# hodlflow > hodlflow is an onchain fund-flow analysis service. It answers trace, counterparty, recent-activity and exchange-reach questions over an HTTP API and an MCP server. - HTTP API base URL: https://api.hodlflow.app/v1 (Bearer API key; queries are POST with a JSON body). - MCP server: https://mcp.hodlflow.app (Streamable HTTP, e-mail sign-in). Call `meta` first. - Write addresses, tx hashes and cluster ids in full. Check completeness flags before quoting totals. ## Documentation Sets - [Abridged documentation](https://hodlflow.app/llms-small.txt): a compact version of the documentation for hodlflow, with non-essential content removed - [Complete documentation](https://hodlflow.app/llms-full.txt): the full documentation for hodlflow ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation