freee-mcp: Model Context Protocol (MCP) server for freee API integration

Last updated: 2026-11-05 · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install freee-mcp

npx freee-mcp configure
claude plugin install freee/freee-mcp

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 67/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

Quick Facts

Stars	515
Forks	57
Language	TypeScript
Category	MCP Server
License	Apache-2.0
Quality Score	67/100
Open Issues	12
Last Updated	2026-11-05
Created	2025-01-29
Platforms	mcp, node
Est. Tokens	~16k

About freee-mcp

freee-mcp freee API を Claude から使えるようにする MCP サーバー & Claude Plugin です。 MCP サーバー（API 呼び出し機能）と skill（API リファレンス）を組み合わせて利用することを想定しています。 Note: このプロジェクトは開発中であり、予期せぬ不具合が発生する可能性があります。問題を発見された場合は Issue として報告していただけると幸いです。特徴 MCP サーバー: freee API を Claude Desktop / Claude Code から直接呼び出し Claude Plugin: 詳細な API リファレンスドキュメント付きスキルを提供複数 API 対応: 会計・人事労務・請求書・工数管理・販売の5つの freee API をサポート OAuth 2.0 + PKCE:...

Compatible Skills

These tools work well together with freee-mcp for enhanced workflows:

mcp-server — semantic(0.63)+same_lang+similar_pop+shared_platform (52%)
latchkey — semantic(0.17)+complementary+same_lang+similar_pop+shared_platform (51%)
airtable-mcp-server — semantic(0.44)+same_lang+similar_pop+shared_platform (51%)
mcp — semantic(0.41)+same_lang+similar_pop+shared_platform (49%)
mcp-trends-hub — semantic(0.53)+same_lang+similar_pop+shared_platform (49%)

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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