feat: mask shape-recognizable secrets before send - #16
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Redact API keys, tokens, and private keys from trace content before it leaves the machine. On by default; CODE_TRACE_MASK_SECRETS=false disables. - src/mask.rs: curated high-precision regex ruleset, ordered so specific rules (sk-ant-) run before generic ones (sk-); mask_str + recursive mask_value over JSON - emit.rs: mask user text, assistant text, tool inputs (incl. structured JSON, previously passed through raw) and tool outputs before truncate; fold redaction counts into *_meta - adds the regex crate - best-effort limitation documented in README Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Redacts shape-recognizable secrets (API keys, tokens, private keys) from trace content before it is sent to Langfuse. On by default;
CODE_TRACE_MASK_SECRETS=falsedisables.src/mask.rs: curated high-precision regex ruleset (near-zero false positives), ordered so specific rules (sk-ant-) run before generic ones (sk-). Covers PEM private keys, AWS key ids, GitHub/Slack/Google/Stripe/Anthropic/OpenAI tokens, JWTs,Bearerheaders, and URL-embedded credentials. Exposesmask_strand a recursivemask_valuefor JSON.emit.rs: masks the user prompt, assistant reply, tool results, and tool inputs beforetruncate(). This closes a gap where structured JSON tool inputs (e.g.{"command": ...},Write's{"content": ...}) were emitted raw. Per-field redaction counts fold into the existing*_metaas"redacted": N.regexcrate.Best-effort by design: catches shaped secrets, misses novel/unstructured ones.
pauseand the git-repo gate remain the airtight privacy controls. Documented in the README.Design doc:
docs/superpowers/specs/2026-07-21-mask-secrets-design.md.