---
title: "AP2 PaymentReceipt Verifier & HNP Guardrail"
method: POST
path: "/v1/tools/verify_ap2_payment_receipt"
tags: ["TODO_TAGS_REVIEW", "TODO_AP2_EXPORT_REVIEW"]
---

# AP2 PaymentReceipt Verifier & HNP Guardrail

`POST /v1/tools/verify_ap2_payment_receipt`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/verify_ap2_payment_receipt`
- Auth: none declared

Verifies an AP2 v0.2 PaymentReceipt against its signed Intent/Cart/Payment mandate chain, and applies the Human-Not-Present (HNP) autonomy guardrail: amount, category, mandate age, cart freshness. Runtime/post-trade: art-01 validates the mandate before the buy; ART-62 verifies the receipt after, applying HNP gating (AP2 v0.2 new primitive, FIDO Alliance Apr 2026).

**Tool URL:** https://ainumbers.co/chaingraph/art-62-ap2-payment-receipt-verifier.html

## Request body

- object
  - `hnp_policy` unknown
  - `mandate_chain` unknown
  - `payment_receipt` unknown

## Response `200`

Successful tool execution result

- object
  - `authorized_amount_headroom` string
  - `findings` object[]
    - `check` string
    - `detail` string
    - `result` string
  - `hnp_verdict` string
  - `human_present` boolean
  - `mandate_chain_intact` boolean
  - `note` string
  - `receipt_id` string
  - `receipt_verdict` string
  - `signature_check` string
  - `status_asof` 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)