{"id":"f323ab5d-ec39-4ac4-8357-e9c323a3e633","shortId":"Z4wQjg","kind":"x402","title":"Chat-based CoinGecko crypto data agent accessible via x402 micropayment on Base Sepolia","tagline":"Chat-based CoinGecko crypto data agent accessible via x402 micropayment on Base Sepolia","description":"This endpoint exposes a CoinGecko-powered AI agent hosted on the Questflow platform, accessible via the x402 payment protocol. Callers send a natural-language message (e.g. \"What is the current price of Bitcoin?\") as a POST request with an X-PAYMENT header, and receive a text response from the agent that draws on CoinGecko's cryptocurrency data aggregation covering 17,000+ crypto assets across 1,000+ exchanges.\n\nThe agent runs on Questflow's infrastructure at a development API endpoint (api-dev.intra-tls2.dctx.link). Payment is required in USDC on the Base Sepolia testnet, with a maximum amount of 100,000 units (likely 0.10 USDC given 6-decimal USDC). The x402 challenge is live and returns a well-formed payment schema. The input/output contract is simple: POST a JSON body with an \"input\" string field and receive a JSON response with a \"response\" string field.\n\nNote that this is a development/testnet endpoint (Base Sepolia), not a production mainnet deployment. No OpenAPI spec, dedicated documentation, or usage examples beyond the x402 challenge schema were found. The underlying CoinGecko data capabilities are inferred from the agent description rather than verified through actual response content.","tags":[],"capabilities":["crypto-price-data","crypto-market-data","natural-language-query","x402-payment","usdc-base-sepolia","chat-agent","coingecko-integration"],"categories":["crypto","data","llm"],"synonyms":["CoinGecko agent","crypto price API","cryptocurrency data chatbot","Questflow CoinGecko","crypto market lookup","coin price checker","x402 crypto agent"],"warnings":["Development/testnet endpoint (Base Sepolia) — not suitable for production use","No OpenAPI specification or dedicated documentation available","Agent response quality and CoinGecko data freshness are unverified","Example response is illustrative and inferred, not captured from actual call","USDC asset address 0x036CbD53842c5426634e7929541eC2318f3dCF7e is the Base Sepolia testnet token"],"endpointUrl":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xEb22cc45bD3d3E52b32506e2d45B4beE9c78F470","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d","description":"CoinGecko is a comprehensive cryptocurrency data aggregator that provides users with real-time information on over 17,000 crypto assets across more than 1,000 exchanges, enabling informed trading and investment decisions. It offers a variety of tools, including price tracking, portfolio management, and educational resources, making it an essential platform for both novice and experienced crypto enthusiasts. | Powered by Questflow","outputSchema":{"input":{"type":"http","method":"POST","bodyFields":{"input":{"type":"string","required":true,"description":"Your message to the agent"}},"discoverable":true},"output":{"response":{"type":"string","required":true,"description":"Response from the agent"}}},"maxAmountRequired":"100000","maxTimeoutSeconds":1200}]},"qualityScore":"0.450","qualityRationale":"The x402 challenge is live and well-formed with a clear input/output schema, but this is a dev/testnet endpoint with no OpenAPI spec, no dedicated documentation, no usage examples, and no verified response content. The CoinGecko capabilities are inferred solely from the agent 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'000':92,97,128 '1':96 '100':127 '17':91 '6':134 'CoinGecko agent' 'Questflow CoinGecko' 'access':8,22,43 'across':95 'actual':218 'agent':7,21,37,81,100,212 'aggreg':89 'ai':36 'amount':125 'api':109 'api-dev.intra-tls2.dctx.link':111 'asset':94 'base':3,13,17,27,119,181 'beyond':196 'bitcoin':63 'bodi':158 'caller':49 'capabl':207 'challeng':139,199 'chat':2,16 'chat-agent' 'chat-bas':1,15 'coin price checker' 'coingecko':4,18,34,85,205 'coingecko-integration' 'coingecko-pow':33 'content':220 'contract':152 'cover':90 'crypto':5,19,93 'crypto market lookup' 'crypto price API' 'crypto-market-data' 'crypto-price-data' 'cryptocurr':87 'cryptocurrency data chatbot' 'current':60 'data':6,20,88,206 'decim':135 'dedic':191 'deploy':187 'descript':213 'develop':108 'development/testnet':179 'document':192 'draw':83 'e.g':56 'endpoint':30,110,180 'exampl':195 'exchang':98 'expos':31 'field':163,173 'form':147 'found':202 'given':133 'header':73 'host':38 'infer':209 'infrastructur':105 'input':161 'input/output':151 'json':157,167 'languag':54 'like':130 'live':141 'mainnet':186 'maximum':124 'messag':55 'micropay':11,25 'natur':53 'natural-languag':52 'natural-language-query' 'note':174 'openapi':189 'payment':47,72,112,148 'platform':42 'post':66,155 'power':35 'price':61 'product':185 'protocol':48 'questflow':41,103 'rather':214 'receiv':75,165 'request':67 'requir':114 'respons':78,168,171,219 'return':143 'run':101 'schema':149,200 'send':50 'sepolia':14,28,120,182 'simpl':154 'spec':190 'string':162,172 'testnet':121 'text':77 'under':204 'unit':129 'usag':194 'usdc':116,132,136 'usdc-base-sepolia' 'verifi':216 'via':9,23,44 'well':146 'well-form':145 'x':71 'x-payment':70 'x402':10,24,46,138,198 'x402 crypto agent' 'x402-payment'","prices":[{"id":"4b7ec5e0-bbb3-40ec-8609-4043591cd7b1","listingId":"f323ab5d-ec39-4ac4-8357-e9c323a3e633","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"100000","chain":"base-sepolia","payTo":"0xEb22cc45bD3d3E52b32506e2d45B4beE9c78F470","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0xEb22cc45bD3d3E52b32506e2d45B4beE9c78F470","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d","description":"CoinGecko is a comprehensive cryptocurrency data aggregator that provides users with real-time information on over 17,000 crypto assets across more than 1,000 exchanges, enabling informed trading and investment decisions. It offers a variety of tools, including price tracking, portfolio management, and educational resources, making it an essential platform for both novice and experienced crypto enthusiasts. | Powered by Questflow","outputSchema":{"input":{"type":"http","method":"POST","bodyFields":{"input":{"type":"string","required":true,"description":"Your message to the agent"}},"discoverable":true},"output":{"response":{"type":"string","required":true,"description":"Response from the agent"}}},"maxAmountRequired":"100000","maxTimeoutSeconds":1200}],"asset_contract":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","max_timeout_seconds":1200},"createdAt":"2026-04-18T18:31:04.012Z"}],"sources":[{"listingId":"f323ab5d-ec39-4ac4-8357-e9c323a3e633","source":"x402_bazaar","sourceId":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:04.012Z","lastSeenAt":"2026-04-22T02:30:10.741Z"}],"details":{"listingId":"f323ab5d-ec39-4ac4-8357-e9c323a3e633","quickStartSnippet":"curl -X POST https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{\"input\": \"What is the current price of Bitcoin?\"}'","exampleRequest":{"input":"What is the current price of Bitcoin?"},"exampleResponse":{"response":"The current price of Bitcoin (BTC) is $67,432.15 USD, with a 24h trading volume of $28.3B and a market cap of $1.33T."},"schema":{"input":{"type":"http","method":"POST","bodyFields":{"input":{"type":"string","required":true,"description":"Your message to the agent"}},"discoverable":true},"output":{"response":{"type":"string","required":true,"description":"Response from the agent"}}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"x402 challenge is live, returns 402 with payment schema requiring USDC on base-sepolia","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d"},{"claim":"Agent description states CoinGecko covers 17,000+ crypto assets across 1,000+ exchanges","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d"},{"claim":"Questflow platform hosts AI clone agents with their own wallets and tokens","source_url":"https://api-dev.intra-tls2.dctx.link"},{"claim":"maxAmountRequired is 100000 units of USDC with payTo address 0xEb22cc45bD3d3E52b32506e2d45B4beE9c78F470","source_url":"https://api-dev.intra-tls2.dctx.link/x402/agent/qrn:agent:68355af5edb8edd20e1c362d"}],"useCases":["Querying real-time cryptocurrency prices and market data via natural language","Getting exchange and trading volume information for specific tokens","Asking about market cap rankings and token metadata","Integrating crypto data lookups into autonomous agent workflows with micropayments"],"bestFor":["AI agents needing on-demand crypto market data via pay-per-query","Developers prototyping x402 payment flows on Base Sepolia testnet","Quick natural-language crypto data lookups without managing API keys"],"notFor":["Production trading systems requiring mainnet payment rails and SLAs","Bulk historical data downloads or streaming price feeds","Non-crypto data queries"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:16.653Z"},"updatedAt":"2026-04-22T02:30:10.741Z"}}