{"uid":"cap_ZhbruPDkSwHKOMf-Q1xuv","slug":"sitecheck-api-llm-chat-34bf034f","name":"SiteCheck API – LLM Chat","description":"Pay-per-call tools for AI agents: image generation, speech-to-text, text-to-speech, embeddings, LLM chat, website audits and contact enrichment. Plus prediction-market search, briefs, quotes and unsigned buy transactions, powered by Panta. Payment: x402, USDC on Base, Solana or Arc. No signup, no API key.","url":"https://api.sitecheck-api.workers.dev/api/chat?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"prompt":{"type":"string"},"messages":{"type":"array","description":"[{role, content}]"},"max_tokens":{"type":"integer","description":"Up to 2048"},"temperature":{"type":"number"}}},"responseSchema":{"type":"json","example":{"model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","usage":{"prompt_tokens":20,"completion_tokens":40},"response":"x402 lets agents pay per request..."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xVPkbfsb_zYys8tAuZ3EN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Send a prompt or conversation history to a hosted LLM (Llama 3.3 70B) and receive a text completion, paid per-call via USDC on Base with no signup required.","exampleAgentPrompt":"Ask the Llama 3.3 70B model: 'What are the key differences between x402 and traditional API key authentication?' — use up to 300 tokens and a temperature of 0.7, paying per call with USDC on Base.","exampleUseCases":[{"title":"Agent reasoning without an OpenAI key","prompt":"I don't have an OpenAI account — can you use the pay-per-call Llama chat endpoint to answer this for me: 'Explain how micropayments enable autonomous AI agents to access APIs without subscriptions.' Keep it under 200 tokens."},{"title":"Dynamic FAQ generation for a product","prompt":"Use the LLM chat endpoint to generate a friendly FAQ answer for this question from our customers: 'How do I cancel my subscription?' — keep the response concise, about 150 tokens, and use a temperature of 0.5."},{"title":"Multi-turn conversation summarization","prompt":"Send this conversation history to the Llama model and ask it to summarize the key decisions made: the messages are [{role: user, content: 'We need to cut costs'}, {role: assistant, content: 'Consider cloud migration'}, {role: user, content: 'What are the risks?'}] — use up to 512 tokens."}],"resultDescription":"A JSON object containing the model name (e.g. @cf/meta/llama-3.3-70b-instruct-fp8-fast), a 'response' string with the generated text, and a 'usage' object with prompt_tokens and completion_tokens counts.","failureModes":["Payment failure: insufficient USDC balance or x402 payment not accepted — returns 402 Payment Required","Invalid messages format: malformed role/content array causes 400 Bad Request","max_tokens exceeds 2048 limit — request rejected or silently capped","Temperature out of valid range (e.g. negative) — may return 400 or unpredictable output","Network timeout on Cloudflare Workers if inference takes too long — returns 504"],"whenToPreferThis":"Choose this endpoint when you need a no-signup, no-API-key LLM chat capability paid for in USDC micropayments per call — ideal for autonomous agents that manage their own wallets on Base and need Llama 3.3 70B inference without a subscription or credential management overhead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:11:58.982Z","isFirstParty":false,"canonicalSlug":"sitecheck-api-llm-chat-34bf034f"}