What is freee-mcp CLAUDE.md?

Repository instructions for developing freee-mcp, a TypeScript MCP server that connects AI tools to freee accounting APIs.

They help build and run the server, validate TypeScript, run Jest tests, configure authentication, follow the existing code style, and understand the roles of its main source files.

They give coding agents the project's build, test, lint, type-checking, security, style, and authentication requirements in one place.

How knishioka/freee-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to knishioka/freee-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.

Copy the file

curl -O https://raw.githubusercontent.com/knishioka/freee-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/knishioka/freee-mcp

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/knishioka/freee-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/knishioka/freee-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/knishioka/freee-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/knishioka/freee-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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/knishioka/freee-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/knishioka/freee-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 994 This file is loaded in full into every session.

When invoked 994 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00994	$0.00994
Opus 5	$0.00497	$0.00497
Sonnet 5	$0.00199	$0.00199
Haiku 4.5	$0.00099	$0.00099

Measured 12d ago against content hash 8679900cb718, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

freee-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 12d 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.

CLAUDE.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Guidance for AI coding agents working in this repository. Keep this file concise and avoid duplicating README.md.

Commands

npm run build: Compile TypeScript into dist/
npm run dev: Run local development server with tsx watch
npm start: Run compiled server from dist/index.js
npm run lint: Lint src/**/*.ts with ESLint
npm run typecheck: TypeScript checks without emit
npm test: Run Jest tests
npm run setup-auth: Run OAuth setup helper script

Code Style

Follow existing TypeScript patterns and ESLint rules.
Use 2-space indentation, single quotes, and semicolons.
Avoid adding new any unless required by an external typing limitation.
Keep changes minimal and scoped to the issue.

Pre-commit Hook Process

The commit is blocked unless all lint-staged checks pass:

eslint --fix on staged src/**/*.{ts,tsx}
npm run typecheck
gitleaks detect --source . --verbose --no-banner --redact

Architecture

This project is an MCP server for freee accounting APIs.

File	Purpose
`src/index.ts`	MCP server bootstrap, env validation, tool registration, request handling
`src/api/freeeClient.ts`	Axios clients, auth interceptors, token refresh and retry behavior
`src/auth/tokenManager.ts`	Encrypted token persistence and expiry checks per company
`src/schemas.ts`	Zod input schemas for tools
`src/types/freee.ts`	Type definitions for freee entities and API payloads

MCP SDK 1.x Tool Registration Pattern

Keep McpServer initialization and capability structure aligned with current SDK 1.x usage.
Keep the local registerTool(...) wrapper in src/index.ts; it intentionally avoids TS2589 inference blowups from cumulative Zod-heavy registrations.
Register tools through this wrapper to preserve runtime behavior and compile stability.

Read the full file on GitHub · 78 lines

Changes

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.

12d ago First seen · 78 lines · 994 tokens per session scan A 8679900cb718

Subscribe to this mod's changes

freee-mcp CLAUDE.md is an instructions file published in the GitHub repository knishioka/freee-mcp (3 stars, last pushed 1mo ago), licensed MIT. It adds 994 tokens to every session, about $0.0050 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.

Finance and fintech

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.

github/spec-kit · 7,126 tokens

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.

vercel/next.js · 7,296 tokens

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.

openai/codex · 5,153 tokens

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).

microsoft/vscode · 6,785 tokens

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.

langchain-ai/langchain · 4,469 tokens

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).

microsoft/vscode · 5,001 tokens

freee-mcp: Instructions file for Claude Code