Borrowing it
Nothing to install: this file belongs to Frihet-io/frihet-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/Frihet-io/frihet-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/Frihet-io/frihet-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/frihet-io/frihet-mcp/claude-md)<a href="https://agentmods.dev/instructions/frihet-io/frihet-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/frihet-io/frihet-mcp/claude-md.svg" alt="Measured on agentmods" 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 | $0.01167 | $0.01167 |
| Opus 5 | $0.00583 | $0.00583 |
| Sonnet 5 | $0.00233 | $0.00233 |
| Haiku 4.5 | $0.00117 | $0.00117 |
Grade A, and why
frihet-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 8d 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 — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — Frihet MCP Server
Guidance for AI coding assistants working on this repository. See AGENTS.md for build commands and contribution conventions.
What is this
MCP server that connects AI assistants (Claude · ChatGPT · Cursor · Windsurf · Cline · Antigravity · Codex · Copilot · Gemini CLI) to Frihet ERP. Natural language → invoices, expenses, clients, fiscal reports.
Live:
- npm: https://www.npmjs.com/package/@frihet/mcp-server — version: see
package.json; surface counts are pinned by the generated public-capability contract - MCP remote: https://mcp.frihet.io (Cloudflare Worker)
- Smithery: https://smithery.ai/servers/frihet/frihet-mcp
- Anthropic registry: https://registry.modelcontextprotocol.io/?q=io.frihet
- License: MIT
Repo: Frihet-io/frihet-mcp
Stack
- Node.js >= 20
- TypeScript (strict, target ES2022)
@modelcontextprotocol/sdk(peer dep)- Zero runtime deps (only 1 in package.json — minimal surface)
- Distribution: npm + Cloudflare Worker (mcp.frihet.io) + Smithery
- Tests: native
node --testrunner
Architecture
src/
index.ts — MCP server entry (Server + transport)
client.ts — Frihet API HTTP client (Bearer auth)
client-interface.ts — Typed interface for client mocking
types.ts — Shared TypeScript types
logger.ts — Structured logging
observability.ts — Langfuse LLM observability
metrics.ts — Tool call metrics
openai-profile.ts — OpenAI compatibility profile
tools/
register-all.ts — authoritative tool registry (SoT — do not hand-count)
<domain>.ts — one module per domain (invoices, expenses, clients,
quotes, CRM, banking, fiscal/compliance, webhooks,
intelligence, …). `ls src/tools/` for the current list.
shared.ts — Cross-tool helpers
resources/
register-all.ts — MCP resources (read-only context)
prompts/
register-all.ts — MCP prompts (templated)
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.
- 8d ago First seen · 140 lines · 1,167 tokens per session scan A 393a544935a7
frihet-mcp CLAUDE.md is an instructions file published in the GitHub repository Frihet-io/frihet-mcp (9 stars, last pushed today), licensed MIT. It adds 1,167 tokens to every session, about $0.0058 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.
Other instructions, from other repositories
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.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
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.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.