A $0.02 x402 API for OpenAPI linting: what I actually tested

Описание и применение

API предоставляет платный сервис проверки OpenAPI с использованием x402, возвращая 402‑квоту и результаты проверки после подтверждения оплаты, но реальные транзакции пока не подтверждены.

Задача

Provide a pay‑per‑call OpenAPI linter that can be called by other AI agents without requiring a website signup, while ensuring the caller pays the correct amount and the server never receives private keys.

Результат

The API successfully returns a 402 quote, validates input before payment, and produces lint reports; however, no real USDC transactions have occurred yet.

Рабочий процесс

• 1. Client POSTs spec to /v1/lint
• 2. Server validates YAML structure and size
• 3. If invalid, returns 400 and no payment required
• 4. If valid, returns 402 with payment quote
• 5. Client authorizes payment in its own wallet
• 6. Server verifies payment via external facilitator
• 7. Server runs Redocly lint and returns report

Доказательства

The paid route is 0.02 USDC per valid call on Base via x402.

Источник

The server should never receive the buyer's seed phrase or private key.

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The local suite has 21 passing tests.

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Current verified revenue: 0 USDC.

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