{"uid":"cap_3TzQghOTZaw2oEE4HXPkm","slug":"agentrxi-llm-chat-completion-llama-3-1-8b-c821d50b","name":"AgentRXI LLM Chat Completion (Llama 3.1 8B)","description":"Pay-per-call LLM chat completion (Llama 3.1 8B, fast), no API key. Send OpenAI-style messages, get the assistant reply. Flat price per request, up to 2k output tokens. Also callable as GET with the same fields as query parameters.","url":"https://agentrxi.com/v1/llm?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":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gXJfkLjox2gwDlV28n0lN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","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 Meta Llama 3.1 8B — send a prompt (and optional system message) via GET request, receive the assistant reply, no API key required.","exampleAgentPrompt":"Ask the Llama 3.1 8B model: 'Summarize the pros and cons of electric vehicles in three bullet points.' Use a system message that says 'You are a concise technical writer' and limit the output to 300 tokens.","exampleUseCases":[{"title":"Quick one-off LLM answer","prompt":"Without setting up an API key, ask the Llama model: 'What are the top five programming languages for data science in 2025?' — keep the response under 500 tokens."},{"title":"Agent subtask text generation","prompt":"I need you to draft a short product description for a standing desk called 'ErgoPro' — use the system message 'You are a persuasive copywriter' and cap output at 200 tokens."},{"title":"Dynamic prompt for customer support bot","prompt":"Send this user's question to the Llama 3.1 8B model with the system message 'You are a friendly customer support agent for a SaaS company': 'How do I reset my password and update my billing info?'"}],"resultDescription":"Returns the assistant's reply text as a chat completion response in OpenAI-compatible format, containing the generated message content up to the requested max_tokens (default up to 2,000 output tokens).","failureModes":["Missing required 'prompt' query parameter returns a 400 error","Payment not included or invalid x402 payment header returns a 402 Payment Required","Temperature out of valid range may cause a 422 validation error","Model overload or provider downtime may return a 503 or timeout","Prompt exceeds context window limit may result in truncation or error"],"whenToPreferThis":"Choose this endpoint when you need a fast, low-cost, keyless LLM call for straightforward text generation or chat tasks and are fine with Llama 3.1 8B quality (8B parameter model). Prefer it over the sibling DeepSeek or QwQ endpoints when you don't need chain-of-thought reasoning or frontier-model capability and want the lowest latency and cost per call ($0.005 USDC). Ideal for agentic pipelines that need many small LLM calls without managing API credentials.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:39:24.296Z","isFirstParty":false,"canonicalSlug":"agentrxi-llm-chat-completion-llama-3-1-8b-c821d50b"}