# AINumbers.co Payment Policy API

**Canonical:** https://apis.io/apis/ainumbers-co/ainumbers-co-payment-policy-api/  
**Provider:** AINumbers.co — https://apis.io/providers/ainumbers-co/  
**Base URL:** https://ainumbers.co  
**Documentation:** https://ainumbers.co/

AINumbers.co Payment Policy API is one of 266 APIs that [AINumbers.co](https://apis.io/providers/ainumbers-co/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Payment Policy. The published artifact set on APIs.io includes an OpenAPI specification.

The payment_policy API from AINumbers.co — 6 operation(s) for payment_policy.

## Operations (6)

| Method | Path | Summary |
|---|---|---|
| POST | `/v1/tools/build_ap2_cartmandate_hashchain` | AP2 CartMandate Hash-Chain Builder |
| POST | `/v1/tools/verify_merkle_airdrop_proof` | Merkle Airdrop-Proof Verifier |
| POST | `/v1/tools/recompute_erc4626_vault_share_math` | ERC-4626 Vault Share Math |
| POST | `/v1/tools/recompute_erc7540_request_accounting` | ERC-7540 Async-Vault Request Accounting |
| POST | `/v1/tools/recompute_erc4337_userop_math` | ERC-4337 UserOperation Math |
| POST | `/v1/tools/draft_ap2_mandate_credential` | Google AP2 Mandate Builder |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/ainumbers-co/openapi/ainumbers-co-payment-policy-api-openapi.yml

## Other AINumbers.co APIs (12)

- [AINumbers.co 1099 Da API](https://apis.io/apis/ainumbers-co/ainumbers-co-1099-da-api/)
- [AINumbers.co A16z API](https://apis.io/apis/ainumbers-co/ainumbers-co-a16z-api/)
- [AINumbers.co A2A API](https://apis.io/apis/ainumbers-co/ainumbers-co-a2a-api/)
- [AINumbers.co ACH API](https://apis.io/apis/ainumbers-co/ainumbers-co-ach-api/)
- [AINumbers.co ACP API](https://apis.io/apis/ainumbers-co/ainumbers-co-acp-api/)
- [AINumbers.co Agent Guardrail Mandate API](https://apis.io/apis/ainumbers-co/ainumbers-co-agent-guardrail-mandate-api/)
- [AINumbers.co agent spend control API](https://apis.io/apis/ainumbers-co/ainumbers-co-agent-spend-control-api/)
- [AINumbers.co Agent Traffic API](https://apis.io/apis/ainumbers-co/ainumbers-co-agent-traffic-api/)
- [AINumbers.co agentic payments API](https://apis.io/apis/ainumbers-co/ainumbers-co-agentic-payments-api/)
- [AINumbers.co Agreement API](https://apis.io/apis/ainumbers-co/ainumbers-co-agreement-api/)
- [AINumbers.co Aiuc 1 API](https://apis.io/apis/ainumbers-co/ainumbers-co-aiuc-1-api/)
- [AINumbers.co AMLA API](https://apis.io/apis/ainumbers-co/ainumbers-co-amla-api/)

## Tags

Payment Policy

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/ainumbers-co/ainumbers-co-payment-policy-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/ainumbers-co/.