{"uid":"cap_SFrg6BFhHAixVrZKJ0Eef","slug":"sarachai-chat-api-4f818aef","name":"Sarachai Chat API","description":"Academic web presence and research platform of Dr. Watcharin Sarachai — Information Technology, Maejo University.","url":"https://sarachai.com/api/x402/chat?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"messages":{"type":"array","items":{"type":"object","required":["role","content"],"properties":{"role":{"enum":["system","user","assistant"],"type":"string"},"content":{"type":"string","maxLength":4000,"minLength":1}},"additionalProperties":false},"maxItems":40,"minItems":1}}},"responseSchema":{"body":{"id":"clx1a2b3c4d5e6f7g8h9","url":"https://sarachai.com/api/images/sunset-photo.jpg","slug":"sunset-photo","width":1920,"height":1080,"fileName":"1699999999-sunset-photo.jpg","fileSize":245678,"mimeType":"image/jpeg"},"type":"http","bodyType":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_p8BZ2vBZlZIes532IlQ9-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Sends a conversational message thread to the Sarachai AI chat endpoint and returns an AI-generated response, hosted on the academic domain of Dr. Watcharin Sarachai at Maejo University.","exampleAgentPrompt":"Can you send this conversation thread — with my message asking about machine learning fundamentals — to the Sarachai chat API and get me a response?","exampleUseCases":[{"title":"Academic Q&A assistant for students","prompt":"I'm studying information technology and need a quick explanation of database normalization — can you send my question to the Sarachai chat API and get me an answer?"},{"title":"Multi-turn research dialogue","prompt":"I want to have a back-and-forth conversation about neural network architectures — send my previous three messages and the latest follow-up question to the Sarachai chat endpoint and get the next response."},{"title":"Quick factual lookup via AI chat","prompt":"Ask the Sarachai AI chat: 'What are the main differences between supervised and unsupervised learning?' and show me what it says."}],"resultDescription":"Returns a JSON object containing a response id, a URL, a slug, width, height, fileName, fileSize, and mimeType — though the endpoint is a chat API, the documented response schema appears to describe an image upload response, suggesting possible schema mismatch; agents should expect a conversational text reply wrapped in a JSON body.","failureModes":["Payment not provided or insufficient USDC results in HTTP 402 error","Messages array is empty or missing required role/content fields causes validation failure","Content exceeds 4000 character limit per message triggers rejection","More than 40 messages in the array may be refused","Service unavailability from the academic hosting domain"],"whenToPreferThis":"Choose this endpoint when you need a low-cost ($0.01 USDC per call), x402-payment-gated conversational AI chat capability and are comfortable with an academically-hosted service. It is suitable for lightweight chat interactions, especially in x402-protocol-aware agent workflows where micropayment per call is acceptable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T06:39:53.367Z","isFirstParty":false,"canonicalSlug":"sarachai-chat-api-4f818aef"}