{"uid":"cap_6ema1ciwZEjkeKwBammMQ","slug":"model-access-gateway-deepseek-chat-x402-pay-per-call-1e15080c","name":"Model Access Gateway – DeepSeek Chat (x402 Pay-Per-Call)","description":"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.","url":"https://modelaccessgateway.com/llm/deepseek-chat?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Optional: fixed by the route (deepseek/deepseek-chat)"},"tools":{"type":"array"},"stream":{"type":"boolean","description":"true: server-sent events after payment"},"messages":{"type":"array","items":{"type":"object","required":["role"],"properties":{"role":{"enum":["system","user","assistant","tool","developer"],"type":"string"},"content":{"type":["string","array","null"]}}},"minItems":1},"max_tokens":{"type":"integer","maximum":16384,"minimum":1,"description":"Optional, default 4096"},"temperature":{"type":"number","maximum":2,"minimum":0},"response_format":{"type":"object"}}},"responseSchema":{"type":"json","example":{"id":"chatcmpl-7f3c2a91","model":"deepseek/deepseek-chat","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}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0014","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":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.0014/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0014","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0014","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_a3zeyG3nhxCgCDFONcydQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0014","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs a DeepSeek Chat inference call via an OpenAI-compatible chat completions API, billed per call in USDC on Base with no API key required.","exampleAgentPrompt":"Ask DeepSeek Chat to explain the difference between supervised and unsupervised learning in plain English — pay per call in USDC, no API key needed, and cap the response at 512 tokens.","exampleUseCases":[{"title":"Autonomous agent reasoning step","prompt":"Use DeepSeek Chat to reason through this customer support ticket and suggest the best resolution. Keep the response under 300 tokens and make sure you pay per call so we don't need to manage API keys."},{"title":"Structured JSON extraction from text","prompt":"Ask DeepSeek Chat to extract the key entities from this paragraph and return them as a JSON object — use response_format JSON mode and limit output to 1024 tokens."},{"title":"Streaming code explanation in real time","prompt":"Have DeepSeek Chat walk me through this Python function line by line with streaming turned on so I can see the explanation as it comes in, using the pay-per-call USDC gateway."}],"resultDescription":"Returns an OpenAI-compatible chat.completion JSON object containing the assistant's reply message, finish reason, token usage breakdown (prompt, completion, total), model identifier, and a unique completion ID. Streaming mode delivers server-sent events instead.","failureModes":["Payment failure or insufficient USDC balance — call rejected before inference begins","Model-side error triggers automatic refund — no charge for failed completions","messages array empty or missing — 400 validation error","max_tokens out of range (must be 1–16384) — request rejected","Network timeout during streaming — partial SSE stream","Unsupported tool schema — may cause unexpected behavior"],"whenToPreferThis":"Choose this endpoint when you need DeepSeek Chat specifically (strong coding and reasoning capabilities), want to avoid API key management, need per-call crypto billing in USDC with automatic refunds on failure, or are building autonomous agents that self-fund LLM calls on Base. Prefer it over managed DeepSeek accounts when operating keyless or in decentralized environments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:35:14.768Z","isFirstParty":false,"canonicalSlug":"model-access-gateway-deepseek-chat-x402-pay-per-call-1e15080c"}