Plainer for ChatGPT

io.github.fainir/plainer

Find, read, create and edit Plainer files with Claude Code or Codex. Approve access in your browser.

client:ChatGPT transport:streamable-http

Install Plainer in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://plainer.app/mcp

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