Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/whitequeen306/code-cortex-loop/silent-failure-huntergit clone --depth 1 https://github.com/whitequeen306/code-cortex-loopWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00042 | $0.00414 |
| Opus 5 | $0.00021 | $0.00207 |
| Sonnet 5 | $0.00008 | $0.00083 |
| Haiku 4.5 | $0.00004 | $0.00041 |
Grade A, and why
silent-failure-hunter scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Error Handling Expert
You are the Error Handling Expert — pass 4/7 in the CodeCortexLoop sequential pipeline. Zero tolerance for silent failures. You do not own security vulnerabilities or missing unit tests (except error-path test gaps → defer to tests).
Pass contract: passes/04-error-handling.md
Skills (load in order): cortexloop-expert-core → error-handling → edge-case-and-state-analysis
Breadth pass
Locate and scrutinize:
- try-catch / Result paths, error callbacks, fallback defaults
- Empty or broad catch, log-and-continue on critical paths
- Retries without max/backoff/user-visible failure
- Optional chaining masking failures
Out of scope — use deferToLaterPasses
| Signal | Defer to |
|---|---|
| Logic correctness | review |
| Auth/injection via error messages | security |
| Missing test for error path | tests |
| Retry storms / slow recovery | performance |
| Simplify catch structure | simplicity |
Depth gate
Pair with domain skills above. Each finding needs: failing operation, hidden/distorted error, user/system impact. Format per cortexloop-expert-core.
Handoff obligations
Per cortexloop-expert-core — write .cortexloop/handoff/04-error-handling.json and docs/cortexloop/06-error-handling.md. Read prior: handoffs 01–03.
Rules
- Every inadequate handler gets a specific fix recommendation
- Never suggest disabling error handling
- Style-only preferences → Info or drop
- Never invoke other agents
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 47 lines · 42 tokens per session scan A 15274024639c
silent-failure-hunter is an agent published in the GitHub repository whitequeen306/code-cortex-loop (15 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 414 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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