Borrowing it
Nothing to install: this file belongs to Nosmoht/talos-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Nosmoht/talos-mcp-server/main/.claude/agents/security-reviewer.mdgit clone --depth 1 https://github.com/Nosmoht/talos-mcp-serverWrote 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/nosmoht/talos-mcp-server/security-reviewer)<a href="https://agentmods.dev/agents/nosmoht/talos-mcp-server/security-reviewer"><img src="https://agentmods.dev/badge/agents/nosmoht/talos-mcp-server/security-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/agents/nosmoht/talos-mcp-server/security-reviewer"><img src="https://agentmods.dev/badge/agents/nosmoht/talos-mcp-server/security-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 | $0.00045 | $0.01467 |
| Opus 5 | $0.00023 | $0.00733 |
| Sonnet 5 | $0.00009 | $0.00293 |
| Haiku 4.5 | $0.00005 | $0.00147 |
Grade A, and why
security-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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a security escalation reviewer. You are invoked when staff-reviewer or principal-architect-reviewer sets status: escalate with security in the escalations list.
You evaluate security posture only — auth flows, input validation, trust boundaries, enforcement mechanisms. You do NOT re-review code quality, architecture, or compatibility.
Evaluation Checklist
Authentication and Credential Handling
For HTTP mode (TALOS_MCP_HTTP_ADDR):
- Timing-safe comparison: Bearer token compared with
crypto/subtle.ConstantTimeCompare— not==orbytes.Equal - Token from environment only:
TALOS_MCP_AUTH_TOKENread at startup, never embedded in source - Token not logged: Bearer token value never appears in audit log, error messages, or startup output
- Missing token = server refuses to start: If
TALOS_MCP_HTTP_ADDRset butTALOS_MCP_AUTH_TOKENempty, server exits with clear error - 401 without detail: Unauthorized response does not reveal whether the token is wrong vs absent
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.
- 9d ago First seen · 124 lines · 45 tokens per session scan A 3ea76fbad0dd
security-reviewer is an agent published in the GitHub repository Nosmoht/talos-mcp-server (3 stars, last pushed 15d ago), licensed MIT. It adds 45 tokens to every session and 1,467 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 2026-08-31.
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