{"id":"0e5d2c29-ed30-403b-a3d5-7b7a57d5a7c0","shortId":"6ZfQ3U","kind":"x402","title":"AI-powered digital asset insights via chat, paid per query with x402 USDC micropayments.","tagline":"AI-powered digital asset insights via chat, paid per query with x402 USDC micropayments.","description":"Ask Surf Chat is an x402-enabled endpoint that provides AI-generated intelligence about digital assets (cryptocurrency) through a simple question-and-answer interface. You send a natural-language query about crypto topics and receive an AI-composed answer. The endpoint is part of the Ask Surf platform, which positions itself as an AI intelligence platform for digital assets delivering insights through chat.\n\nThe server exposes two main paid tools: `ask_surf_chat` (synchronous, non-streaming response) and `ask_surf_research` (asynchronous job submission with a free status-polling endpoint). This specific listing covers the `ask_surf_chat` tool priced at $0.20 USDC per request. Payment is handled via the x402 protocol. The same chat tool is also available on Solana (USDC) and XRPL (XRP) payment rails at parallel endpoint paths.\n\nThe request schema is minimal: a JSON body with a single required field `user_query` (string). The server assembles the appropriate prompt internally. The OpenAPI spec (v3.1) is fully published at `/openapi.json`. Note that during probing the endpoint returned HTTP 422 (validation error) rather than the expected 402 payment challenge, which may indicate the x402 payment middleware was not triggered without a proper payment header, or the endpoint requires a body even to issue the challenge. The root landing page redirects to asksurf.ai and is live (HTTP 200).","tags":[],"capabilities":["crypto-intelligence","ai-chat","digital-asset-analysis","x402-payment","usdc-micropayment","solana-payment","xrpl-payment","async-research-jobs","openapi-3.1"],"categories":["llm","crypto","search"],"synonyms":["crypto AI chat","digital asset intelligence","cryptocurrency Q&A","ask surf","crypto research API","blockchain insights","x402 crypto","token analysis chat"],"warnings":["Endpoint returned HTTP 422 instead of the expected 402 payment challenge during probing — x402 payment flow could not be verified","Response schema is empty/unspecified in the OpenAPI spec; actual response format is unknown","No example responses or detailed documentation available beyond auto-generated docs"],"endpointUrl":"https://x402.asksurf.ai/x402/tools/ask_surf_chat","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x4e2ef8df36a74b168333e92686018c3b3fb2e3e7","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402.asksurf.ai/x402/tools/ask_surf_chat","description":"Payment for Ask Surf chat ($0.20 USDC)","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"user_query":{"type":"string","required":true,"description":"Single user query"}},"headerFields":{"X-PAYMENT":{"type":"string","required":false,"description":"Base64-encoded JSON PaymentPayload; automatically filled by x402scan"}}},"output":{"model":"string","content":"string","reasoning":"string|null","raw_response":"object|null"}},"maxAmountRequired":"200000","maxTimeoutSeconds":300}]},"qualityScore":"0.520","qualityRationale":"Full OpenAPI 3.1 schema is published with clear request models, and the root page is live. However, the endpoint did not return a 402 challenge during probing (returned 422 instead), response schema is unspecified, no example responses are available, and there is no dedicated documentation beyond the auto-generated Swagger page. Pricing is stated in the OpenAPI description but not in a structured pricing 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'0.20':139 '200':256 '402':216 '422':209 'ai':2,17,43,72,89 'ai-chat' 'ai-compos':71 'ai-gener':42 'ai-pow':1,16 'also':155 'answer':56,74 'appropri':189 'ask':31,81,106,115,133 'ask surf' 'asksurf.ai':251 'assembl':187 'asset':5,20,48,94 'async-research-jobs' 'asynchron':118 'avail':156 'blockchain insights' 'bodi':176,239 'challeng':218,244 'chat':8,23,33,98,108,135,152 'compos':73 'cover':131 'crypto':66 'crypto AI chat' 'crypto research API' 'crypto-intelligence' 'cryptocurr':49 'cryptocurrency Q&A' 'deliv':95 'digit':4,19,47,93 'digital asset intelligence' 'digital-asset-analysis' 'enabl':38 'endpoint':39,76,127,167,206,236 'error':211 'even':240 'expect':215 'expos':101 'field':181 'free':123 'fulli':197 'generat':44 'handl':145 'header':233 'http':208,255 'indic':221 'insight':6,21,96 'intellig':45,90 'interfac':57 'intern':191 'issu':242 'job':119 'json':175 'land':247 'languag':63 'list':130 'live':254 'main':103 'may':220 'micropay':15,30 'middlewar':225 'minim':173 'natur':62 'natural-languag':61 'non':111 'non-stream':110 'note':201 'openapi':193 'openapi-3.1' 'page':248 'paid':9,24,104 'parallel':166 'part':78 'path':168 'payment':143,163,217,224,232 'per':10,25,141 'platform':83,91 'poll':126 'posit':85 'power':3,18 'price':137 'probe':204 'prompt':190 'proper':231 'protocol':149 'provid':41 'publish':198 'queri':11,26,64,183 'question':54 'question-and-answ':53 'rail':164 'rather':212 'receiv':69 'redirect':249 'request':142,170 'requir':180,237 'research':117 'respons':113 'return':207 'root':246 'schema':171 'send':59 'server':100,186 'simpl':52 'singl':179 'solana':158 'solana-payment' 'spec':194 'specif':129 'status':125 'status-pol':124 'stream':112 'string':184 'submiss':120 'surf':32,82,107,116,134 'synchron':109 'token analysis chat' 'tool':105,136,153 'topic':67 'trigger':228 'two':102 'usdc':14,29,140,159 'usdc-micropayment' 'user':182 'v3.1':195 'valid':210 'via':7,22,146 'without':229 'x402':13,28,37,148,223 'x402 crypto' 'x402-enabled':36 'x402-payment' 'xrp':162 'xrpl':161 'xrpl-payment'","prices":[{"id":"5dbe3e20-5ae6-4d26-9e25-d7fb743bf4e9","listingId":"0e5d2c29-ed30-403b-a3d5-7b7a57d5a7c0","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"200000","chain":"base","payTo":"0x4e2ef8df36a74b168333e92686018c3b3fb2e3e7","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x4e2ef8df36a74b168333e92686018c3b3fb2e3e7","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://x402.asksurf.ai/x402/tools/ask_surf_chat","description":"Payment for Ask Surf chat ($0.20 USDC)","outputSchema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"user_query":{"type":"string","required":true,"description":"Single user query"}},"headerFields":{"X-PAYMENT":{"type":"string","required":false,"description":"Base64-encoded JSON PaymentPayload; automatically filled by x402scan"}}},"output":{"model":"string","content":"string","reasoning":"string|null","raw_response":"object|null"}},"maxAmountRequired":"200000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:31:33.966Z"}],"sources":[{"listingId":"0e5d2c29-ed30-403b-a3d5-7b7a57d5a7c0","source":"x402_bazaar","sourceId":"https://x402.asksurf.ai/x402/tools/ask_surf_chat","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:33.966Z","lastSeenAt":"2026-04-22T12:02:47.425Z"}],"details":{"listingId":"0e5d2c29-ed30-403b-a3d5-7b7a57d5a7c0","quickStartSnippet":"curl -X POST https://x402.asksurf.ai/x402/tools/ask_surf_chat \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-Payment: <x402-payment-token>\" \\\n  -d '{\"user_query\": \"What is the current sentiment around Ethereum?\"}'","exampleRequest":{"user_query":"What is the current sentiment around Ethereum?"},"exampleResponse":null,"schema":{"input":{"type":"http","method":"POST","bodyType":"json","bodyFields":{"user_query":{"type":"string","required":true,"description":"Single user query"}},"headerFields":{"X-PAYMENT":{"type":"string","required":false,"description":"Base64-encoded JSON PaymentPayload; automatically filled by x402scan"}}},"output":{"model":"string","content":"string","reasoning":"string|null","raw_response":"object|null"}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Surf is an AI intelligence platform for digital assets that delivers accurate, trusted insights through a simple chat interface.","source_url":"https://x402.asksurf.ai/docs"},{"claim":"ask_surf_chat is priced at $0.20 USDC per request","source_url":"https://x402.asksurf.ai/docs"},{"claim":"ask_surf_chat is a non-streaming endpoint; the server assembles OpenAI-style messages from user_query","source_url":"https://x402.asksurf.ai/docs"},{"claim":"ask_surf_research_status is a FREE endpoint (no x402 payment required)","source_url":"https://x402.asksurf.ai/docs"},{"claim":"The same tools are available via Solana USDC and XRPL XRP payment rails","source_url":"https://x402.asksurf.ai/docs"},{"claim":"AskSurfQueryRequest requires a single field user_query of type string","source_url":"https://x402.asksurf.ai/docs"}],"useCases":["Ask natural-language questions about cryptocurrency projects, tokens, or market events and get AI-generated answers","Integrate crypto intelligence into trading bots or portfolio dashboards via a pay-per-query API","Run deeper async research jobs on digital asset topics and poll for results","Build agent workflows that pay per query for on-demand crypto market insights"],"bestFor":["AI agents needing on-demand crypto market intelligence","Developers building crypto research tools with pay-per-use economics","x402-native applications that want micropayment-gated AI chat"],"notFor":["Non-crypto general-purpose AI chat (this is specialized for digital assets)","High-frequency bulk queries where $0.20 per call would be cost-prohibitive","Users who need streaming responses (this endpoint is non-streaming)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:06.863Z"},"updatedAt":"2026-04-22T12:02:47.425Z"}}