the402 endpoint detail

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agent402.tools chat completions

https://agent402.tools/v1/chat/completions

answers 402

OpenAI-compatible chat completions over x402 - point any OpenAI SDK at base_url https://agent402.tools/v1 and pay per call in USDC (Base, Solana, Polygon, Arbitrum, Stellar), no API key, no signup. Budget/mid models: gpt-4o-mini, claude haiku, gemini flash, deepseek, llama, mistral, qwen. Full wire compatibility incl. tools/function-calling and response_format. GET /v1/models lists every model. St

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
176 ms
Payment options
13 usable of 13
Last checked
2026-09-06T01:10:47.110Z (19d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fv1%2Fchat%2Fcompletions"