feat(evals-core): redact secret values before traces reach an LLM - #238
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New redactSecrets / REDACTION_MARKER masks credential values in the run trace, MCP arguments, and error text before anything is sent to an LLM judge or the recommendation analyst. The value is replaced rather than the line dropped, so a security grader still sees that a secret occupied that position. The judge command trace is scrubbed through the same path.
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Important
This repository does not receive automatic reviews because it has fewer than 10 stars. ⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Pro Plus Run ID: 📝 WalkthroughWalkthroughThe change adds secret-redaction utilities, exports them publicly, and applies them to successful command traces sent to the LLM judge. It also documents the redaction marker and adds coverage for redaction and trace formatting. ChangesCommand trace secret redaction
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟠 High · up to Some curl credential forms can bypass redaction and expose passwords in command traces sent to an LLM. This is a high-impact security issue, so the PR is not ready to merge until the patterns and regression tests are expanded. Sequence Diagram(s)sequenceDiagram
participant CommandRunner
participant formatCommandTrace
participant redactSecrets
participant LLMJudge
CommandRunner->>formatCommandTrace: successful command trace
formatCommandTrace->>redactSecrets: command text
redactSecrets-->>formatCommandTrace: redacted command text
formatCommandTrace->>LLMJudge: trace header and redacted commands
Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 5 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@packages/evals-core/src/utils/redact.ts`:
- Line 50: Update the redaction pattern in the relevant utility to cover curl
user credentials supplied with --user, --user=, whitespace-separated -u/--user,
and attached -u syntax, while preserving the existing username-prefix and
redaction-marker behavior. Add regression tests covering each credential form,
including short passwords, and ensure formatCommandTrace receives redacted
output.
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📒 Files selected for processing (6)
docs/ADDING_EVALS.mdpackages/evals-core/src/graders/executors/llm-judge.tspackages/evals-core/src/index.tspackages/evals-core/src/utils/redact.tspackages/evals-core/tests/graders/executors.test.tspackages/evals-core/tests/redact.test.ts
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The -u pattern only matched a space-separated short flag, so 'curl --user admin:pw', 'curl --user=admin:pw', and the attached 'curl -uadmin:pw' left the password unredacted on its way to the judge and the analyst. Extend the pattern to cover --user, --user=, and attached -u, and add a regression case for each form.
The Bearer/Basic value match stopped at characters like % ! #, leaking a token's suffix. Match up to the next whitespace or quote instead, so the value is redacted whole while the closing quote of a quoted header stays.
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Description
This is the second of three PRs splitting #221 into independently reviewable pieces. It carries only the secret-redaction changes, which are self-contained in
evals-coreand depend on nothing else in that PR.redactSecrets/REDACTION_MARKERinevals-coremasks credential values in the run trace, MCP arguments, and error text before anything reaches an LLM judge or the recommendation analyst.docs/ADDING_EVALS.md.References
Split out from #221. The diagnostics PR builds on this one because the recommendation analyst calls
redactSecrets.Testing
Checklist
Summary by CodeRabbit
Security
[REDACTED SECRET].Improvements
Documentation