Overview · MCP · REST · Claude · ChatGPT and OpenAI

Developers · ChatGPT and OpenAI

Piloxa in ChatGPT

Add it as a connector (tested: paying customers arrive this way)

1. In ChatGPT, open Settings, then Apps and Connectors. Custom connectors need developer mode turned on in the advanced settings, which depends on your plan.
2. Create a connector with the URL https://piloxa.com/mcp and no authentication.
3. In a chat, enable it and ask “Check this letter for Certified Mail” or “Send this certified.”

REST for software that reads OpenAPI

https://piloxa.com/openapi.json describes the same operations; the requests on the REST page are tested.

Not yet tested by us, so not described here

OpenAI’s Responses API remote MCP tool, the Agents SDK and Agentic Commerce checkout. We list an integration only once we have run it.

What no integration can do

• Mail or charge anything. Nothing is printed, mailed or charged until a person reviews the exact document, the recipient and the total, and approves and pays on the review page. An assistant can check, quote and prepare; it cannot send.
• Read a person’s past letters anonymously. Status answers only for letters prepared in the same session.
• Decide a legal deadline. A deadline is the person’s to state; Piloxa only notices that a letter mentions one.