ToolSchema Forge for ChatGPT

dev.workers.toolschemaforge.toolschema-forge/toolschema-forge

Convert, lint and generate LLM tool schemas for OpenAI, Anthropic, Gemini and MCP

client:ChatGPT transport:streamable-http tools:5

Install ToolSchema Forge in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://toolschema-forge.toolschemaforge.workers.dev/mcp

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