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probe: verbatim commands with an exact-match allowlist #138

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Merged
yihanzhu merged 1 commit into from
Aug 27, 2026
Merged

probe: verbatim commands with an exact-match allowlist #138

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17 changes: 10 additions & 7 deletions .github/workflows/plumbing-test.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -34,17 +34,20 @@ jobs:
with:
claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
prompt: |
This is a plumbing probe. Do exactly this and nothing else:
This is a plumbing probe. Run EXACTLY these commands, verbatim, in
order — do not substitute flags or add commands:
1. git checkout -b plumbing-probe-${{ github.run_id }}
2. Write one file at the repo root named probe.txt containing:
2. Write a file at the repo root named probe.txt containing exactly:
plumbing probe run ${{ github.run_id }}
3. Commit it and push the branch.
4. Open a PR with gh pr create, titled
"plumbing probe ${{ github.run_id }} - close without merging".
Do not touch any other file. Report each command's result.
3. git add probe.txt
4. git commit -m "plumbing probe ${{ github.run_id }}"
5. git push -u origin plumbing-probe-${{ github.run_id }}
6. gh pr create --title "plumbing probe ${{ github.run_id }} - close without merging" --body "Probe artifact. Close without merging."
Report each command's output. If a command is denied, say which one
and stop.
claude_args: >-
--max-turns 15
--allowedTools "Write,Bash(git checkout:*),Bash(git add:*),Bash(git commit:*),Bash(git push origin plumbing-probe:*),Bash(git push -u origin plumbing-probe:*),Bash(gh pr create:*)"
--allowedTools "Write,Bash(git checkout -b plumbing-probe-:*),Bash(git add probe.txt),Bash(git commit -m:*),Bash(git push -u origin plumbing-probe-:*),Bash(gh pr create --title:*),Bash(git status:*),Bash(git branch:*)"

- name: Assert the probe PR exists (loud failure, never silent)
env:
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