{"uid":"cap_JPHI9lqRwceYa1QhEpNCr","slug":"api-the402-ai-384950e8","name":"the402.ai Thread Message Sender","description":"Send thread message (free with API key)","url":"https://api.the402.ai/v1/threads/thread_b4bd1ded4d674d36/messages","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_5U6cnVHGNeMifXImMyNHb","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":"Posts a new message to a specific thread on the the402.ai platform using an API key","exampleAgentPrompt":"Send a message to thread ID thread_b4bd1ded4d674d36 on the402.ai saying 'Please confirm the order has been processed and provide a receipt.'","exampleUseCases":null,"resultDescription":"A confirmation that the message was posted to the specified thread, likely including the message object or message ID, timestamp, and thread reference.","failureModes":["Missing or invalid thread ID returns an error (400 Bad Request)","Invalid or missing API key results in authentication failure (401 Unauthorized)","Thread not found returns 404","Rate limiting or quota exceeded returns 429","Malformed request body returns 400"],"whenToPreferThis":"Use this endpoint when you need to send a message to an existing thread on the the402.ai platform and have a valid thread ID. This is suitable for agentic workflows where conversation threads are managed on the402.ai and you need to post follow-up messages, replies, or instructions. It is free with an API key, making it cost-effective for high-frequency messaging within threads.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T08:25:27.092Z","isFirstParty":false}