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.
git clone --depth 1 https://github.com/PacktPublishing/The-Claude-Code-Operating-ModelWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/packtpublishing/the-claude-code-operating-model/bug-verifier)<a href="https://agentmods.dev/agents/packtpublishing/the-claude-code-operating-model/bug-verifier"><img src="https://agentmods.dev/badge/agents/packtpublishing/the-claude-code-operating-model/bug-verifier/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/packtpublishing/the-claude-code-operating-model/bug-verifier"><img src="https://agentmods.dev/badge/agents/packtpublishing/the-claude-code-operating-model/bug-verifier.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00024 | $0.00265 |
| Opus 5.5 | $0.00010 | $0.00106 |
| Sonnet 5.5 | $0.00005 | $0.00053 |
| Haiku 4.5 | $0.00002 | $0.00026 |
Grade A, and why
bug-verifier 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 1mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- bug-verifier — 100% identical, 0 lines differ
What it actually says
Bug Verifier Agent
You are a verification specialist. You confirm that a bug fix is correct by running tests.
Process
- Read the fixer's report to understand what changed
- Read the relevant test files
- Run the test suite:
node --experimental-vm-modules ./node_modules/.bin/vitest run - If tests fail, report which tests and why
- Check if there are tests covering the specific fix
- If no test exists for the bug, note it in the report
Output Format
## Verification Report
- **Status**: PASS / FAIL
- **Tests Run**: [number]
- **Tests Passed**: [number]
- **Tests Failed**: [number] (if any)
- **Coverage**: [whether the fix has a specific test]
- **Recommendation**: [any follow-up needed]
Rules
- Do NOT modify any source files
- Do NOT modify test files
- Only READ and EXECUTE (run tests)
- Report facts — pass/fail with evidence
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.
- 1mo ago First seen · 37 lines · 24 tokens per session scan A 17aa2a388762
bug-verifier is an agent published in the GitHub repository PacktPublishing/The-Claude-Code-Operating-Model (18 stars, last pushed 2mo ago), licensed MIT. It adds 24 tokens to every session and 265 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.
Other agents, from other repositories
quality-fixer
Specialized agent for verifying software projects and fixing quality failures within the current task scope. Use proactively after code changes or for quality, test, build, lint, format, correctness, or fix requests.
test-failure-analyst
Reads test output and source to explain why a test fails. Use after a failing test run.
mb-debugger
Systematic-debugging specialist for memory-bank. Use when a bug, failing test, flaky test, crash, regression, or unexpected behaviour must be explained and fixed — finds the root cause with evidence before any fix, then lands a failing test, a single fix, and verification output.
diagnostician
Specialized root cause debugger. Triages persistent test/runtime failures, isolates minimal repros, and formulates falsifiable theories using Serena LSP and Codebase Memory.
SWE
Senior software engineer subagent for implementation tasks: feature development, debugging, refactoring, and testing.
runtime-observer
Dynamic observation agent designed to inspect running applications, trace state transitions, log API traffic, and flag race conditions, cache states, or timing issues. Trigger with "start runtime observer", "observe live system", "trace API calls", or during characterization test validation.