{"uid":"cap_k6xoiURVyAN3FcNINuesQ","slug":"x402donghang-qwen-3-8-max-chat-completions-8269e3b8","name":"x402donghang Qwen-3.8-Max 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/qwen-3.8-max/chat/completions","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Use \"qwen-3.8-max\""},"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":"qwen-3.8-max","object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"Hello!"},"finish_reason":"stop"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.012","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":"$0.012/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.012","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QHVznhnKAYS4jR06QatlV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.012","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Provides OpenAI-compatible chat completions using the Qwen-3.8-Max model, payable per-call in USDC via x402 with no signup required.","exampleAgentPrompt":"Ask the Qwen-3.8-Max model to write a concise product description for a new ergonomic office chair, keeping it under 150 words and suitable for an e-commerce listing.","exampleUseCases":[{"title":"On-demand LLM for agentic pipeline","prompt":"Use Qwen-3.8-Max to classify the following customer support ticket as 'billing', 'technical', or 'general' and give a one-sentence suggested reply: 'My invoice shows a double charge from last month.'"},{"title":"No-signup code explanation","prompt":"I need Qwen-3.8-Max to explain this Python function to me in plain English — no account setup, just pay per call: def fib(n): return n if n <= 1 else fib(n-1) + fib(n-2)"},{"title":"Crypto analysis reasoning task","prompt":"Have the Qwen 3.8 Max model summarize the key risks and opportunities for a DeFi protocol launching on Ethereum in 2025, in about 200 words."}],"resultDescription":"Returns an OpenAI-compatible chat completion JSON object with an 'id', 'model', 'object', and a 'choices' array containing the assistant's message content and finish reason.","failureModes":["402 Payment Required if USDC payment via x402 is missing or insufficient","Invalid model name returns error — must use exactly 'qwen-3.8-max'","Malformed messages array (missing role or content) causes a 400 error","Streaming errors if stream:true is set but client doesn't handle SSE","Service unavailability due to self-hosted duckdns infrastructure downtime"],"whenToPreferThis":"Choose this endpoint when you need Qwen-3.8-Max specifically, want a pay-per-call model with no monthly subscription, need OpenAI-compatible API shape for drop-in compatibility, or are building an agent that uses USDC micropayments via x402 for LLM inference.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T21:28:52.030Z","isFirstParty":false}