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ChatGPT calendar ics reader events freebusy conflicts Prompt/upgrade_to_pro

How to: ChatGPT calendar ics reader events freebusy conflicts upgrade_to_pro

client:ChatGPT transport:streamable-http prompt:upgrade_to_pro

Add calendar ics reader events freebusy conflicts to ChatGPT

  1. 01

    Open Settings → Connectors → Advanced → Developer mode and merge this in. Keep any servers already there.

https://mcp.zovo.one/mcp/calendar
  1. 02

    Save the file and restart ChatGPT.

  2. 03

    upgrade_to_pro is surfaced in the connector's menu once the server is linked. Unlike a tool, you invoke it deliberately — ChatGPT will not call it for you.

  3. 04

    If it does not appear, check that calendar ics reader events freebusy conflicts is connected and that you are looking at its prompts rather than its tools.

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

Set these first

calendar ics reader events freebusy conflicts will not start until these are set, so it never reaches ChatGPT.

  • MCP_LICENSE_KEY

Same prompt, other clients

Read from the server itself, by connecting to it and calling prompts/list on 24 September 2026. A listing does not declare its prompts, so asking is the only way to know them, and this is what the server actually offers rather than what its listing claims. Names only are stored; connect the server for each prompt's arguments.