---
name: mpp
title: MPP
category: commerce
---

# MPP

The Machine Payment Protocol describes prices and settlement for API calls using OpenAPI extensions your existing description can carry.

## When to use this skill

Use this when a site fails the "MPP" check and you need to implement it.

## Goal

Support MPP (Machine Payment Protocol) for agent-native HTTP payments

## Pass criteria

An OpenAPI document annotates payable operations with x-payment-info.

## Implementation

This skill covers the diagnosis. The step-by-step implementation prompt is part
of the paid tier and is served per scan by the API — see https://agent-ready.t0ols.com/llms-full.txt.

## Specifications

- https://mpp.dev

## Verifying

Re-run the scan against the site and confirm the check reports a pass:

    curl -s https://agent-ready.t0ols.com/api/scan \
      -H 'content-type: application/json' \
      -d '{"url":"https://example.com","enabledChecks":["mpp"]}'