{"uid":"cap_9-njXb85upPLuEX1AQDrO","slug":"agentrxi-qwen3-8-chat-completion-99b82380","name":"AgentRXI Qwen3.8 Chat Completion","description":"OpenAI-compatible chat completions on Alibaba Qwen 3.8 27B, the newest Qwen with reasoning, tool calling and a 262K context. Set your OpenAI SDK base URL to https://agentrxi.com/v1/qwen3.8 and pay per token with x402 instead of an API key: $0.9 per million input and $6.4 per million output tokens, minimum $0.002 a call, at most $0.1039. The 402 quotes your request's maximum; \"upto\" payers are charged only the tokens used. Same request/response shape as OpenAI (tool calling, r","url":"https://agentrxi.com/v1/qwen3.8/chat/completions?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["prompt"],"properties":{"prompt":{"type":"string","description":"User message"},"system":{"type":"string","description":"Optional system message"},"max_tokens":{"type":"integer"},"temperature":{"type":"number"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"id":"chatcmpl-...","model":"qwen3.8-27b","usage":{"total_tokens":18,"prompt_tokens":14,"completion_tokens":4},"object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"Bonjour !"},"finish_reason":"stop"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.015126","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":"$0.015126/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015126","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.015126","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XWo53Pp37BontILo8MIpX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.015126","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Pay-per-call LLM chat completion using Qwen3.8-27B, no API key required, billed per call in USDC via x402","exampleAgentPrompt":"Ask Qwen3.8 to summarize the following paragraph in three bullet points and keep the response under 200 tokens: 'Quantum computing leverages quantum mechanical phenomena such as superposition and entanglement to perform computations that classical computers find intractable, potentially revolutionizing fields like cryptography, drug discovery, and optimization.'","exampleUseCases":[{"title":"Multilingual translation for agent pipelines","prompt":"Translate this English support ticket into French using Qwen3.8, keeping a professional tone and max 150 tokens: 'Your subscription has been cancelled and a refund will be processed within 5 business days.'"},{"title":"Quick factual Q&A without API key","prompt":"Ask Qwen3.8 what the capital of New Zealand is — I just need a one-sentence answer, no signup or key needed, just pay per call."},{"title":"Code explanation for developer agent","prompt":"Have Qwen3.8 explain what this Python snippet does in plain English, limit the response to 100 tokens: 'result = [x**2 for x in range(10) if x % 2 == 0]'"}],"resultDescription":"Returns an OpenAI-compatible chat completion JSON object containing the assistant's reply text, finish reason, model name, and token usage breakdown (prompt tokens, completion tokens, total tokens).","failureModes":["Payment not received or insufficient USDC balance — 402 Payment Required","Prompt parameter missing — 400 Bad Request","Rate limiting or capacity issues — 429 Too Many Requests","Model inference timeout for very long prompts — 504 Gateway Timeout","Invalid temperature or max_tokens values — 400 validation error"],"whenToPreferThis":"Choose this endpoint when you need a capable mid-size LLM (27B parameters) for general reasoning, summarization, translation, or Q&A without the overhead of API key registration, and you want per-call USDC billing via x402 micropayments. Prefer it over heavier endpoints like Llama 70B when cost and latency matter more than maximum reasoning depth, and over embedding or moderation endpoints when you need free-form text generation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:38:59.444Z","isFirstParty":false,"canonicalSlug":"agentrxi-qwen3-8-chat-completion-99b82380"}