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
- 0.26.6 July 13, 2026 (267 KB)
- 0.26.5 July 13, 2026 (266 KB)
- 0.26.4 July 13, 2026 (266 KB)
- 0.26.3 July 13, 2026 (266 KB)
- 0.26.2 July 13, 2026 (265 KB)
- 0.18.1 June 30, 2026 (252 KB)
