openaccountants/openaccountants

Overview

Openaccountants is an open-source repository of tax and accounting knowledge designed for AI agents. It provides over 1,000 research-verified skills covering 192 jurisdictions, including 130+ countries and every U.S. state. Users can upload these skills to Claude or ChatGPT, or connect via the MCP connector for accountant-verified versions.

Best for

Best for
Developers building AI agents for global tax and accounting automation.

Use cases

• Enable AI agents to perform tax calculations across multiple countries and states.
• Provide accurate accounting guidance for international compliance scenarios.
• Integrate verified tax rules into custom AI workflows or chatbot applications.

Notes

Openaccountants is an open-source repository of tax and accounting knowledge designed for AI agents. It provides over 1,000 research-verified skills covering 192 jurisdictions, including 130+ countries and every U.S. state. Users can upload these skills to Claude or ChatGPT, or connect via the MCP connector for accountant-verified versions.

155 stars on GitHub. Last updated 2026-06-07. Licensed AGPL-3.0.

Use cases

• Enable AI agents to perform tax calculations across multiple countries and states.
• Provide accurate accounting guidance for international compliance scenarios.
• Integrate verified tax rules into custom AI workflows or chatbot applications.

Pros

• Covers 192 jurisdictions, offering broad global tax and accounting knowledge.
• Open-source and free to use, allowing customization and community contributions.
• Accountant-verified versions available via the MCP connector for higher reliability.

Cons

• Accountant-verified versions require the MCP connector, adding complexity.
• Limited to the tax and accounting domain, not general-purpose AI assistance.
• Integration may require familiarity with MCP protocol and AI agent frameworks.

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.