x402engine DeepSeek V4 Pro LLM API

x402

x402engine DeepSeek V4 Pro LLM API is a paid API for AI agents from x402engine.app, paid per call via x402, $0.00705/call, status unknown (last checked 2026-10-16).

Runs inference on DeepSeek V4 Pro via a pay-per-call HTTP 402 micropayment endpoint, returning OpenAI-compatible chat completions

Price / call$0.00705

Seller volume →—

Success—

StatusUnknown

How this service works

x402engine — DeepSeek's stronger V4 model — advanced reasoning, coding, and long-context analysis

Output

Returns an OpenAI-compatible JSON object containing the model name ('deepseek/deepseek-v4-pro'), a choices array with the assistant message (role, content, tool_calls if any), finish_reason, and a convenience top-level 'content' field. When streaming is enabled, returns SSE tokens in OpenAI-compatible format.

Example use cases

Autonomous agent reasoning step

“Use DeepSeek V4 Pro to decide the next action in my workflow: given this list of customer support tickets, classify each as billing, technical, or general, and output structured JSON with ticket_id and category for each.”

Code generation with tool calling

“Have DeepSeek V4 Pro write a Python function that parses ISO 8601 timestamps, and if it calls any tools, execute them and return the final answer — use the function-calling interface.”

Streaming long-form content draft

“Get DeepSeek V4 Pro to write a detailed 800-word technical blog post about transformer attention mechanisms, streaming the response as it's generated so I can display it in real time.”

Technical details

Endpoint

POSThttps://x402engine.app/api/llm/deepseek-v4-pro?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need DeepSeek V4 Pro specifically (known for strong reasoning and coding), want pay-per-call pricing without a monthly subscription, are building an autonomous agent that needs crypto-native micropayment infrastructure (USDC on Base/Solana or USDm on MegaETH), or require OpenAI-compatible response format with function/tool calling support. Prefer alternatives if you need image, video, or audio generation, or if you want a different LLM provider.

Side effects

Payment not settled — 402 response if USDC/USDm balance is insufficient
Invalid messages array format — 400 validation error if required fields missing
Model context length exceeded — truncation or error if messages exceed token limit
Tool call format errors — malformed function definitions cause 400 errors
Streaming connection drop — partial SSE stream if network interrupts mid-generation

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "model": "deepseek/deepseek-v4-pro",
    "choices": [
      {
        "index": 0,
        "message": {
          "role": "assistant",
          "content": "Hello!"
        },
        "finish_reason": "stop"
      }
    ],
    "content": "Hello!"
  }
}

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