Borrowing it
Nothing to install: this file belongs to Montimage/mitre-mcp. 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/Montimage/mitre-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/Montimage/mitre-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/instructions/montimage/mitre-mcp/claude-md)<a href="https://agentmods.dev/instructions/montimage/mitre-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/montimage/mitre-mcp/claude-md/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/instructions/montimage/mitre-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/montimage/mitre-mcp/claude-md.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 | $0.00476 | $0.00476 |
| Opus 5.5 | $0.00190 | $0.00190 |
| Sonnet 5.5 | $0.00095 | $0.00095 |
| Haiku 4.5 | $0.00048 | $0.00048 |
Grade A, and why
mitre-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 19d 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
@AGENTS.md
Claude-specific pins for this repository. Shared rules (layout, conventions, constraints, token efficiency) live in AGENTS.md, which is imported above; the full environment inventory lives in CONTRIBUTING.md under ## Agent-runnable environment — read it instead of guessing.
Commands
- Python >= 3.11 virtual environment at
.venv— activate before every Python command:source .venv/bin/activate - Install (locked, from
uv.lock):uv sync --locked --extra dev - Build check:
python -c "import mitre_mcp.mitre_mcp_server" - Test suite of record:
pytest -q -p no:cacheprovider -o addopts="" - Frontend (
frontend/, Node 24):npm ci,npm run build,npm run lint - Environment variables: see
CONTRIBUTING.md## Agent-runnable environment— twelveMITRE_*names,FASTMCP_SERVER_HOST/FASTMCP_SERVER_PORT, fiveVITE_*names
Constraints
- You must never commit or push without being asked.
- Never add a
Co-Authored-By: Claudeline to a commit.
Baseline
- Recorded pass rate: 249 passed / 249 total
- Failing tests: none
- Recorded coverage: 100.0 % (committed STIX fixture + protocol smoke test; gate
--cov-fail-under=90.7— measured 100.00% on Python 3.11.15 with pytest-cov 7.1.0)
Security hygiene
- 2026-09-19 —
.mcpregistry_github_tokenand.mcpregistry_registry_tokenmoved out of the working tree to~/.config/mitre-mcp/(directory mode 700, files mode 600);.envtightened to mode 600. All three remain git-ignored. - Token rotation: pending owner action — the GitHub personal access token and the MCP-registry token still require rotation in their respective web consoles (not automatable). Record the rotation date of each token here once done — dates only, never values.
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.
- 19d ago Changed ef54e5f73461
- 1mo ago Changed · +2 tokens per session cb1694d5dcff
- 1mo ago First seen · 29 lines · 474 tokens per session scan A 417dd411e116
mitre-mcp CLAUDE.md is an instructions file published in the GitHub repository Montimage/mitre-mcp (15 stars, last pushed 11d ago), licensed MIT. It adds 476 tokens to every session, about $0.0019 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 2026-09-19.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.