Hledger MCP Server is a Model Context Protocol (MCP) server that exposes HLedger accounting data and functionality to MCP clients, including AI assistants. It enables AI applications to query current balances, generate a wide range of financial reports, add new entries, and analyze journal data through a standardized protocol. The server supports most hledger CLI commands, can fetch and traverse included journal files, and offers a safe read-only mode to prevent writes. It is published on npm as @iiatlas/hledger-mcp and can be deployed from an .mcpb release file or via npm. The MCP server automatically registers the primary journal and every file reported by hledger files as MCP resources, enabling clients to browse and retrieve the source ledgers. When write operations are enabled, it provides tools to add, remove, replace, import, rewrite, and close transactions, with optional dry-run previews and backups. A built-in web interface via hledger web can be launched from within the MCP server, and environment/config options let you specify custom executables and toggle read/write behavior. The project includes test resources and a clear development structure to support extension and testing. Read-only MCP sessions force the web interface to view mode, while write-enabled sessions default to add unless edit is explicitly requested.