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x402donghang.duckdns.org chat completions
https://x402donghang.duckdns.org/x402/v1/chat/completions
answers 402
Grok 4.5 High chat via x402. OpenAI-compatible /v1/chat/completions, streaming supported. Listed as grok-4.5-high. $0.01 USDC per request on Base/Solana mainnet. See GET /x402/v1/models for the full chat catalog.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0x7F394b1E127CBCEA346979E552A4227328385B3d
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 331 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-08-15T14:26:39.962Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402donghang.duckdns.org%2Fx402%2Fv1%2Fchat%2Fcompletions"