JGrants provides an interface to interact with the JGrants (Jグランツ) system, the Japanese Digital Agency's electronic application system for national and local government subsidies. Leveraging the public API, it offers three core MCP tools: `list_subsidies` for searching active subsidies, `get_subsidy_detail` for retrieving detailed subsidy information with attachment URLs instead of bulky base64 data, and `download_attachment` for obtaining direct download URLs for specific attachments. This ensures efficient access to vital subsidy information without the overhead of handling large data chunks.