# DeepSeek-on-x402

> Pay-per-call LLM API. Send any prompt, receive a DeepSeek v4 Flash response (adaptive thinking). Cost: 0.01 USDC per request on Base.

## Endpoints

- [GET/POST /service/chat?prompt=...](https://x402-ai-api.botty4541.workers.dev/service/chat?prompt=hello): Paid LLM call. Returns JSON with the model reply. Requires an x402 payment (HTTP 402 + payment-required header).

## Payment

- Network: Base (eip155:8453)
- Asset: USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)
- Price: 0.01 USDC per request
- Scheme: x402 exact, facilitated by Coinbase CDP (gasless for the payer)
- Use any x402 wallet, e.g. `awal x402 pay 'https://x402-ai-api.botty4541.workers.dev/service/chat?prompt=hello'`

## Pricing transparency

- Model: deepseek-v4-flash, adaptive thinking
- Upstream input cost: $0.14 / 1M tokens; output: $0.28 / 1M tokens (incl. reasoning)