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 53 tools.
Required Ruby Version
>= 3.2.0
Authors
Damien Bastin
Versions
- 0.28.43 September 16, 2026 (285 KB)
- 0.28.42 August 12, 2026 (285 KB)
- 0.28.41 August 12, 2026 (285 KB)
- 0.28.40 August 12, 2026 (285 KB)
- 0.28.39 August 12, 2026 (285 KB)
