CompletionKit is a prompt testing platform that runs as a Rails engine or a standalone app. Run prompts against real datasets, score every output with an LLM judge against criteria you define, track prompt versions, and get AI-generated improvement suggestions grounded in your actual results. Includes a web UI, REST API, and a built-in MCP server with 34 tools.
Required Ruby Version
>= 3.2.0
Authors
Damien Bastin
Versions
- 0.21.1 July 01, 2026 (260 KB)
- 0.21.0 July 01, 2026 (260 KB)
- 0.20.4 July 01, 2026 (259 KB)
- 0.20.3 June 30, 2026 (257 KB)
- 0.20.2 June 30, 2026 (257 KB)
- 0.18.1 June 30, 2026 (252 KB)
