> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mag3nt.com/llms.txt
> Use this file to discover all available pages before exploring further.

# (Removed) Make a micropayment via MPP protocol

> This proprietary push endpoint has been removed. Use POST /api/pay with { card_id, card_token, url } instead. It automatically decodes the MPP challenge and settles on-chain.




## OpenAPI

````yaml /openapi.yaml post /api/mpp/pay
openapi: 3.1.0
info:
  title: mag3nt API
  version: '2026-06-04'
  description: >
    Payment infrastructure for AI agents. Issue virtual cards, pay for API
    access via x402/AP2/MPP protocols, and settle in USDC on Base.
  contact:
    name: mag3nt
    url: https://mag3nt.com
  license:
    name: Proprietary
    url: https://github.com/mag3nt-com/mag3nt-node/blob/main/LICENSE
servers:
  - url: https://mag3nt.com
    description: Production
security:
  - ApiKeyAuth: []
tags:
  - name: Payments
    description: Universal outbound protocol payments
  - name: Cards
    description: Virtual payment card lifecycle
  - name: Keys
    description: Developer API key management
  - name: Funding
    description: Treasury deposits and balances
  - name: x402
    description: HTTP 402 payment protocol
  - name: AP2
    description: Agent-to-Agent Payment Protocol
  - name: MPP
    description: Micropayment Protocol with streaming
  - name: Pay Links
    description: Shareable payment URLs
  - name: Withdrawals
    description: Withdraw unspent funds back to wallet
  - name: Settlement
    description: On-chain settlement status
  - name: Webhooks
    description: Signed payment.settled notifications for sellers
  - name: Status
    description: System health and configuration
externalDocs:
  description: mag3nt documentation
  url: https://docs.mag3nt.com
paths:
  /api/mpp/pay:
    post:
      tags:
        - MPP
      summary: (Removed) Make a micropayment via MPP protocol
      description: >
        This proprietary push endpoint has been removed. Use POST /api/pay with
        { card_id, card_token, url } instead. It automatically decodes the MPP
        challenge and settles on-chain.
      operationId: mppPay
      responses:
        '410':
          description: Endpoint removed. Migrate to /api/pay.
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  migrate_to:
                    type: string
              example:
                error: Removed. Use POST /api/pay instead.
                migrate_to: /api/pay
      deprecated: true
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: API key prefixed with 'Bearer sx_live_...'

````