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 skills add jameshgrn/firepass-mcp --skill firepass-reviewergit clone --depth 1 https://github.com/jameshgrn/firepass-mcpWrote 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/skills/jameshgrn/firepass-mcp/firepass-reviewer)<a href="https://agentmods.dev/skills/jameshgrn/firepass-mcp/firepass-reviewer"><img src="https://agentmods.dev/badge/skills/jameshgrn/firepass-mcp/firepass-reviewer/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/skills/jameshgrn/firepass-mcp/firepass-reviewer"><img src="https://agentmods.dev/badge/skills/jameshgrn/firepass-mcp/firepass-reviewer.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 | $0.00061 | $0.00535 |
| Opus 5 | $0.00030 | $0.00267 |
| Sonnet 5 | $0.00012 | $0.00107 |
| Haiku 4.5 | $0.00006 | $0.00053 |
Grade A, and why
firepass-reviewer 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 10d 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
FirePass Reviewer
Autonomous code reviewer powered by Kimi K2.6 Turbo. Has its own read-only tool loop with: read_file, ripgrep, ast_grep, jq, glob_find, tree, list_dir. Returns structured review: blocking issues, suggestions, and what's done well.
When to use
- Reviewing code changes or diffs
- PR review
- Architecture review
- Security audit of code paths
- Pre-merge quality checks
Preference
Use for code review tasks where you want structured, opinionated output with file:line citations and severity labels (bug, security, design, nit).
How to use
Call mcp__firepass__firepass_reviewer with:
prompt: What to review — files, a diff, a PR description, or a specific concerncwd: Important — set to the project/repo rootcontext: Optional diff, file contents, or PR description to pre-loadmax_iterations: Tool-call rounds (default 60)
Output format
The reviewer structures its output as:
- Summary: 1-2 sentence overall assessment
- Blocking: Issues that must be fixed (bug, security, correctness)
- Suggestions: Non-blocking improvements (design, performance, style)
- Good: What's done well
All items cite file:line references.
Capabilities
| Tool | Description |
|---|---|
| read_file | Read file contents with line numbers |
| ripgrep | Fast regex search via rg (dangerous flags blocked) |
| glob_find | Find files by glob pattern |
| ast_grep | Structural code search via sg |
| jq | Query/transform JSON |
| list_dir | List directory contents with sizes |
| tree | Directory tree (excludes .git, pycache, node_modules, .venv) |
Security
Read-only — write_file, edit_file, and bash are blocked at both the API schema
level (model never sees them) and at runtime (server rejects even if hallucinated).
All file operations sandboxed to the provided cwd.
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.
- 10d ago First seen · 66 lines · 61 tokens per session scan A b1062964c5c7
firepass-reviewer is a skill published in the GitHub repository jameshgrn/firepass-mcp (2 stars, last pushed 3mo ago), licensed MIT. It adds 61 tokens to every session and 535 once invoked, about $0.0003 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 2026-08-31.
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