---
title: "Tempo MPP Agent Mandate"
method: POST
path: "/v1/tools/decode_mpp_session"
tags: ["TODO_TAGS_REVIEW"]
---

# Tempo MPP Agent Mandate

`POST /v1/tools/decode_mpp_session`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/decode_mpp_session`
- Auth: none declared

Parses an MPP (Machine Payments Protocol) session, validates spend cap and session terms, maps HTTP-402 flow to AP2 Intent→Cart→Payment, performs KYA agent identity check (did:key format), models settlement cost, and emits a signed agent-payment mandate. W-C co-lead. ISO 20022 pacs.008-subset artifact; did:key identity in debtor field.

**Tool URL:** https://ainumbers.co/chaingraph/art-36-tempo-mpp-agent-mandate.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `agentDid` string: type not evidenced by kernel source
  - `cadence` string: type not evidenced by kernel source
  - `duration` string: type not evidenced by kernel source
  - `merchant` string: type not evidenced by kernel source
  - `rail` string: type not evidenced by kernel source
  - `spendCap` unknown
  - `stablecoin` string: type not evidenced by kernel source

## Response `200`

Successful tool execution result

- object
  - `cost_per_call` number
  - `did_valid` boolean
  - `max_vouchers` integer
  - `rail` string
  - `risk` object
    - `level` string
    - `reasons` string[]
  - `spend_cap` integer
  - `stablecoin` string

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)