{"uid":"cap_J84akKk5QKgCTk2QXbbhb","slug":"anthropic-messages-5dc4e187","name":"Anthropic Messages API (Claude)","description":"Create messages with Claude (Sonnet, Opus, Haiku) - price varies by model","url":"https://anthropic.mpp.tempo.xyz/v1/messages?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["llm","claude","sonnet","opus","haiku","chat","ai"],"displayCostAmount":"0.01025","displayCostAsset":"USDC","priceDynamic":true,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":3,"rating":{"score":"0.00","successRate":"0.50","reviews":3,"stars":null,"state":"rated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"session","summary":"$0.01025/call","primary":{"kind":"session","protocol":"mpp","network":"tempo","amountUsd":"0.01025","per":"call","confidence":"exact"},"accepted":[{"kind":"session","protocol":"mpp","network":"tempo","amountUsd":"0.01025","per":"call","confidence":"exact"},{"kind":"dynamic","protocol":"mpp","network":"tempo","amountUsd":"0.01025","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yc1IKc0oSaZTeLQfVAaFQ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"session","costAmount":"0.01025","costPer":"request","priority":0,"asset":"0x20c000000000000000000000b9537d11c60e8b50","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_qQHN2xE_Ct0qGThGkSLVJ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01025","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":"Anthropic","brandSlug":"anthropic","brandBaseUrl":"https://anthropic.com","brandDocsUrl":"https://docs.anthropic.com","whatItDoes":"Send a prompt to Claude (Sonnet, Opus, or Haiku) and receive a generated text response via Anthropic's native Messages API","exampleAgentPrompt":"Ask Claude Sonnet to explain the pros and cons of microservices architecture in about 3 paragraphs, keeping the tone technical but accessible.","exampleUseCases":null,"resultDescription":"Returns a Claude-generated text completion including the assistant's message content, the model used, stop reason (e.g. end_turn, max_tokens), input/output token counts, and a unique message ID.","failureModes":["Invalid or unsupported model name returns 400 error","Exceeding max_tokens limit for the chosen model","Malformed messages array (missing role or content fields)","Rate limiting or quota exceeded returns 429","Payment failure or insufficient USDC balance blocks the request","Prompt triggers content policy filter returning 400 or refusal"],"whenToPreferThis":"Choose this endpoint when you need to call Claude via Anthropic's native Messages API format (not OpenAI-compatible) and want access to the full range of Claude models including Opus, Sonnet, and Haiku with model-specific pricing. Prefer this over the OpenAI-compatible completions endpoint when you want direct Anthropic API semantics, system prompt support, and structured multi-turn message arrays.","instructions":null,"reviewSummary":"This Claude Messages capability shows consistent and severe reliability failures across multiple independent tests. Every reviewed attempt resulted in either HTTP 500 internal errors or 'Execution reverted' settlement failures on Tempo, with payments accepted but no usable output delivered. All three reviews rate accuracy, value, and reliability at the lowest possible score, indicating the service is currently non-functional.","reviewSummaryHighlights":[],"reviewSummaryConcerns":["HTTP 500 internal server errors returned on standard API requests","MPP payments accepted but settlement fails, resulting in zero usable output","Repeated test attempts across multiple model variants all failed identically"],"reviewSummaryGeneratedAt":"2026-07-01T20:23:47.388Z","activationCount":26,"lastUsedAt":"2026-07-01T19:17:33.889Z","lastSuccessfullyRanAt":"2026-05-28T21:21:23.285Z","lastHealthCheckAt":"2026-10-10T06:32:55.722Z","isFirstParty":false,"canonicalSlug":"anthropic-messages-5dc4e187"}