Open source tools for building with MCP servers, agent skills, and whatever comes next.

skilljack-mcp In development

Experimental MCP server for skill discovery. Makes skills findable and usable across tools and platforms.

skilljack-evals In development

CLI and GitHub Action for evaluating agent skills across agent SDKs and frameworks. Measures discoverability, instruction adherence, and output quality.

skilljack-client In development

Modular and highly customizable host application using MCP Apps as UI building blocks. Built around creatively combining servers, skills, and pluggable agents with the host as lightweight plumbing.