Selling APIs to AI agents with x402: 69 endpoints, Cloudflare Workers, zero API keys

Описание и применение

Автор создал 69 API‑эндпоинтов без ключей, используя протокол x402 и Cloudflare Workers, позволяя AI‑агентам оплачивать запросы мгновенно и без регистрации.

Задача

AI agents need paid data and inference services without traditional API keys or signup, requiring a frictionless payment flow.

Результат

The author successfully launched 69 endpoints across data, inference, and composite brief services within 48 hours, achieving 2k requests but no paid calls yet, demonstrating the feasibility of zero-key, pay-per-call API access for AI agents.

Рабочий процесс

• 1. Agent requests endpoint (e.g., GET /v1/fx/EUR).
• 2. Server responds 402 Payment Required with price and wallet address.
• 3. Agent signs a USDC transfer on Base and retries request with X-PAYMENT header.
• 4. Server verifies payment, returns JSON response.
• 5. Settlement occurs only after a 2xx response, ensuring no charge for failed calls.

Доказательства

An AI agent needs the EUR/EGP rate. It calls GET /v1/fx/EUR. The server answers 402 Payment Required with a price ($0.01) and a wallet. The agent signs a USDC transfer on Base, retries with an X-PAYMENT header, gets JSON.

Источник

WorldData402 — 39 data endpoints: FX for 160+ currencies, historical rates, SEC company filings, EU public tenders, World Bank indicators, EU VAT validation, public holidays, geocoding, weather, air quality, earthquakes, Wikipedia, arXiv, Crossref, RDAP, DNS, npm/PyPI, barcodes. $0.01–$0.05 per call.

Источник

Inference402 — 15 endpoints on Cloudflare Workers AI: chat (small/large), structured JSON output, summarize, translate (plus an Arabic-tuned route that handles Egyptian dialect), extract, classify, sentiment, keywords, rewrite, embeddings, moderation, image description, Whisper transcription. $0.002–$0.02.

Источник

Briefs402 — 10 composite reports (company, country, market, tenders, domain due-diligence, location, research literature, product, package risk, long-document translation). It calls the other two internally and sells the finished brief for $0.10–$0.50.

Источник