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openapi: 3.2.0
info:
title: x402 Format Checker Types API
version: 1.3.0
description: Format and checksum validation for IBAN, EU VAT, Polish NIP/REGON/PESEL and email, pay-per-call via x402. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base. No account or API key. Also available as a remote MCP server at https://validate.crewofthecaptain.com/mcp and an A2A agent at https://validate.crewofthecaptain.com/a2a. We never store the values you check; we count requests and public payment data.
x-guidance: 'POST /api/validate/{type} with JSON {"value": "..."}. An unpaid request returns 402 with a PAYMENT-REQUIRED header; pay with any x402 v2 client and retry with PAYMENT-SIGNATURE. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base.'
contact:
url: https://crewofthecaptain.com
servers:
- url: https://validate.crewofthecaptain.com
tags:
- name: Types
paths:
/api/types:
get:
summary: List available checks, price, network and payTo (free)
security: []
responses:
'200':
description: OK
tags:
- Types
operationId: getApiTypes
x-operation-id-source: derived