freee-mcp — security grade SAFE, quality 67/100

Security audit verdict: SAFE · quality 67/100

No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

by freee · MCP Server · ★ 500

Last updated: 2026-09-16 · Indexed by AgentSkillsHub · Auto-synced every 8h

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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: セキュアな認証フロー、トークン自動更新複数事業所対応: 事業所の動的切り替えが可能 SKILL と MCP の通信の流れ Claude Code では、SKILL（API リファレンス）と MCP サーバー（API 呼び出し）を組み合わせて利用します。この仕組みにより： SKILL: 必要な API リファレンスを段階的にコンテキスト

Quick Facts

Stars	500
Forks	57
Language	TypeScript
Category	MCP Server
License	Apache-2.0
Quality Score	66.8583044335418/100
Open Issues	8
Last Updated	2026-09-16
Created	2025-01-29
Platforms	mcp, node
Est. Tokens	~16k

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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Frequently Asked Questions

What is freee-mcp?

freee-mcp is Model Context Protocol (MCP) server for freee API integration. It is categorized as a MCP Server with 500 GitHub stars.

What programming language is freee-mcp written in?

freee-mcp is primarily written in TypeScript.

How do I install or use freee-mcp?

You can find installation instructions and usage details in the freee-mcp GitHub repository at github.com/freee/freee-mcp. The project has 500 stars and 57 forks, indicating an active community.

What license does freee-mcp use?

freee-mcp is released under the Apache-2.0 license, making it free to use and modify according to the license terms.

How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. 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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