Kojen

Overview

Kojen is a Model Context Protocol server that helps you train, evaluate, red-team and deploy AI agents through prompt tuning, LLM-judged evaluations, and katas. It exposes these capabilities as tools your AI assistant can invoke directly within your workflow.

Kojen runs as a hosted remote service at https://kojen.ai/api/mcp, requiring only an API Key for authentication. Nothing needs to be installed locally—simply point your MCP client to the endpoint and start working. The latest release is v1.1.0.

Kojen is listed in the AI & Agents category on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. If you maintain Kojen, claim this listing to verify ownership and keep information up to date.

Installation

Settings → Connectors → Add custom connector
Name: Kojen
URL:  https://kojen.ai/api/mcp