flAPI is an open-source framework that converts SQL queries into REST APIs and Model Context Protocol tools, leveraging DuckDB for fast, snapshot-based data access. It supports multiple data sources and provides a single binary for easy deployment, targeting data engineers and backend developers.
In the API design, testing & docs space, flAPI takes a focused approach. Rapidly exposing SQL data as production-ready APIs and tools without complex backend setup. It is built as an open-source project for data engineers and backend developers. flAPI is open source under the Open Source license. It runs on the command line and API, and it can be self-hosted.
Behind flAPI is DataZoo GmbH, based in Germany, and the product first shipped in 2024. Development happens publicly on GitHub with 72 stars and 57 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — flAPI occupies a relatively distinct niche. Key capabilities include SQL to REST API, MCP tools, and duckDB integration. It exposes integrations via an MCP server and a public API.
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