HiddenContent for ChatGPT

ai.hiddencontent/mcp

Check a document for hidden text before your agent reads it. PDF, Office, RTF, HTML.

client:ChatGPT transport:streamable-http runtime:npm

Install HiddenContent in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.hiddencontent.ai/v1/mcp

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