{"uid":"cap_zQ1N9syHBm3eajNdxbc5O","slug":"api-the402-ai-fb109894","name":"the402.ai Thread Message Sender","description":"Send thread message (free with API key)","url":"https://api.the402.ai/v1/threads/thread_8a312604bafb4876/messages?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["id"],"properties":{"id":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CVvXQJAGBe7rE1p09RUU1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Sends a message to a specific thread on the the402.ai platform using a thread ID","exampleAgentPrompt":"Send a message to thread ID thread_8a312604bafb4876 on the402.ai saying 'Please provide the status update for project Alpha.'","exampleUseCases":null,"resultDescription":"A confirmation that the message was successfully posted to the specified thread, potentially including the message ID or updated thread state.","failureModes":["Invalid or missing thread ID returns an error","Unauthorized access if API key is invalid or missing","Thread does not exist or has been deleted","Payment failure if USDC balance is insufficient for the $0.001 per call fee","Malformed request body missing the required 'id' field"],"whenToPreferThis":"Use this endpoint when you need to programmatically send a message to a specific existing thread on the the402.ai platform, especially in agentic workflows where threads are used to coordinate tasks or conversations. Best suited when you already have a thread ID and want to append a message to it at low cost ($0.001 USDC).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T13:27:48.191Z","isFirstParty":false,"canonicalSlug":"api-the402-ai-aa99fe88"}