SingIt Ask: DeepSeek V4 Pro Chat Completions

x402

SingIt Ask: DeepSeek V4 Pro Chat Completions is a paid API for AI agents from ask.singitai.app, paid per call via x402, $0.0015/call, status unknown (last checked 2026-10-30).

Proxies chat completions to DeepSeek's V4 Pro model (optimized for coding and reasoning) via an OpenAI-compatible API, requiring no API key or account, paid per-call with USDC.

Price / call$0.0015

Seller volume →—

Success—

StatusUnknown

How this service works

SingIt Ask: DeepSeek V4 Pro (DeepSeek) chat completions with no API key or account, OpenAI-compatible. DeepSeek's larger V4 model: coding and reasoning tasks. Call it when an agent needs DeepSeek V4 Pro specifically.

Output

A JSON object in OpenAI chat completion format containing the assistant's generated message, usage statistics (prompt tokens, completion tokens, total tokens), model identifier, and finish reason. No streaming — the full response is returned at once.

Example use cases

Code review and optimization

“I need DeepSeek V4 Pro to review this recursive Fibonacci function and suggest a more efficient implementation — it's timing out on large inputs. Messages: system: 'You are an expert Python developer', user: 'Optimize this: def fib(n): if n<=1: return n; return fib(n-1)+fib(n-2)'. Cap the response at 1000 tokens.”

Complex multi-step reasoning problem

“Can you send this logic puzzle to DeepSeek V4 Pro and get a step-by-step solution? The puzzle is: 'Three switches control three lights in another room. You can only enter the room once. How do you determine which switch controls which light?' Keep the answer under 600 tokens.”

Technical documentation generation

“Have DeepSeek V4 Pro write a detailed README for my REST API project based on these notes — system: 'You are a technical writer', user: 'My project is a task manager API with endpoints for create, read, update, delete tasks, using JWT auth and PostgreSQL'. Limit to 1200 tokens.”

Technical details

Endpoint

POSThttps://ask.singitai.app/v1/chat/deepseek-v4-pro?utm_source=zero.xyz

When to prefer

Choose this endpoint when you specifically need DeepSeek V4 Pro's stronger coding and reasoning capabilities over lighter models like DeepSeek V4.1 Flash, and when you want to avoid creating a DeepSeek account or managing API keys. Ideal for pay-per-call agent pipelines where you need a powerful reasoning model on demand. Prefer it over the Flash variant for complex multi-step problems, detailed code generation, or tasks where reasoning depth matters more than speed or cost.

Side effects

Message content exceeds 24000 character limit — request rejected
max_tokens set above 1200 — validation error
Empty messages array or missing required role/content fields — schema validation error
Payment failure or insufficient USDC balance — 402 payment required response
Model id not found in /v1/models — model not available error
Rate limiting or upstream DeepSeek API unavailability — 503 or timeout

Input

Schema · Request body

Field	Type	Description
model	string	Any model id from GET /v1/models; the ceiling follows its price. Omit for the default model.
stream	boolean	Streaming is not offered.
messages	array	The conversation, oldest first.
max_tokens	integer	The longest answer, in tokens. The payment ceiling grows with it; the charge follows what was used.

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