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Model Access Gateway – DeepSeek V4.1 Flash via x402
x402
Model Access Gateway – DeepSeek V4.1 Flash via x402 is a paid API for AI agents from modelaccessgateway.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-16).
OpenAI-compatible chat completions using DeepSeek V4.1 Flash, paid per-call in USDC on Base via x402 with no API key required
Price / call$0.001
Success—
StatusUnknown
How this service works
LLM inference API: OpenAI-compatible chat completions for 136 AI models (Claude, GPT, Gemini, Grok, DeepSeek, Qwen, Kimi, GLM), paid per call in USDC on Base with x402. No account, no API key, automatic refund if the model fails.
Output
A standard OpenAI-compatible chat.completion JSON object containing the assistant's generated message, finish reason (e.g. 'stop'), token usage counts (prompt, completion, total), model identifier, and a unique completion ID. Streaming mode returns server-sent events instead.
Example use cases
Autonomous agent LLM reasoning step
“I need my agent to call DeepSeek V4.1 Flash to reason through a multi-step problem — pay per call in USDC so there's no subscription or API key to manage. Send it the system prompt 'You are a helpful reasoning assistant' and user message 'What are the pros and cons of using a microservices architecture?' with max 2048 tokens.”
No-account content generation for a script
“Generate a short product description for a noise-cancelling headphone using DeepSeek V4.1 Flash — I don't want to sign up for anything, just pay per request in USDC. Keep it under 200 tokens and temperature at 0.7.”
Structured JSON extraction from raw text
“Use DeepSeek V4.1 Flash to extract the company name, founding year, and CEO from this paragraph and return the result as JSON: 'Acme Corp was founded in 1998 by Jane Doe, who continues to serve as CEO.' Set response_format to JSON mode and max_tokens to 256.”
Technical details
Endpoint
POSThttps://modelaccessgateway.com/llm/deepseek-v4.1-flash?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need DeepSeek V4.1 Flash inference with zero account setup — ideal for AI agents that pay per call in USDC via the x402 protocol on Base. Prefer it over managed LLM APIs (OpenAI, Anthropic direct) when you want no subscription commitment, automatic refunds on failure, and a fully OpenAI-compatible interface that works with existing tooling. Best for agentic workflows, scripts, or pipelines that need on-demand, trustless LLM access with crypto-native payment rails.
Side effects
- Payment failure or insufficient USDC balance — x402 payment rejected, no completion returned but automatic refund issued
- Model error or timeout — service returns error and triggers automatic refund
- Invalid messages array (empty or missing role) — 400 validation error
- max_tokens out of range (>16384 or <1) — 400 validation error
- Temperature out of range (>2 or <0) — 400 validation error
- Network timeout during streaming — partial SSE stream may be lost
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| model | string | Optional: fixed by the route (deepseek/deepseek-v4.1-flash) |
| tools | array | |
| stream | boolean | true: server-sent events after payment |
| messages | array | |
| max_tokens | integer | Optional, default 4096 |
| temperature | number | |
| response_format | object |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "chatcmpl-7f3c2a91",
"model": "deepseek/deepseek-v4.1-flash",
"usage": {
"total_tokens": 10,
"prompt_tokens": 9,
"completion_tokens": 1
},
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "OK"
},
"finish_reason": "stop"
}
],
"created": 1791979200
}
}Tags
x402
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