{"id":"dfd21879-8055-4e32-8132-3391e2eef581","shortId":"ZAw7nj","kind":"x402","title":"Pay for Virtuals Protocol ACP job budgets via x402 micropayments on Base Sepolia.","tagline":"Pay for Virtuals Protocol ACP job budgets via x402 micropayments on Base Sepolia.","description":"This endpoint is an x402-enabled payment service operated by Virtuals Protocol for funding ACP (Agent Communication Protocol) jobs. It accepts both GET and POST requests at `/acp-budget` and processes micropayments denominated in USDC on the Base Sepolia testnet.\n\nThe default cost per call is $0.001 (1000 units of the USDC asset on Base Sepolia), but callers can specify a custom budget amount via the optional `X-Budget` HTTP header (e.g., `$0.01`). Payment is made through the standard x402 flow: the endpoint returns a 402 challenge with payment details, and the caller includes an `X-PAYMENT` header with a valid payment proof to complete the transaction.\n\nThis is a development/testnet service (indicated by the `dev-` prefix and Base Sepolia network). The response schema is a generic JSON object (`additionalProperties: true`), and no detailed output schema is documented. The service is built on FastAPI and is currently operational according to its health check page.","tags":[],"capabilities":["x402-payment","acp-job-budget","micropayment","usdc-base-sepolia","dynamic-pricing-header","agent-communication-protocol"],"categories":["payments","agent-infra"],"synonyms":["ACP budget","Virtuals Protocol payment","agent job funding","x402 micropayment","ACP job payment","USDC testnet payment","agent communication protocol budget"],"warnings":["This is a development/testnet endpoint (Base Sepolia) — not suitable for production use with real funds.","No output schema is documented; the response is a generic JSON object.","No request body schema is provided; only an optional X-Budget header is documented.","Limited documentation — no detailed API reference, examples, or changelog available."],"endpointUrl":"http://dev-acp-x402.virtuals.io/acp-budget","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x8Db6B1c839Fc8f6bd35777E194677B67b4D51928","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"http://dev-acp-x402.virtuals.io/acp-budget","description":"acp job budget ($0.001)","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true,"headerFields":{"X-Budget":{"type":"string","example":"$0.01","required":false,"description":"Optional budget amount in USD (e.g., $0.01). If not provided, defaults to $0.001"}}},"output":null},"maxAmountRequired":"1000","maxTimeoutSeconds":300}]},"qualityScore":"0.500","qualityRationale":"The endpoint is live with a valid 402 challenge, OpenAPI spec, and basic landing page docs. However, there is no request body schema, no documented output schema, no example responses, and the service is on a testnet. The description and purpose are only partially 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'0.001':73 '0.01':100 '1000':74 '402':113 'ACP budget' 'ACP job payment' 'USDC testnet payment' 'Virtuals Protocol payment' 'accept':48 'accord':177 'acp':5,18,42 'acp-job-budget' 'additionalproperti':158 'agent':43 'agent communication protocol budget' 'agent job funding' 'agent-communication-protocol' 'amount':90 'asset':79 'base':12,25,64,81,147 'budget':7,20,89,96 'built':170 'call':71 'caller':84,120 'challeng':114 'check':181 'communic':44 'complet':133 'cost':69 'current':175 'custom':88 'default':68 'denomin':59 'detail':117,162 'dev':144 'development/testnet':139 'document':166 'dynamic-pricing-header' 'e.g':99 'enabl':33 'endpoint':28,110 'fastapi':172 'flow':108 'fund':41 'generic':155 'get':50 'header':98,126 'health':180 'http':97 'includ':121 'indic':141 'job':6,19,46 'json':156 'made':103 'micropay':10,23,58 'micropayment' 'network':149 'object':157 'oper':36,176 'option':93 'output':163 'page':182 'pay':1,14 'payment':34,101,116,125,130 'per':70 'post':52 'prefix':145 'process':57 'proof':131 'protocol':4,17,39,45 'request':53 'respons':151 'return':111 'schema':152,164 'sepolia':13,26,65,82,148 'servic':35,140,168 'specifi':86 'standard':106 'testnet':66 'transact':135 'true':159 'unit':75 'usdc':61,78 'usdc-base-sepolia' 'valid':129 'via':8,21,91 'virtual':3,16,38 'x':95,124 'x-budget':94 'x-payment':123 'x402':9,22,32,107 'x402 micropayment' 'x402-enabled':31 'x402-payment'","prices":[{"id":"9d704d16-0881-4a4c-ab91-7224ea052fce","listingId":"dfd21879-8055-4e32-8132-3391e2eef581","amountUsd":null,"unit":"per_call","nativeCurrency":"USDC","nativeAmount":"1000","chain":"base-sepolia","payTo":"0x8Db6B1c839Fc8f6bd35777E194677B67b4D51928","paymentMethod":"x402-usdc","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","extra":{"name":"USDC","version":"2"},"payTo":"0x8Db6B1c839Fc8f6bd35777E194677B67b4D51928","scheme":"exact","network":"base-sepolia","mimeType":"application/json","resource":"http://dev-acp-x402.virtuals.io/acp-budget","description":"acp job budget ($0.001)","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true,"headerFields":{"X-Budget":{"type":"string","example":"$0.01","required":false,"description":"Optional budget amount in USD (e.g., $0.01). If not provided, defaults to $0.001"}}},"output":null},"maxAmountRequired":"1000","maxTimeoutSeconds":300}],"asset_contract":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","max_timeout_seconds":300},"createdAt":"2026-04-18T18:31:38.786Z"}],"sources":[{"listingId":"dfd21879-8055-4e32-8132-3391e2eef581","source":"x402_bazaar","sourceId":"http://dev-acp-x402.virtuals.io/acp-budget","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:31:38.786Z","lastSeenAt":"2026-04-22T02:30:12.289Z"}],"details":{"listingId":"dfd21879-8055-4e32-8132-3391e2eef581","quickStartSnippet":"curl -X POST http://dev-acp-x402.virtuals.io/acp-budget \\\n  -H \"X-PAYMENT: <your-x402-payment-proof>\" \\\n  -H \"X-Budget: $0.01\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true,"headerFields":{"X-Budget":{"type":"string","example":"$0.01","required":false,"description":"Optional budget amount in USD (e.g., $0.01). If not provided, defaults to $0.001"}}},"output":null},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting payment in USDC on Base Sepolia with maxAmountRequired of 1000","source_url":"http://dev-acp-x402.virtuals.io/acp-budget"},{"claim":"The service is described as an x402 payment service for Virtuals Protocol ACP jobs and is operational","source_url":"http://dev-acp-x402.virtuals.io"},{"claim":"The /acp-budget endpoint supports both GET and POST and accepts an optional X-Budget header for dynamic pricing","source_url":"http://dev-acp-x402.virtuals.io/docs"},{"claim":"The OpenAPI spec shows the response schema as a generic object with additionalProperties: true","source_url":"http://dev-acp-x402.virtuals.io/openapi.json"}],"useCases":["Funding ACP jobs for autonomous agent workflows on Virtuals Protocol","Making micropayments to initiate or budget agent tasks","Testing x402 payment flows on Base Sepolia testnet","Programmatically allocating budgets for multi-agent coordination"],"bestFor":["Developers building on Virtuals Protocol's agent ecosystem","Testing x402 payment integrations on a testnet","Autonomous agents that need to fund ACP job budgets"],"notFor":["Production/mainnet payment processing (this is a dev/testnet endpoint)","Use cases unrelated to Virtuals Protocol ACP jobs","Users needing detailed structured response data (output schema is unspecified)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:05.999Z"},"updatedAt":"2026-04-22T02:30:12.289Z"}}