freee-api-skill

freee-api-skill is a skill for Claude Code from freee/freee-mcp. It costs 365 tokens per session (3,447 once invoked), scanned A, original, Apache-2.0.

A guide for using freee's APIs through an MCP server. freee is a Japanese business platform covering accounting, payroll, invoices, time tracking, sales, tax filing, and related work.

In plain words
What is it for?
Use it when connecting to freee, finding an API operation, checking authentication, or working with freee business data.
Why use it?
It helps an AI agent find the correct freee API details and examples instead of guessing request fields or endpoints.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the freee-mcp plugin — 1 skill, 2 hooks, 2 MCP servers shipped together

Good fit Use it when connecting to freee, finding an API operation, checking authentication, or working with freee business data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/freee/freee-mcp/freee-api-skill
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add freee/freee-mcp --skill freee-api-skill
Clone the repo
git clone --depth 1 https://github.com/freee/freee-mcp

Made for: Claude Code.

Or install freee-mcp, the plugin that ships this one along with the rest of its 1 skill, 2 hooks, 2 MCP servers.

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.

agentmods badge for freee-api-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/freee/freee-mcp/freee-api-skill/github.svg)](https://agentmods.dev/skills/freee/freee-mcp/freee-api-skill)
Your own site
<a href="https://agentmods.dev/skills/freee/freee-mcp/freee-api-skill"><img src="https://agentmods.dev/badge/skills/freee/freee-mcp/freee-api-skill/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.

agentmods 80×15 button for freee-api-skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/freee/freee-mcp/freee-api-skill"><img src="https://agentmods.dev/badge/skills/freee/freee-mcp/freee-api-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 365 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,447 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 17 Oct 2026
  • Snyk warn 17 Oct 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00365 $0.03447
Opus 5.5 $0.00146 $0.01379
Sonnet 5.5 $0.00073 $0.00689
Haiku 4.5 $0.00036 $0.00345

Measured 7d ago against content hash 1176089beee9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

freee-api-skill 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 7d 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.

skills/freee-api-skill/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

freee API スキル

概要

freee の会計・人事労務・請求書・工数管理・販売・IT管理・固定資産・業務委託管理・サーベイ・開業・人事評価・申告のデータを AI から直接操作できるスキルです。

freee-mcp (MCP サーバー) を通じて freee API と連携。

このスキルの役割:

  • freee API の詳細リファレンスを提供
  • freee-mcp 使用ガイドと API 呼び出し例を提供

セットアップ

freee_* ツールが利用できている場合、セットアップは不要です。

以下のいずれかに該当する場合のみ SETUP.md を読み、ユーザーに接続手順を案内してください。

  • freee_* ツールが1つも利用できない
  • freee_auth_status が未認証を返し、「エラー対応」の手順でも解決しない
  • ユーザーが接続方法・初期設定について質問している

接続モードは freee_server_info の transport フィールドで確認できます(remote = Remote MCP、stdio = ローカル)。

リファレンス

API リファレンスが references/ に含まれます。各リファレンスにはパラメータ、リクエストボディ、レスポンスの情報があります。

目的の API を探す手順:

  1. references/INDEX.md を読む(service ごとのファイル名と内容の一覧)
  2. 索引で特定できない場合は references/ 内のファイルをキーワード検索する

リファレンスの記法:

  • 名前* は必須、無印は任意
  • 見出しの ### リクエストボディ* はリクエストボディ自体が必須であることを示す
  • パラメータは特記なき限り query。(path) (header) は該当箇所に明記
  • パラメータ名末尾の [] はパラメータ名の一部であり API 呼び出し時に省略してはいけない
  • GET /xxx と同じ は、同一ファイル内の該当エンドポイントと内容が同一であることを示す
  • レスポンスはトップレベルの項目のみ記載。ネストした構造は実際に API を呼び出して確認する

法人税の帳票 XML(XTX / XBRL)の各要素と紙の帳票の項目との対応は tax-return-references/ にあります。索引と共通仕様は tax-return-references/index.md にあり、帳票ごとのファイルは その索引の帳票一覧から sheet_code で引きます(系列の別表や内訳書は 1 ファイルに複数帳票をまとめています)。

使い方

MCP ツール

認証・事業所管理:

  • freee_authenticate - OAuth 認証(Remote MCP では認証は自動処理されるため通常は不要)
  • freee_auth_status - 認証状態確認
  • freee_clear_auth - 認証情報クリア(ローカルモード用)
  • freee_current_user - ログインユーザー情報取得
  • freee_list_companies - 事業所一覧
  • freee_set_current_company - 事業所切り替え
  • freee_get_current_company - 現在の事業所取得

サーバー情報:

  • freee_server_info - サーバー情報取得(バージョン、transport: remote/stdio)

ファイル操作:

  • freee_file_upload - ファイルボックスにファイルをアップロード (POST /api/1/receipts) ※ローカルモードのみ

API 呼び出し:

  • freee_api_get - GET リクエスト
  • freee_api_post - POST リクエスト
  • freee_api_put - PUT リクエスト
  • freee_api_delete - DELETE リクエスト
  • freee_api_patch - PATCH リクエスト
  • freee_api_list_paths - 利用可能なAPIパス一覧

serviceパラメータ (必須):

  • accounting - freee会計(取引、勘定科目、取引先など) 例: /api/1/deals
  • hr - freee人事労務(従業員、勤怠など) 例: /api/v1/employees
  • invoice - freee請求書(請求書、見積書、納品書) 例: /invoices
  • pm - freee工数管理(プロジェクト、工数など) 例: /projects
  • sm - freee販売(見積、受注、売上など) 例: /businesses
  • it_management - freeeIT管理(メンバー、SaaSアカウント、アプリ、備品、部署、会社など) 例: /hub/it_management/members
  • fixed_asset_management - freee固定資産(固定資産の一覧、詳細、登録、更新、削除) 例: /hub/fixed_asset_management/fixed_assets
  • partner_management - freee業務委託管理(業務委託先の企業ユーザー・部門) 例: /hub/partner_management/orderer/company_users
  • survey - freeeサーベイ(サーベイ企画、実施回)※ freee-mcp(リモート版) 限定 例: /hub/survey/base_surveys
  • launch - freee開業(開業申請用データの参照・更新)※ freee-mcp(リモート版) 限定 例: /hub/launch/kaigyo_application
  • employee_evaluation - 人事評価(人事評価結果の取得)※ freee-mcp(リモート版) 限定 例: /hub/employee_evaluation/evaluation_results
  • tax_return - freee申告(法人税申告・帳票参照) 例: /hub/tax_return/corporate

Read the full file on GitHub · 171 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 7d ago Changed 1176089beee9
  2. 22d ago Changed · +1 lines 148bc1fd84fc
  3. 1mo ago Changed · +1 lines 78fe5bc3946f
  4. 1mo ago Changed · +3 lines · +33 tokens per session ea29d3cce454
  5. 1mo ago First seen · 166 lines · 332 tokens per session scan A 683861b8d917

Subscribe to this mod's changes

freee-api-skill is a skill published in the GitHub repository freee/freee-mcp (509 stars, last pushed yesterday), licensed Apache-2.0. It adds 365 tokens to every session and 3,447 once invoked, about $0.0015 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 2026-08-30.

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