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 instructions/trailofbits/slither-mcp/claude-mdgit clone --depth 1 https://github.com/trailofbits/slither-mcpWhat 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 | $0.04009 | $0.04009 |
| Opus 5 | $0.02005 | $0.02005 |
| Sonnet 5 | $0.00802 | $0.00802 |
| Haiku 4.5 | $0.00401 | $0.00401 |
Grade A, and why
slither-mcp CLAUDE.md 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 yesterday.
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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- yesterday First seen · 471 lines · 4,009 tokens per session scan A 9a2bf4df41f1
slither-mcp CLAUDE.md is an instructions file published in the GitHub repository trailofbits/slither-mcp (96 stars, last pushed 3mo ago), licensed AGPL-3.0. It adds 4,009 tokens to every session, about $0.0200 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.
Other instructions, from other repositories
wet-mcp AGENTS.md
Instructions for n24q02m/wet-mcp, covering agents.md - wet-mcp, cau truc, lenh thuong dung, mise shortcuts and cau hinh quan trong.
luxembourg-mcp CLAUDE.md
Instructions for amirdaraee/luxembourg-mcp, covering claude.md, commands, hard constraint: zero dependencies, architecture and adding or changing a tool touches five places.
swag-mcp CLAUDE.md
Instructions for jmagar/swag-mcp, covering swag mcp - claude memory reference, project overview, core architecture, key components and common development commands.
datalens-dev-mcp AGENTS.md
Instructions for ADIKANT/datalens-dev-mcp, covering agents.md, scope, read order, local material policy and public change hygiene.
swiss-democracy-mcp CLAUDE.md
Instructions for malkreide/swiss-democracy-mcp, covering claude.md, vor der arbeit, tests, zahlen, die eine aufzählung wiederholen and wenn etwas rot ist.
swiss-culture-mcp CLAUDE.md
Claude Code instructions for malkreide/swiss-culture-mcp, covering claude.md, vor der arbeit, tests, wenn etwas rot ist and wenn codex gar nicht erst hinsieht.