Awesome list for AI agent harness engineering: tools, patterns, evals, memory, MCP, permissions, observability, and orchestration.

Turn any repo into an agent-ready workspace for Claude Code, Codex, Cursor, and other coding agents.

Persistent project knowledge graph for coding agents. MCP server with semantic search, in-process embeddings, and web explorer.

AKB — Agent Knowledgebase. Organizational memory for AI agents: vault-scoped docs / tables / files unified by URI graph, served over MCP.

🏛 [UNDER CONSTRUCTION] A (roman) claude plugin marketplace

MCP server providing token-efficient access to OpenAPI/Swagger specs via MCP Resource Templates for client-side exploration.

Caelune (凯露恩) — Local-first retrieval for private Markdown, PDF, and Tika documents, with a Windows desktop app and read-only MCP server.｜本地优先的私人知识检索工具。

Local-first workspace for Claude Code, Codex CLI, and Gemini CLI with sessions, analytics, workflows, and tools

27 Skills that diagnose, build, and optimize every architectural layer of your Claude environment

Automatically create new skills based on past agent traces

Optimize any AI agent’s skills, tools/MCP, and prompts against your own evals.

Your coding agent starts every session blank. Rekal is the memory your team is missing

MCP server for Basecamp 3 with OAuth, FastMCP, and 75 tools for projects, todos, messages, card tables, docs, uploads, and search.

Lightweight markdown-based workflow for collaborating with AI coding assistants using spec-driven development methodology

Record any browser page as GIF or video via MCP — powered by Playwright + ffmpeg

A local MCP server for agent literature work. Original-LaTeX section reads, BibTeX from arXiv metadata, and topic watches. Papers stay on disk. Search is optional.

MCP Documentation Server - Bridge the AI Knowledge Gap. ✨ Features: Document management • Gemini integration • AI-powered semantic search • File uploads • Smart chunking • Multilingual support • Zero-setup 🎯 Perfect for: New frameworks • API docs • Internal guides

Agentic AI explained with chickens 🐔 every pattern a runnable, CI-checked file.

🔥 Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.

Governance standard and reference toolset for LLM-maintained knowledge corpora

Perplexity AI search, reasoning, research, and compute - MCP server, dashboard, and multi-IDE auto-config for VS Code.

Scan any agent skill — authored or compiled — for prompt injection, secrets, and malicious execution before it touches your agent. Or compile the long tail on the fly.

The leading, most token-efficient MCP server for documentation exploration and retrieval via structured section indexing

Kiso is a publishing engine that turns Open Knowledge Format (OKF) bundles into static websites for humans and AI agents. We also provide an MCP Server.