{"uid":"cap_C58ShGXz3KZAQDKNbZcX9","slug":"x402donghang-deepseek-v4-pro-chat-completions-8b3081ac","name":"x402donghang DeepSeek-V4-Pro Chat Completions","description":"Fresh crypto narrative research with market context and verifiable source URLs. Free BTC sample; custom radar $0.02/call via x402 USDC.","url":"https://x402donghang.duckdns.org/x402/v1/models/deepseek-v4-pro/chat/completions?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Use \"deepseek-v4-pro\""},"stream":{"type":"boolean"},"messages":{"type":"array","items":{"type":"object","required":["role","content"],"properties":{"role":{"type":"string"},"content":{"type":"string"}}}},"max_tokens":{"type":"number"}}},"responseSchema":{"type":"json","example":{"id":"chatcmpl-x402","model":"deepseek-v4-pro","object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"Hello!"},"finish_reason":"stop"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_v0S08hehipIFMCFlNJ2Tb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Pay-per-call OpenAI-compatible chat completions endpoint powered by DeepSeek-V4-Pro, billed at $0.008 USDC per call via x402 micropayments on Base or Solana.","exampleAgentPrompt":"Send a message to DeepSeek-V4-Pro asking it to explain how zero-knowledge proofs work in simple terms, paying per call with USDC — no account needed.","exampleUseCases":[{"title":"One-off LLM call for agent pipeline","prompt":"I need to call a capable language model just once for my agent task — use DeepSeek-V4-Pro to answer 'What are the top risks in DeFi lending?' and pay the small USDC fee automatically."},{"title":"Crypto-aware chatbot response generation","prompt":"Generate a detailed response using DeepSeek-V4-Pro to this user question: 'How does the Base blockchain differ from Ethereum mainnet?' — keep it under 300 tokens."},{"title":"Streaming chat for interactive assistant","prompt":"Chat with DeepSeek-V4-Pro using streaming mode: send the message 'Walk me through building a simple smart contract step by step' and stream the reply back to me in real time."}],"resultDescription":"Returns a JSON chat completion object with an OpenAI-compatible structure: a unique completion ID, the model name ('deepseek-v4-pro'), an object type of 'chat.completion', and a choices array containing the assistant's reply message, its role, and a finish_reason indicating why generation stopped (e.g. 'stop').","failureModes":["Payment not included or insufficient USDC — returns HTTP 402 Payment Required","Invalid model name (must be exactly 'deepseek-v4-pro') — may return 400 or model-not-found error","Malformed messages array (missing required 'role' or 'content' fields) — returns 400 Bad Request","max_tokens too large — may be truncated or rejected depending on model limits","Service unavailable or cold-start latency on duckdns host — returns 502 or timeout","Streaming mode errors if client does not support SSE parsing"],"whenToPreferThis":"Choose this endpoint when you need a no-signup, pay-per-call chat completions API using DeepSeek-V4-Pro specifically, billed in micro-amounts of USDC via x402. Ideal for agent pipelines that want to avoid subscription overhead or API key management, or when testing DeepSeek inference on a per-call basis. Not ideal if you need guaranteed SLA, high-volume throughput, or a provider with enterprise support.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T05:26:42.333Z","isFirstParty":false,"canonicalSlug":"x402donghang-deepseek-v4-pro-chat-completions-8b3081ac"}