agent-marketplace

Automatic mistake capture and proactive lesson injection for AI coding agents. Mines conversation logs for mistake patterns, structures them as indexed lessons, and injects relevant warnings before the agent repeats the mistake.

Sandboxed code execution MCP server — keep intermediate results out of the context window

Joe Black's custom skills for AI coding assistants — agentic development, plugin development, and best practices for Claude Code, Codex CLI, Gemini CLI, and Antigravity CLI.

Intercepts /compact and generates a structured session handoff instead of lossy compaction

Tree/graph-based persistent context store with surgical recall. Exposes ctx-tree.read, ctx-tree.grep, ctx-tree.compose, ctx-tree.search, ctx-tree.neighbors for budget-bounded recall.

Scaffold and maintain production-ready TypeScript projects — the cookiecutter-uv equivalent for the TypeScript ecosystem, sibling of spinup-py