/clm_72da9e6477b8/lifecycle
    gateway  mTLS CN=alice role=verifier ✓, rate limit ✓
    gateway → backoffice  forward lifecycle: reinstate
    backoffice → state-store  SELECT claim clm_72da9e6477b8
    state-store → backoffice  claim with judgements
    backoffice  refused: cannot reinstate a claim in revoked; a revoked claim never changes state again (INV-trust-core-3, INV-trust-core-12)
    backoffice → gateway  409 Transition not allowed
    gateway → verifier  409 Transition not allowed

Who takes part, with lines of Go

outside the notary

  • notaryclient136 lineshow a Dataspace or Verifier calls the notary
  • relyingparty239 lineschecks a VC the way anyone shown one would
  • registry139 linesmock trade and certificate registers
  • portal458 lineswhere Customers get claims attested

the notary service, one Go process

  • gateway375 linesthe single way in
  • claimsvc211 linesthe only package that writes claim state
  • store131 linesclaims, with a version per change
  • bus181 linescarries messages between the services
  • engine159 linesroutes a claim, turns a score into a decision
  • agents167 lineseach judges one claim type
  • backoffice113 lineswhere Verifiers decide
  • signing405 linesthe only package that signs
  • hsm67 linesholds the signing key
  • audit89 lineshears every message and chains them
  • model375 linesclaims, states and messages, shared by all

around it, the harness, no steps

  • cmd/[project]52 linesstarts it all
  • notary134 lineswires the services into one process
  • demo1 220 linesruns the 9 scenarios and the console
  • trace149 linesrecords every hop; the steps come from it
  • pki110 linesmakes the certificates
  • jose118 linesbuilds and checks ES256 tokens
9 use cases, 97 checks, 21 packages in 28 Go files: 5 028 lines of Go and 994 lines of console HTML, CSS and JavaScript, no external dependencies.

Five choices and why

One service changes claim state. Only the Claim Service writes state; the other services send it messages over an in-process bus. With three writers, no single place could enforce the rules. Not picked: letting the Review Engine or the Backoffice change state themselves.

Real mTLS, checked in the gateway. The PoC makes its own CA and certificates at start-up, and the portal calls the notary like any outside party. A missing certificate gets a clear 401 instead of a failed handshake. Not picked: a fake auth header, which hides half of the security cases.

The use cases are the tests. The same code drives the console and go test. A demo that passes is a test that passes. Not picked: a separate end-to-end suite that drifts from the demo.

Where the docs are open, pick and write it down. Three design decisions were still drafts and four conflicts were open. The PoC picks an option for each, and the README lists every choice as undecided. Not picked: waiting for the decisions, which would have stopped the build on day one.

Dutch on screen, glossary terms in English. The docs require terms like Verifier, claim and Dataspace word for word. Text the notary returns, such as agent reasoning, stays English because it is API output. Not picked: translating only the HTML, which left the screen half Dutch, half English.

How I used Claude

  • One prompt for the build. I wrote: "implement a poc where i can trigger claims and show the end-to-end process for a number of use cases. (golang is the preference)". Claude read the docs and the open conflicts before writing code.
  • Repeated test runs found the bugs. Runs under the race detector exposed two ordering bugs. A status bit flipped before its re-signed list was published, and a credential could miss the verifier's judgement.
  • The real binary found one more. A route conflict crashed it on start, because the tests never built the console's routes. Claude clicked through it in Chrome and added a smoke test.
  • Skills set the style. One rewrote the README and hints for readers with ADHD: the action first, lists of at most 5. Another translated the console. When I called it without any text, I cancelled its question and named the file.
  • I steered with short answers. "do that please" got the full translation. When the push failed because the group restricts private projects, I created the project and said "push again".

What I'd tell someone starting the same

  1. Give Claude the docs and the goal, not a task list. It found the open decisions on its own.
  2. Run the tests more than once, with -race. Both ordering bugs passed on the first run.
  3. Start the real binary once. Green tests didn't prove the server started.

Next

  • Go through the open choices in the README with the architect.
  • Decide whether the agents' reasoning in the verifier inbox should be in Dutch too.

all notes

session log, Claude Code, 8 prompts

session · claude code · 8 prompts

Generated from a Claude Code session. Prompts are verbatim; tool output is cut to 6 lines.
Names in [brackets] are redacted.
Prompt:
read ../[project]-docs

implement a poc where i can trigger claims and show the end-to-end process for a number of use cases. (golang is the preference)
Tool call:
Bash(cd ~/code/[work] && ls -la && find [project]-docs -type f | head -100 && ls -la poc; which go && go v …)
Tool output:
[project]-docs/overview.md
[project]-docs/.gitignore
[project]-docs/index.md
[project]-docs/AGENTS.md
[project]-docs/CLAUDE.md
[project]-docs/tools/c4_to_drawio.py
… +97 lines
Tool call:
Bash(cd ~/code/[work]/[project]-docs && find . -type f \( -name "*.md" -o -name "*.feature" -o -name "*.mm …)
Tool output:
1064 ./trust-core/notary/features/credential-status-list/spec.md
    1124 ./context/vision.md
    1154 ./[project]/features/manage-compliance-profile/spec.md
    1173 ./[project]/features/search-participants/scenarios.feature
    1189 ./trust-core/notary/features/get-claim-status/spec.md
    1214 ./trust-core/notary/features/submit-claim/scenarios.feature
… +35 lines
Tool call:
Bash(cd ~/code/[work]/[project]-docs && for f in overview.md index.md AGENTS.md context/*.md domain/*.md t …)
Tool output:
=== overview.md
---
type: Harness Map
title: "Overview"
description: "The landscape of [project] and Trust Core, how this repository is organised, and the skills that maintain it."
---
… +364 lines
Tool call:
Bash(cd ~/code/[work]/[project]-docs/trust-core/notary && find . -type f | sort && for f in $(find . -type …)
Tool output:
<persisted-output>
Output too large (53.1KB). Full output saved to: ~/.claude/projects/~-code-[work]-poc/59e16794-b4e4-49b5-a356-83fba0905ce6/tool-results/bu4ztqs8u.txt

Preview (first 2KB):
./adr/ADR-0001-architecture-design.md
./adr/ADR-0002-notary-service.md
… +68 lines
Tool call:
Read(~/.claude/projects/~-code-[work]-poc/59e16794-b4e4-49b5-a356-83fba0905ce6/tool-results/bu4zt …)
Tool output:
1	./adr/ADR-0001-architecture-design.md
2	./adr/ADR-0002-notary-service.md
3	./adr/ADR-0004-poc-scope.md
4	./adr/ADR-0005-claim-state-ownership-and-messaging.md
5	./adr/ADR-0006-credential-profile-and-subject-binding.md
6	./adr/ADR-0007-evidence-document-handling.md
… +1379 lines
Tool call:
Bash(cd ~/code/[work]/[project]-docs && cat trust-core/notary/contract/C0001-trust-core-notary.openapi.yam …)
Tool output:
openapi: 3.1.0
info:
  title: [client] Trust Core — Notary
  version: 1.0.0
  description: >
    Contract a data space implements against to submit a claim about a participant
… +731 lines
Claude:
I've read the domain, Notary and [project] docs; skimming the backlog for conflicts I need to pick a side on, then I'll build.
Tool call:
Bash(cd ~/code/[work]/[project]-docs && cat backlog/conflicts.md | head -80; grep -n "^|\|^- \*\*G" backlo …)
Tool output:
---
type: Conflicts
title: "Conflicts"
description: "Open contradictions between documents and subdomains, each with a proposed resolution and an owner to decide."
---

… +22 lines
Tool call:
Bash(ls -la && mkdir -p cmd/[project] internal/{trace,bus,pki,jose,registry,notaryclient,relyingparty,portal,demo/web} intern …)
Tool output:
Command did not complete within its 120s timeout and was moved to the background (ID: b4555j692). Output is being written to: [tmp] You will be notified when it completes. To check interim output, use Read on that file path.
Tool call:
Bash(cat [tmp] …)
Tool output:
Exit code 2
"~/code/[work]/poc/internal": No such file or directory (os error 2)
Tool call:
Bash(mkdir -p ~/code/[work]/poc/cmd/[project] ~/code/[work]/poc/internal/{trace,bus,pki,j …)
Tool output:
bus
demo
jose
notary
notaryclient
pki
… +4 lines
Tool call:
Write(~/code/[work]/poc/go.mod)
Tool output:
File created successfully at: ~/code/[work]/poc/go.mod (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/trace/trace.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/trace/trace.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/bus/bus.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/bus/bus.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/pki/pki.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/pki/pki.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/jose/jose.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/jose/jose.go (file state is current in your context — no need to Read it back)
Claude:
Infrastructure (trace, bus, PKI, JOSE) is written; now the Notary domain model and store.
Tool call:
Write(~/code/[work]/poc/internal/notary/model/model.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/model/model.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/model/claimtypes.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/model/claimtypes.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/model/messages.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/model/messages.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/store/store.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/store/store.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/registry/registry.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/registry/registry.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/agents/agents.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/agents/agents.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/claimsvc/claimsvc.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/claimsvc/claimsvc.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/notary/engine/engine.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/engine/engine.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/backoffice/backoffice.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/backoffice/backoffice.go (file state is current in your context — no need to Read it back)
Claude:
Claim Service, Review Engine, agents and Backoffice are written. Next: HSM, Signing Service with the status list, and the audit log.
Tool call:
Write(~/code/[work]/poc/internal/notary/hsm/hsm.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/hsm/hsm.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/signing/statuslist.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/signing/statuslist.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/notary/signing/signing.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/signing/signing.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/audit/audit.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/audit/audit.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/gateway/gateway.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/gateway/gateway.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/notary/notary.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notary/notary.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(go build ./... && go vet ./...)
Tool output:
(Bash completed with no output)
Claude:
The Notary Service compiles. Now the Dataspace client, the relying-party verifier and the [project] Portal.
Tool call:
Write(~/code/[work]/poc/internal/notaryclient/client.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/notaryclient/client.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/relyingparty/verify.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/relyingparty/verify.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/portal/portal.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/portal/portal.go (file state is current in your context — no need to Read it back)
Claude:
Portal written. Now the demo layer: environment wiring, the scenario runner with the use cases, and the console API.
Tool call:
Write(~/code/[work]/poc/internal/demo/env.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/env.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/demo/runner.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/runner.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/demo/scenarios.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/scenarios.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Tool call:
Write(~/code/[work]/poc/internal/demo/server.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/server.go (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/demo/scenarios_test.go)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/scenarios_test.go (file state is current in your context — no need to Read it back)
Tool call:
Bash(echo '<!doctype html><title>x</title>' > internal/demo/web/index.html && go vet ./... && go test ./... -count=1 2>&1 | t …)
Tool output:
scenarios_test.go:37: aborted: Post "https://localhost:49290/v1/claims": tls: failed to verify certificate: x509: certificate specifies an incompatible key usage
        scenarios_test.go:39: generic-human: 0 checks, failed
    --- FAIL: TestScenarios/input-security (0.02s)
        scenarios_test.go:37: aborted: Post "https://localhost:49290/v1/claims": tls: failed to verify certificate: x509: certificate specifies an incompatible key usage
        scenarios_test.go:39: input-security: 0 checks, failed
    --- FAIL: TestScenarios/revocation (0.02s)
… +34 lines
Claude:
Wiring works; the CA template carried a client-only key usage that broke server-cert verification. Fixing.
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	0.832s
Claude:
All nine scenarios pass. Let me look at check counts and run with the race detector.
Tool call:
Bash(go test ./internal/demo/ -count=3 -race -v 2>&1 | grep -E "checks|FAIL|ok|DATA RACE|✗" | head -40)
Tool output:
scenarios_test.go:39: kvk-happy: 9 checks, passed
    scenarios_test.go:39: kvk-mismatch: 5 checks, passed
    scenarios_test.go:39: iso-escalation: 10 checks, passed
    scenarios_test.go:39: generic-human: 7 checks, passed
    scenarios_test.go:39: input-security: 15 checks, passed
    scenarios_test.go:39: revocation: 9 checks, passed
… +30 lines
Claude:
A real ordering bug: the bit flips in memory before the re-signed shard is published, so a verifier can briefly read the stale list. Making flip-and-sign commit together.
Tool call:
Read(~/code/[work]/poc/internal/notary/signing/statuslist.go)
Tool output:
40	}
41
42	type shard struct {
43		id     int
44		used   map[int]bool
45		bits   map[string][]byte
… +164 lines
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	5.989s
Claude:
Stable across 8 race-detector runs. Now main and the web console.
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
(Bash completed with no output)
Claude:
Now the console UI: a live sequence diagram plus tabs for scenarios, Verifier, Portal, Dataspace playground and an inspector.
Tool call:
Write(~/code/[work]/poc/internal/demo/web/index.html)
Tool output:
The file ~/code/[work]/poc/internal/demo/web/index.html has been updated successfully. (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/demo/web/style.css)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/web/style.css (file state is current in your context — no need to Read it back)
Tool call:
Write(~/code/[work]/poc/internal/demo/web/app.js)
Tool output:
File created successfully at: ~/code/[work]/poc/internal/demo/web/app.js (file state is current in your context — no need to Read it back)
Claude:
Now running it for real and checking the console in a browser.
Tool call:
Bash(go vet ./... && go build -o [tmp] …)
Tool output:
OK
Tool call:
Bash([tmp] -a …)
Tool output:
Command running in background with ID: bmmtjg778. Output is being written to: [tmp] You will be notified when it completes — do not poll that file or sleep while waiting. Read the file only if the user asks for progress, or if you need a line it prints before you can go on, such as a server's ready line or port.
Tool call:
tabs_context_mcp (MCP)()
Tool output:
{"availableTabs":[{"tabId":875939192,"title":"New Tab","url":"chrome://newtab/"}],"tabGroupId":595661259}


Tab Context:
- Available tabs:
  • tabId 875939192: "New Tab" ("chrome://newtab/")
Tool call:
Bash(cat [tmp] …)
Tool output:
panic: pattern "/portal/" (registered at ~/code/[work]/poc/internal/demo/server.go:58) conflicts with pattern "GET /" (registered at ~/code/[work]/poc/internal/demo/server.go:57):
	/portal/ matches more methods than GET /, but has a more specific path pattern

goroutine 1 [running]:
net/http.(*ServeMux).register(...)
	/opt/homebrew/Cellar/go/1.27.3/libexec/src/net/http/server.go:2977
… +8 lines
Claude:
The test didn't build the console mux. Fixing the route conflict and adding a handler smoke test so this is covered.
Tool call:
Bash(sed -i '' 's|mux.Handle("GET /", http.FileServerFS(static))|mux.Handle("/", http.FileServerFS(static))|' internal/demo/s …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	1.986s
[This command modified 2 files you've previously read: internal/demo/server.go, internal/demo/scenarios_test.go. Call Read before editing.]
Tool call:
Bash([tmp] -a …)
Tool output:
Command running in background with ID: bt5ulbko1. Output is being written to: [tmp] You will be notified when it completes — do not poll that file or sleep while waiting. Read the file only if the user asks for progress, or if you need a line it prints before you can go on, such as a server's ready line or port.
Tool call:
browser_batch (MCP)()
Tool output:
[navigate] Navigated to http://localhost:8089/
[computer:screenshot] Successfully captured screenshot (840x518, jpeg) - ID: ss_8649d0nfv — 0.6-scale view; coordinate frame: 1400x864.
[screenshot]


Tab Context:
… +3 lines
Claude:
The page loads. The empty detail box in the bottom right is a CSS display rule overriding hidden. Fixing that, then running a scenario.
Tool call:
Bash(sed -i '' 's|^\* { box-sizing: border-box; }|* { box-sizing: border-box; }\n[hidden] { display: none !important; }|' int …)
Tool output:
48:[hidden] { display: none !important; }
[This command modified 1 file you've previously read: internal/demo/web/style.css. Call Read before editing.]
Tool call:
Bash([tmp] -a …)
Tool output:
Command running in background with ID: bfkgyjyi1. Output is being written to: [tmp] You will be notified when it completes — do not poll that file or sleep while waiting. Read the file only if the user asks for progress, or if you need a line it prints before you can go on, such as a server's ready line or port.
Tool call:
browser_batch (MCP)()
Tool output:
[navigate] Navigated to http://localhost:8089/
[computer:left_click] Clicked at (47, 360)
[computer:wait] Waited for 10 seconds
[computer:wait] Waited for 5 seconds

actions[4] (computer:screenshot) failed: Error capturing screenshot: Frame with ID 0 is showing error page (4 completed, 0 remaining)
Tool call:
browser_batch (MCP)()
Tool output:
[navigate] Navigated to http://localhost:8089/
[computer:left_click] Clicked at (47, 360)
[computer:wait] Waited for 10 seconds
[computer:wait] Waited for 6 seconds
[computer:screenshot] Successfully captured screenshot (1400x859, jpeg) - ID: ss_55832v1ra
[screenshot]
… +6 lines
Claude:
The end-to-end flow renders as intended. Arrow labels between adjacent lanes are cut off, so I'll give them more room. Then I'll test the manual Verifier path.
Tool call:
Bash(sed -i '' 's|const lw = Math.max(width, 150);|const lw = Math.max(width, 250);|' internal/demo/web/app.js && grep -n "co …)
Tool output:
151:  const lw = Math.max(width, 250);
[This command modified 1 file you've previously read: internal/demo/web/app.js. Call Read before editing.]
Tool call:
browser_batch (MCP)()
Tool output:
[computer:left_click] Clicked at (23, 121)
[computer:left_click] Clicked at (47, 797)
[computer:wait] Waited for 8 seconds
[computer:left_click] Clicked at (118, 77)
[computer:wait] Waited for 2 seconds
[computer:screenshot] Successfully captured screenshot (1451x840, jpeg) - ID: ss_4443ejatg
… +7 lines
Claude:
Escalation, banner and inbox all work. Approving as the Verifier:
Tool call:
browser_batch (MCP)()
Tool output:
[computer:left_click] Clicked at (196, 389)
[computer:type] Typed "Confirmed with Kiwa; renewal audit planned."
[computer:left_click] Clicked at (63, 471)
[computer:wait] Waited for 6 seconds
[computer:screenshot] Successfully captured screenshot (1016x588, jpeg) - ID: ss_6050o71in — 0.7-scale view; coordinate frame: 1451x840.
[screenshot]
… +6 lines
Claude:
The manual Verifier path works end to end. Now a quick check of the Portal tab after the [project] scenario:
Tool call:
find (MCP)(Run button of '[project]: Customers, compliance profiles and search' card, and the Scenarios tab)
Tool output:
69 elements share words with the query; the 20 closest:
ref_122 heading "[project]: Customers, compliance profiles and search" (hidden)
ref_130 button "Run" in "[project]: Customers, compliance profiles and se…" (hidden)
ref_12 tab "Scenarios"
ref_147 button "Run periodic re-check now"
ref_8 button "Toggle light and dark"
… +21 lines
Tool call:
browser_batch (MCP)()
Tool output:
[computer:left_click] Clicked on element ref_12
[computer:scroll_to] Scrolled to element with reference: ref_130
[computer:left_click] Clicked on element ref_130
[computer:wait] Waited for 10 seconds
[computer:wait] Waited for 10 seconds
[computer:left_click] Clicked on element ref_14
… +9 lines
Claude:
The Portal and the relying-party ETag caching (304) work. Checking for browser console errors:
Tool call:
read_console_messages (MCP)()
Tool output:
No console errors or exceptions found for this tab.

Note: Console tracking starts when this tool is first called. If the page loaded before calling this tool, you may need to refresh the page to capture console messages from page load.


Tab Context:
… +3 lines
Claude:
Now the README. It records the decisions the PoC had to take where the ADRs are still open, so the architect can compare them with the docs.
Tool call:
Write(~/code/[work]/poc/README.md)
Tool output:
File created successfully at: ~/code/[work]/poc/README.md (file state is current in your context — no need to Read it back)
Tool call:
Bash(gofmt -l . ; gofmt -w . && go vet ./... && go test ./... -count=1 -race 2>&1 | grep -v "no test files"; pkill -f "scratc …)
Tool output:
internal/notary/hsm/hsm.go
internal/notary/model/messages.go
ok  	github.com/enrise/[project]-poc/internal/demo	2.149s
Claude:
One more fix: the HSM logs digest[:6] before it checks the length, so a short digest would panic.
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
--- FAIL: TestScenarios (0.43s)
    --- FAIL: TestScenarios/iso-escalation (0.06s)
        scenarios_test.go:50: ✗ the VC records a human review as evidence ()
        scenarios_test.go:56: iso-escalation: 10 checks, failed
FAIL
FAIL	github.com/enrise/[project]-poc/internal/demo	0.829s
… +6 lines
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	9.470s
Tool call:
tabs_close_mcp (MCP)()
Tool output:
Closed tab 875939192. Group is now empty (auto-removed).


Tab Context:
- Available tabs:
Claude:
I've built the PoC in poc/. It's pure Go with no external dependencies and keeps all state in memory. You start a use case from a web console and watch every step between the services as a live sequence diagram. All nine use cases pass as end-to-end tests over real mTLS, 15 runs in a row with the race detector. I also ran it in Chrome: the automatic flow, approving an escalated claim by hand as the Verifier, and the Portal journey all worked, with no console errors.

```sh
cd poc && go run ./cmd/[project]   # console: http://localhost:8080 · Notary: https://localhost:8443 (mTLS)
go test ./...                      # runs every use case end to end
```

What runs:
- Notary Service: one Go process with a package per service from the container diagram (ADR-0009 S1). Each piece follows the docs:- an API Gateway that checks client certificates and rate-limits, answering 401, 429 and problem details;- a Claim Service that is the only one allowed to change claim state;- an in-process message bus with retries;- a Review Engine with per-claim-type thresholds;- Review Agents that check mock Registry X/Y, with two KvK agents sharing the work;- the Backoffice Backend for Verifiers;- a Signing Service that sends only a hash and a purpose to a software HSM;- Bitstring Status List shards with ETag/304;- a hash-chained Audit Log.- [project] Portal: a separate module that calls the Notary over mTLS with its own certificate, like any other Dataspace.- Console tabs:- Scenarios: start a use case; each one checks its acceptance criteria and invariants (✓/✗). With Auto-Verifier off, the run waits for you in the Verifier tab.- Verifier: approve or reject escalated claims; suspend, reinstate or revoke; mark a company inactive in Registry X.- Portal: act as a Customer: profiles, search, hide, download.- Dataspace: send raw contract calls, including with no certificate or an untrusted one.- Inspect: claims, audit log, status lists.- Copy as Mermaid exports the diagram so you can compare it with F0002.
Use cases: KvK approved by machine · KvK name mismatch, rejected · ISO 27001 escalated to a Verifier · GENERIC claim, Verifier only · invalid input, auth and rate limits · revocation · periodic re-check suspends, Verifier reinstates · [project] Customer journey (compliance profiles, search warnings, hidden claim counts as missing, download the unaltered VC) · a burst of 12 claims at once.

Decisions the docs leave open. To make it run I had to pick options in the draft ADRs (0005, 0006, 0008) and several open conflicts (C-002, C-016, C-017, C-018). README.md has a table of each choice; none of them are decided. The ones to look at first:
- The VC uses VC 2.0 with the credential as the JWT payload (ADR-0006 E1). The contract text still describes a vc claim (E2).- The Notary trusts the submitting Dataspace and does not check that the subject controls the DID (B3).- Status lists are public, with a separate suspension list. I added /v1/credentials/status/suspension/{id}, GET /v1/claim-types and Verifier lifecycle and re-check endpoints. These are proposed contract additions; I haven't changed the C0001 OpenAPI file.
Limitations:
- The Portal refreshes a Customer's claims only when that Customer opens them. So a revocation shows up in search only after that refresh.- When a periodic re-check passes, the claim stays activated. That judgement is only in the audit log, not on the claim.- There is no persistence, real HSM, encryption at rest or supporting-document handling.- poc/ is not a git repository yet.
Prompt:
/anthropic-skills:neerlandsch
Tool call:
AskUserQuestion(Je riep /neerlandsch aan zonder tekst erbij. Welke tekst moet ik in deze stijl schrijven of redigeren?)
Tool output:
The user doesn't want to proceed with this tool use. The tool use was rejected (eg. if it was a file edit, the new_string was NOT written to the file). STOP what you are doing and wait for the user to tell you how to proceed.

Note: The user's next message may contain a correction or preference. Pay close attention — if they explain what went wrong or how they'd prefer you to work, consider saving that to memory for future sessions.
Tool output:
[Request interrupted by user for tool use]
Prompt:
/i-have-adhd:i-have-adhd please check docs at all depths andapply rules in i have adhd
Tool call:
Bash(find . -type f \( -name "*.md" -o -name "*.txt" -o -name "*.html" \) -not -path "./.git/*" | sort)
Tool output:
./internal/demo/web/index.html
./README.md
Claude:
Two docs exist: README.md and the console page internal/demo/web/index.html. Rewriting both to the ADHD rules.
Tool call:
Write(~/code/[work]/poc/README.md)
Tool output:
The file ~/code/[work]/poc/README.md has been updated successfully. (file state is current in your context — no need to Read it back)
Tool call:
Bash(cd ~/code/[work]/poc/internal/demo/web && python3 - <<'EOF' …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	1.132s
Claude:
Next: run go run ./cmd/[project] in poc/, open <http://localhost:8080> and read the empty-state line. It now says what to click.

I looked through every folder in poc/. It has two docs, and both now follow the ADHD rules:

1. **README.md** (rewritten)- The first line is the run command, followed by 3 numbered start steps with times (about 5 s to start, about 10 s per scenario).- Every long table is split into groups of at most 5 rows. That covers the scenarios, the code packages and the choices made where the ADRs are open.- The prose is cut down to "do this there" lines. The known gaps are a numbered list of 3.2. **internal/demo/web/index.html** (console text)- The 5 hint texts now start with the action, for example "Click Run on a scenario on the left" and "Write your reasoning, then click Approve or Reject".
go test ./... still passes.

The 9 scenario descriptions in the console cards are 3–4 sentences each. They live in Go code (internal/demo/scenarios.go), not in a doc. Should I cut them to one line each?
Prompt:
/anthropic-skills:neerlandsch internal/demo/web/index.html
Tool call:
Read(~/code/[work]/poc/internal/demo/web/index.html)
Tool output:
1	<!doctype html>
2	<html lang="en">
3	<head>
4	<meta charset="utf-8">
5	<meta name="viewport" content="width=device-width, initial-scale=1">
6	<title>[project] PoC</title>
… +139 lines
Tool call:
Bash(cd ~/code/[work]/poc/internal/demo/web && grep -n "'Run'\|'Approve'\|'Reject'\|'Copied'\|'Copy as Merm …)
Tool output:
240:        h('button', { class: 'primary', type: 'button', text: 'Run', onclick: () => runScenario(sc.id) }),
264:  sel.replaceChildren(h('option', { value: '', text: 'All activity' }),
327:      h('button', { class: 'primary', type: 'button', text: 'Approve', onclick: () => judge('approve') }),
328:      h('button', { class: 'danger', type: 'button', text: 'Reject', onclick: () => judge('reject') }), out));
574:    try { await navigator.clipboard.writeText(toMermaid()); e.target.textContent = 'Copied'; }
576:    setTimeout(() => { e.target.textContent = 'Copy as Mermaid'; }, 1500);
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
7:Then open <http://localhost:8080> and click **Run** on the first scenario. You see every hop of a claim, from Dataspace
14:3. Click **Run** on "KvK registration, approved by machine". It finishes in about 10 seconds.
41:| **Scenarios** | Click **Run**. Each step and check (✓/✗) shows up in the diagram. |
42:| **Verifier** | Approve or reject escalated claims. Suspend, reinstate or revoke activated ones. |
49:To compare with `trust-core/notary/flow/F0002-container-flows.md`: click **Copy as Mermaid**.
131:| C-017: decision rule | Approve at score ≥ 0.85, reject at ≤ 0.25, otherwise a Verifier decides. |
… +1 lines
Claude:
The README names button labels that just changed. Updating those references:
Tool call:
Bash(cd ~/code/[work]/poc && python3 - <<'EOF' …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	0.770s
Claude:
The fixed text on the console page is now in Dutch. To see it, run go run ./cmd/[project] in poc/ and open <http://localhost:8080>.

**What changed in index.html:**

1. Language: lang="nl", every heading, hint, button and label in Dutch, addressing the reader as *je*. For example "Je bent Verifier alice. Schrijf je onderbouwing en klik op Goedkeuren of Afwijzen."2. Kept in English: terms from the docs glossary, because [project]-docs requires them word for word. That covers Verifier, Customer, Participant, Dataspace, claim, Attestation, compliance profile and Audit Log. Technical terms stay too: VC, DID, POST, Mermaid, relying party, re-check.3. Headings: capital letter only at the start, no full stop. For example "Attestation aanvragen", "Participants zoeken", "Levenscyclus".4. Checklist: no passive voice, none of the banned words, at most 2 sentences per hint. The parts for full publications (structure, colofon, page layout) don't apply to a screen.5. **Labels in app.js the page refers to**: Start, Goedkeuren, Afwijzen, Alle activiteit, Kopiëren als Mermaid. Without these, the Dutch hints would point to buttons that still had English names.
The README (still in English) now uses the new button and tab names and says the console is in Dutch. Tests pass.

Still in English (all in app.js):
- the waiting banner;- the other buttons and empty-list messages ("Nothing to review.", "Download VC");- the scenario titles and descriptions.
That makes the screen half Dutch, half English. Translating it all is about 20 minutes of work. Should I do that next?
Prompt:
do that please
Tool call:
Bash(cd ~/code/[work]/poc/internal/demo/web && grep -n "text: '[A-Z][a-z]\|text: \`\|'[A-Z][a-z][a-z ]*[a-z …)
Tool output:
172:  chip.replaceChildren(id ? 'claim ' + id : '', h('button', { title: 'Remove filter', text: '✕', onclick: () => setClaimFilter('') }));
229:      h('summary', { text: `${r.checks.filter(c => c.ok).length}/${r.checks.length} checks · ${r.id}` }),
236:      h('p', { text: sc.summary }),
240:        h('button', { class: 'primary', type: 'button', text: 'Start', onclick: () => runScenario(sc.id) }),
241:        r ? h('button', { type: 'button', text: 'Show run', onclick: () => selectRun(r.id) }) : null,
264:  sel.replaceChildren(h('option', { value: '', text: 'Alle activiteit' }),
… +35 lines
Tool call:
Read(~/code/[work]/poc/internal/demo/web/app.js)
Tool output:
160	  $('#detailTitle').textContent = `${e.from || ''}${e.to && e.to !== e.from ? ' → ' + e.to : ''}  ${e.label}`;
161	  const body = { ...e, detail: withDecodedJwts(e.detail) };
162	  $('#detailBody').textContent = fmtJSON(body);
163	  if (e.claimId) {
164	    const btn = h('button', { class: 'link', text: 'filter on ' + e.claimId, onclick: () => setClaimFilter(e.claimId) });
165	    $('#detailTitle').append(' ', btn);
… +414 lines
Tool call:
Read(~/code/[work]/poc/internal/demo/web/app.js)
Tool output:
580	  $('#lifeRefresh').onclick = loadLifecycle;
581	  $('#recheckAll').onclick = () => api('/api/verifier/recheck', { method: 'POST' });
582	  $('#customer').onchange = e => { S.customer = e.target.value; renderReqFields(); loadMyClaims(); loadProfiles(); $('#searchOut').replaceChildren(); };
583	  $('#reqType').onchange = renderReqFields;
584	  $('#requestForm').onsubmit = async ev => {
585	    ev.preventDefault();
… +41 lines
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
ok
Claude:
app.js is done. Now the scenario texts in Go (titles, descriptions, step narration and checks in the diagram).
Tool call:
Read(~/code/[work]/poc/internal/demo/scenarios.go)
Tool output:
18	const wait = 30 * time.Second
19
20	var Scenarios = []Scenario{
21		{
22			ID: "kvk-happy", Title: "KvK registration, approved by machine",
23			Summary: "A Dataspace submits a KvK claim. The KvK Review Agent finds an exact match in Registry X, the Review Engine approves, the Signing Service signs in the HSM and the claim is activated. A relying party then verifies the VC and its status lists.",
… +74 lines
Tool call:
Bash(cd ~/code/[work]/poc/internal/demo && grep -on '"[^"]*[a-z][a-z ]\{6,\}[^"]*"' scenarios.go runner.go  …)
Tool output:
scenarios.go:4:"encoding/json"
scenarios.go:8:"strings"
scenarios.go:22:"KvK registration, approved by machine"
scenarios.go:23:"A Dataspace submits a KvK claim. The KvK Review Agent finds an exact match in Registry X, the Review Engine approves, the Signing Service signs in the HSM and the claim is activated.
scenarios.go:24:"get-claim-status AC1, AC3"
scenarios.go:24:"claim-review AC1, AC4"
… +194 lines
Claude:
API Error: Connection lost mid-response. The response above may be incomplete.
Prompt:
please continue, good job
Tool call:
Bash(sed -n '425,470p;470,520p' scenarios.go | grep -n 'r\.step\|r\.check\|"' | grep -v 'map\[string\]string{"kvk\|"certifica …)
Tool output:
1:	r.step("Nordic searches for KVK_REGISTRATION with the \"Hosting partner\" profile")
3:	r.portal("nordic", http.MethodGet, "/portal/participants?claimType=KVK_REGISTRATION&profile="+hosting.ID, nil, &res)
4:	acme, dijkstra, polder := find(res, "acme"), find(res, "dijkstra"), find(res, "polder")
5:	r.check(acme != nil && dijkstra != nil && polder != nil, "search-participants AC1: Participants with an attested KvK claim are found")
6:	r.check(acme != nil && acme.Warning == "", "search-participants AC4: Acme meets the profile, no warning")
7:	r.check(dijkstra != nil && slices.Contains(dijkstra.Missing, model.ISO27001), "search-participants AC3: Dijkstra lacks ISO_27001 → warning",
… +55 lines
Claude:
Continuing with the Go strings: scenario titles, descriptions, narration, checks and the runner and server messages.
Tool call:
Bash(sed -n '60,92p;130,140p;196,200p' runner.go && sed -n '515,525p' scenarios.go)
Tool output:
}

type abort struct{ err error }

func (r *Run) execute(s Scenario) {
	defer func() {
… +53 lines
Tool call:
Bash(cat > [tmp]  …)
Tool output:
not applied: []
Claude:
All strings applied. The Verifier outcome (approve/reject) still appears as a code value in the Dutch sentences; mapping it to Goedkeuren/Afwijzen:
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
ok  	github.com/enrise/[project]-poc/internal/demo	0.766s
Claude:
Tests pass. The README still names the scenarios by their English titles, so I'm updating those, then checking the screen.
Tool call:
Bash(python3 - <<'EOF' …)
Tool output:
built
Tool call:
Bash([tmp] -a …)
Tool output:
Command running in background with ID: by275gz26. Output is being written to: [tmp] You will be notified when it completes — do not poll that file or sleep while waiting. Read the file only if the user asks for progress, or if you need a line it prints before you can go on, such as a server's ready line or port.
Tool call:
tabs_context_mcp (MCP)()
Tool output:
{"availableTabs":[{"tabId":875939230,"title":"New Tab","url":"chrome://newtab/"}],"tabGroupId":1083759306}


Tab Context:
- Available tabs:
  • tabId 875939230: "New Tab" ("chrome://newtab/")
Tool call:
browser_batch (MCP)()
Tool output:
[navigate] Navigated to http://localhost:8089/
[computer:left_click] Clicked at (23, 121)
[find] 23 elements share words with the query; the 20 closest:
ref_46 button "Start" in "ISO 27001 twijfelachtig, door naar een Verifier H…"
ref_31 button "Start" in "KvK-registratie, goedgekeurd door de machine Een …"
ref_38 button "Start" in "KvK-naam klopt niet, afgewezen door de machine De…"
… +23 lines
Tool call:
browser_batch (MCP)()
Tool output:
[computer:left_click] Clicked on element ref_46
[computer:wait] Waited for 9 seconds
[computer:left_click] Clicked on element ref_13
[computer:wait] Waited for 2 seconds
[computer:screenshot] Successfully captured screenshot (1400x864, jpeg) - ID: ss_4223ofukz
[screenshot]
… +6 lines
Claude:
The Dutch text renders as intended: the banner, the inbox, the buttons, the narration and the checks. Cleaning up.
Tool call:
tabs_close_mcp (MCP)()
Tool output:
Closed tab 875939230. Group is now empty (auto-removed).


Tab Context:
- Available tabs:
Tool call:
Bash(pkill -f "scratchpad/[project] -addr localhost:8089"; true)
Tool output:
(Bash completed with no output)
Claude:
To try it: run go run ./cmd/[project] in poc/, open <http://localhost:8080>, untick Auto-Verifier and start "ISO 27001 twijfelachtig, door naar een Verifier".

The console text is now fully Dutch. I ran exactly that scenario in Chrome: the waiting banner, the inbox, Goedkeuren/Afwijzen and the checks all appear in Dutch. go test ./... passes.

What's translated:
1. **app.js**: all buttons, empty-list messages, placeholders, the waiting banner, the run status (geslaagd, mislukt, wacht op jou, bezig) and the Inspectie labels. Scores show with a decimal comma (0,60).2. Scenarios: the 9 titles and descriptions, every narration step and every check in the diagram. AC and INV codes stay as they are.3. Messages that used to come straight from the API: the result of a VC verification and the warning in Participant search are now written in Dutch on screen. The Portal claim type list shows the claim type code (KVK_REGISTRATION) instead of the Notary's English title.4. README: scenario names and button names match the screen. The rest of the README stays English, like [project]-docs.
Deliberately still English:
- terms from the [project]-docs glossary: Verifier, claim, Dataspace, compliance profile, Audit Log;- claim states (pending, activated and so on);- technical labels on the diagram arrows (HTTP calls, topics, SQL);- text the Notary itself returns: the agents' reasoning, problem details, Portal error messages. These are API output, not console text.
Should the agents' reasoning (for example "certificate is valid but expires in 11 days") also be in Dutch? It appears in the Verifier inbox. That's about 10 minutes of work in internal/notary/agents/agents.go.
Prompt:
commit and push to https://[gitlab]/[client]/poc
Tool call:
Bash(git config --global user.email; git config --global user.name; cat .gitignore; git ls-remote https://[gitlab]/a …)
Tool output:
[email]
Alen
/[project]
remote:
remote: ========================================================================
remote:
… +2 lines
Claude:
HTTPS gives "project not found or no permission". Trying SSH:
Tool call:
Bash(git ls-remote [email]:[client]/poc.git 2>&1 | head -5; echo "exit=$?")
Tool output:
remote:
remote: ========================================================================
remote:
remote: The project you were looking for could not be found or you don't have permission to view it.
remote:
exit=0
Claude:
Both say the project doesn't exist or isn't visible. Checking whether SSH auth works at all:
Tool call:
Bash(ssh -o BatchMode=yes -T [email] 2>&1 | head -3; which glab && glab auth status 2>&1 | head -5)
Tool output:
Welcome to GitLab, @[me]!
/opt/homebrew/bin/glab
gitlab.com
  x gitlab.com: API call failed: GET https://gitlab.com/api/v4/user: 401 {message: 401 Unauthorized}
  ✓ Git operations for gitlab.com configured to use ssh protocol.
  ✓ API calls for gitlab.com are made over https protocol.
… +1 lines
Claude:
SSH auth works (as [me]), but [client]/poc isn't visible yet. GitLab creates a project on first push if you have rights in the [client] group. Committing locally, then pushing:
Tool call:
Bash(git init -b main -q && git add -A && git status --short && git commit -q -F - <<'EOF' …)
Tool output:
A  .gitignore
A  README.md
A  cmd/[project]/main.go
A  go.mod
A  internal/bus/bus.go
A  internal/demo/env.go
… +29 lines
Tool call:
Bash(git push -u origin main 2>&1 | tail -15)
Tool output:
remote:
remote: ========================================================================
remote:
remote: Could not create project: Visibility level private has been restricted by your GitLab administrator
remote:
remote: ========================================================================
… +5 lines
Claude:
The commit is ready locally, but the push failed. GitLab can't create [client]/poc for you: "Visibility level private has been restricted by your GitLab administrator."

Done locally:
- poc/ is now a git repo on main, with 1 commit (25353aa, 34 files, no attribution lines).- The remote origin is set to [email]:[client]/poc.git. HTTPS gave "not found", but SSH logs you in as [me].
To finish (about 2 minutes):
1. Open <https://[gitlab]/[client]> → New project → Create blank project.2. Name it poc, choose a visibility the group allows (likely *Internal*), and untick "Initialize repository with a README".3. Push by typing this in the prompt: ! git -C ~/code/[work]/poc push -u origin main
If New project isn't available to you in the [client] group, a group Maintainer needs to create the project.
Prompt:
created the project, push again
Tool call:
Bash(git push -u origin main 2>&1 | tail -8)
Tool output:
To [gitlab]:[client]/poc.git
 * [new branch]      main -> main
branch 'main' set up to track 'origin/main'.
Claude:
It's pushed: <https://[gitlab]/[client]/poc> now has main with commit 25353aa, and your local main tracks origin/main.

Next: open the project page and check that the README shows.

hire me

I work with a few people at a time. When there's room, I call the next one on my list.

Only I read this. I delete it once we've spoken.