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 skills/avksp/agent-lifecycle-kit/bug-forensicsnpx skills add avksp/agent-lifecycle-kit --skill bug-forensicsgit clone --depth 1 https://github.com/avksp/agent-lifecycle-kitWhat 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 | $0.00028 | $0.00451 |
| Opus 5 | $0.00014 | $0.00226 |
| Sonnet 5 | $0.00006 | $0.00090 |
| Haiku 4.5 | $0.00003 | $0.00045 |
Grade A, and why
bug-forensics 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
Bug Forensics
Use this skill only when the task explicitly asks to find or repair a bug, regression, flaky failure, incident, or security bug. The profile is optional and disabled by default for ordinary feature work.
Adapter task intake may recommend this profile through bugForensicsAdvisory.
Treat that as an advisory marker only. Do not claim the workflow gate is active
unless the reviewed task or frozen plan explicitly opts in.
Contract
Before accepting a patch, collect schema-backed evidence for:
- symptom;
- reproduction before modification;
- stable failure fingerprint;
- hypothesis ledger with accepted and rejected hypotheses;
- root cause;
- minimal patch;
- regression proof for the same fingerprint;
- no collateral damage through the canonical fix-impact receipt.
Inputs
Required phase-1 receipts:
agent-bug-reproduction-receipt.v1;agent-failure-fingerprint.v1;agent-bug-hypothesis-ledger.v1;agent-regression-proof-receipt.v1;agent-fix-impact-receipt.v1.
Reuse agent-fix-impact-receipt.v1 for behavior impact. Do not create a
bug-specific competing fix-impact schema.
Gates
- Reproduction must be red before any code modification.
- Regression proof must show the same fingerprint red before and green after.
- Minimal patch gate must justify any file outside the suspect scope.
- Cross-check is advisory unless the frozen plan explicitly opts into blocking
use. When used, reuse
agent-cross-check-receipt.v1with token/resource caps. - Suspect graph, flake detector, and bug-class classifier are phase-2 features and must not block the v1 profile unless a later plan enables them.
Compact Context
For compact hosts, include only the active bug packet, reproduction command, fingerprint fields, current hypotheses, suspect/write scope, and validation receipts. Summarize logs by digest and short failure pattern instead of copying large traces.
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 · 59 lines · 28 tokens per session scan A b7e281eaae2a
bug-forensics is a skill published in the GitHub repository avksp/agent-lifecycle-kit (18 stars, last pushed 2d ago), licensed Apache-2.0. It adds 28 tokens to every session and 451 once invoked, about $0.0001 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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