ChatGPT RateAPI — live US mortgage, auto, HELOC, personal & deposit rates Prompt/affordability_flow
How to: ChatGPT RateAPI — live US mortgage, auto, HELOC, personal & deposit rates affordability_flow
Add RateAPI — live US mortgage, auto, HELOC, personal & deposit rates to ChatGPT
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Open Settings → Connectors → Advanced → Developer mode and merge this in. Keep any servers already there.
https://mcp.rateapi.dev/mcp-
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Save the file and restart ChatGPT.
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affordability_flow 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.
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If it does not appear, check that RateAPI — live US mortgage, auto, HELOC, personal & deposit rates 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
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.