---
title: "ACP Checkout Validator & Shared Payment Token Scope Linter"
method: POST
path: "/v1/tools/lint_acp_checkout"
tags: ["ACP", "Agentic Commerce Protocol", "Shared Payment Token", "delegated payment", "OpenAI", "Stripe"]
---

# ACP Checkout Validator & Shared Payment Token Scope Linter

`POST /v1/tools/lint_acp_checkout`

## Request

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

Validates an Agentic Commerce Protocol checkout-session object (top-level shape) and lints a Shared Payment Token / delegated payment token for safe scoping: single-use, merchant binding, amount cap, currency, and expiry. ACP field names are illustrative (2026-04-17) — verify against the published ACP JSON schema.

**Tool URL:** https://ainumbers.co/tools/281-acp-checkout-shared-payment-token-linter.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `checkout_session` object: ACP checkout session JSON
  - `payment_token` object: Shared / delegated payment token descriptor

## Response `200`

Successful tool execution result

- object
  - `findings` unknown[]
    - unknown
  - `score` number

---

[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)