AgentIndex AI & MCP Discovery Registry for ChatGPT

com.omnitoolcalc.directory/agentindex

Search verified AI agents, MCP servers, and native llms.txt documentation endpoints.

client:ChatGPT transport:streamable-http tools:5

Install AgentIndex AI & MCP Discovery Registry in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://directory.omnitoolcalc.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs