2o for ChatGPT

io.github.russellshen1992/2o

Human intelligence API — AI agents verify facts with human domain experts via MCP

client:ChatGPT transport:sse runtime:npm

Install 2o in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://www.2oapi.xyz/api/mcp

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