AI Plugin Index
1
Harness
autonomous-ai
Start Claude Code and Codex agents the person can watch, wait for them and read their answers.
Updated October 2026
The 10 best ai and llm tools MCP servers
The best ai and llm tools MCP servers in October 2026 are Harness, MCP Registry Server, ref-tools-ref-tools-mcp. Harness is the most widely used; REA is the most actively updated; MCP Registry Server is a good pick if you need a hosted server that also works in ChatGPT.
Harness
autonomous-ai
REA
morluto
MCP Registry Server
modelcontextprotocol
Ad slot · 12 of 12 openYour product hereReach people installing ai and llm tools MCP servers, right when they set them up.See prices →
2
MCP Registry Server
modelcontextprotocol
Publish and discover MCP servers via the official MCP Registry. Powered by HAPI MCP server.
3
ref-tools-ref-tools-mcp
ref-tools
Provide your AI coding tools with token-efficient access to up-to-date technical documentation for…
4
Microsoft Learn MCP
MicrosoftDocs
Official Microsoft Learn MCP Server – real-time, trusted docs & code samples for AI and LLMs.
5
Postman MCP Server
postmanlabs
Give your AI agents trusted access to the full Postman platform.
6
Agent-Native Design
BuilderIO
Agent-Native design tool - create and edit visual designs with agent assistance
7
Agent-Native Slides
BuilderIO
Agent-Native Google Slides - generate and edit React presentations
8
firebase-mcp
firebase
Gives AI development tools Firebase-specific capabilities and expertise.
9
REA
morluto
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
10
Nhost
nhost
Let your users work with their own data through an AI assistant, limited to what they can see.
See every one in AI and LLM tools.
Questions
How did you rank these ai and llm tools MCP servers?
Only maintained, original projects are listed. They are ranked by GitHub stars, with recent activity shown next to each. The list updates daily. See how we list and rank.
Which ai and llm tools MCP servers work in ChatGPT?
ChatGPT needs a remote server with a URL. MCP Registry Server, ref-tools-ref-tools-mcp, Microsoft Learn MCP, Postman MCP Server, Agent-Native Design, Agent-Native Slides offer one.