ChatGPT 402MCP.org — HTTP 402 & Agent Payment Registry Prompt/handle_402_response
How to: ChatGPT 402MCP.org — HTTP 402 & Agent Payment Registry handle_402_response
Add 402MCP.org — HTTP 402 & Agent Payment Registry to ChatGPT
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01
Open Settings → Connectors → Advanced → Developer mode and merge this in. Keep any servers already there.
https://402mcp.org/api/v1/mcp-
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Save the file and restart ChatGPT.
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handle_402_response 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 402MCP.org — HTTP 402 & Agent Payment Registry 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
402MCP.org — HTTP 402 & Agent Payment Registry will not start until these are set, so it never reaches ChatGPT.
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MCP_402_OFFLINE
Same prompt, other clients
Read from the server itself, by connecting to it and calling prompts/list on 16 October 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.