How to Connect Yayoi (弥生会計) to an AI Agent
Auth setup
1. 弥生IDでログイン. 2. スマート取引取込APIのパートナー申請. 3. OAuth認証フローでaccess_token取得. 4. 注意: APIは限定的で、パートナー申請が必要.
Key facts
| Base URL | https://api.yayoi-kk.co.jp/ |
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| API version | v1 (limited) |
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| Auth | OAuth 2.0 via Yayoi ID. Limited API availability — primarily Yayoi Smart Connect for data import/export. |
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| Token URL | https://auth.yayoi-kk.co.jp/oauth/token |
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| Scopes | smartconnect |
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| Request body | application/json |
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| Pagination | N/A |
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| Rate limit | Not documented. Partner agreement specifies limits. |
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| Error format | JSON: {"error":"...","error_description":"..."} |
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Key endpoints
| Method | Path | Description |
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POST | /v1/smart-connect/transactions | Import transactions via Smart Connect |
GET | /v1/smart-connect/status | Check import status |
Quickstart
POST /v1/smart-connect/transactions
Authorization: Bearer {access_token}
Content-Type: application/json
{"transactions":[{"date":"2024-01-15","amount":10000,"description":"売上"}]}
Agent pitfalls & tips
- API利用にはパートナー申請が必要 — 個人開発者には開放されていない.
- スマート取引取込がメインのAPI — 他の機能のAPIは限定的.
- 弥生会計/弥生青色申告のデータは直接APIアクセス不可 — Smart Connect経由.
- CSVインポート/エクスポートが事実上の主要連携方法.
- 確定申告シーズン（1-3月）は負荷が高い.
Source: curated by KanseiLink from official documentation (docs) and registry checks. Last reviewed: 2026-04-07. Specs change — verify against the official docs before production use.
Frequently Asked Questions
What is Yayoi (弥生会計)'s AEO score?
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Yayoi (弥生会計) has an AEO score of 0.60 and is rated BBB (Basic agent connectivity available). AEO (Agent Engine Optimization) measures how well a SaaS service works with AI agents. Scores range from 0.00 to 1.00, with grades from AAA (best) to D (not agent-ready).
Is Yayoi (弥生会計) AI-agent-ready?
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Yayoi (弥生会計) is currently connectable for AI agent use. API access is available but no dedicated MCP server has been published yet. For detailed connection guides, auth setup, and known pitfalls, use the KanseiLink MCP tool.
How does Yayoi (弥生会計) compare to other Accounting & Finance services?
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In the Accounting & Finance category, Yayoi (弥生会計) is rated BBB. KanseiLink evaluates services based on MCP availability, API quality, documentation, auth-guide clarity, and integration recipe availability (methodology published). Visit the full rankings at kansei-link.com to see how Yayoi (弥生会計) compares.
How can I integrate Yayoi (弥生会計) with an AI agent?
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The fastest way to integrate Yayoi (弥生会計) with an AI agent is through KanseiLink MCP. Install it with: npx @kansei-link/mcp-server — then use the search_services and get_service_detail tools to get the current auth setup, endpoints, rate limits, and agent-specific tips. This data is kept fresh from registry checks, curated official-doc guides, and agent reports.
How do I authenticate with Yayoi (弥生会計)?
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OAuth 2.0 via Yayoi ID. Limited API availability — primarily Yayoi Smart Connect for data import/export. Setup: 1. 弥生IDでログイン. 2. スマート取引取込APIのパートナー申請. 3. OAuth認証フローでaccess_token取得. 4. 注意: APIは限定的で、パートナー申請が必要.
What are Yayoi (弥生会計)'s API rate limits?
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Not documented. Partner agreement specifies limits.