# DeepSeek Chat via x402engine

> DeepSeek Chat via x402engine is a paid API for AI agents from x402engine.app, paid per call via x402, $0.005011/call, status unknown (last checked 2026-10-02).

Runs a DeepSeek flagship chat/reasoning model inference call via pay-per-use HTTP 402 micropayment, returning the model's text response

## Facts

- Endpoint: POST https://x402engine.app/api/llm/deepseek?utm_source=zero.xyz
- Price: $0.005011/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/deepseek-chat-via-x402engine-70bfcf15
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0XVaxzrlTBW1qp8cCrbpU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability deepseek-chat-via-x402engine-70bfcf15 -d '<json body>'
```

Example prompt: Ask DeepSeek to solve this step-by-step logic puzzle for me: 'A farmer has 17 sheep. All but 9 die. How many are left?' — and show the full chain of reasoning.

## When to prefer this

Choose this endpoint when you need DeepSeek's strong open-source reasoning and coding capabilities on a pay-per-call basis without committing to a subscription. Ideal for agents that need occasional or variable-volume LLM calls, want to avoid API key management overhead, or are comparing multiple models cost-effectively. Prefer DeepSeek specifically when the task involves multi-step reasoning, math, or code generation where DeepSeek is known to excel at low cost.

## Known failure modes

- Payment failure if insufficient USDC balance or x402 payment not accepted
- Prompt too long exceeding model context window
- Model timeout on very long reasoning chains
- Invalid message format in request body
- Rate limiting if too many concurrent requests

## How this service works

DeepSeek's flagship chat model — strong open-source reasoning and coding at low cost

## Output

Returns the model-generated text response from DeepSeek's flagship chat model, including any chain-of-thought reasoning or code output depending on the prompt. The response is the direct completion from the model given the input messages.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deepseek-chat-via-x402engine-70bfcf15/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402engine.app](https://www.zero.xyz/host/x402engine.app/llms.txt)