the402 endpoint detail

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x402.orth.sh chat completions

https://x402.orth.sh/baseten/v1/chat/completions

answers 402

Send a conversation to a model and get a completion back. Works exactly like the OpenAI chat completions endpoint. Pass messages and a model slug, get a response with the assistant's reply. Supports streaming for real-time token delivery, tool calling for function execution, structured outputs via response_format, and controllable reasoning depth on supported models. | ERROR: Unable to calculate p

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0xDEFaDa13F790cf39168691B391Cfa0b6f1f5c267
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
244 ms
Payment options
3 usable of 3
Last checked
2026-08-15T14:40:56.013Z (4h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.orth.sh%2Fbaseten%2Fv1%2Fchat%2Fcompletions"