Plan Data API for ChatGPT

com.form5500data/plan-data

Form 5500 data for prospecting and research: U.S. retirement plans, recordkeepers, fees, switches.

client:ChatGPT transport:streamable-http tools:7

Install Plan Data API in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.form5500data.com/mcp

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