{"uid":"cap_pThSVwnvojQU6j_j1cfv4","slug":"clawy-claude-opus-chat-inference-x402-usdc-46a1838c","name":"Clawy Claude Opus Inference (x402 Pay-per-call)","description":"HTTP-402 gated ChatGPT and Claude Opus inference. $0.02–$0.05 USDC per call, settled in <2s on Base via the x402 protocol. No API keys, no signup, no subscriptions.","url":"https://clawy.uk/v1/chat/opus","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"id":"chatcmpl-clawy-xyz789","model":"claude-opus-4-8","usage":{"total_tokens":11,"prompt_tokens":8,"completion_tokens":3},"object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"Hello back."},"finish_reason":"stop"}],"x_clawy":{"delivery":"claude-cli","provider":"anthropic"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.15","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ECtFwTYEY3JZukde_RZrF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs Claude Opus chat completions via HTTP-402 micropayment (x402/USDC on Base), with no API keys or subscriptions required.","exampleAgentPrompt":"Ask Claude Opus: 'Summarize the key differences between transformer and diffusion models in 3 bullet points' — pay the per-call USDC fee automatically, no API key needed.","exampleUseCases":[{"title":"One-off legal clause explanation","prompt":"Ask Claude Opus to explain what the indemnification clause in this contract actually means in plain English — just pay the per-call fee automatically, no subscription needed."},{"title":"Autonomous agent content drafting","prompt":"Have my agent call Claude Opus to draft a compelling product description for these specs, paying the USDC micropayment automatically each time without me managing any API keys."},{"title":"Crypto-native data analysis","prompt":"Send this dataset summary to Claude Opus and ask it to identify the top three trends, paying per call with USDC on Base so I'm not locked into a monthly subscription."}],"resultDescription":"Returns a JSON object in OpenAI-compatible chat.completion format containing the assistant's reply text, model identifier (claude-opus-4-8), prompt/completion/total token counts, finish reason, and Clawy-specific metadata (delivery method and provider). Payment of ~$0.15 USDC is settled on Base via x402 in under 2 seconds.","failureModes":["402 Payment Required if x402 payment header is missing or payment fails","Insufficient USDC balance causes payment rejection and no response","Invalid or malformed messages array returns 400 Bad Request","Rate limits or upstream Anthropic outages return 503 or 5xx","Network timeout if Base settlement takes longer than expected"],"whenToPreferThis":"Choose this endpoint when you need Claude Opus completions without wanting to manage Anthropic API keys or subscriptions, and your agent or workflow supports x402 micropayment headers with USDC on Base. Ideal for one-off or low-volume inference calls where a subscription would be wasteful, or for fully autonomous agents that pay for compute programmatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T00:27:00.122Z","isFirstParty":false}