{"uid":"cap_C4nxFwIADdwCmLLs6qNTB","slug":"creator-desk-starts-with-utility-c964d113","name":"Creator Desk Starts-With Utility","description":"Machine-callable x402-paid utilities for autonomous agents.","url":"https://creator-desk-x402-isolated.onrender.com/v1/utility/starts-with?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"value":{},"options":{"type":"object"}}},"responseSchema":{"type":"json","example":{"result":"example","operation":"starts_with"}},"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__4dOekeWX0eMzceDN9w0A","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":"Checks whether a given value starts with a specified prefix, returning the boolean result via a paid x402 micro-transaction.","exampleAgentPrompt":"Check if the string 'https://example.com/path' starts with 'https://' and tell me the result.","exampleUseCases":[{"title":"Validate secure URL prefix","prompt":"I need to verify that this URL 'http://my-site.com' starts with 'https://' — can you check that for me?"},{"title":"Confirm product ID format","prompt":"Check whether the product code 'SKU-20349-X' starts with 'SKU-' so I know it's formatted correctly."},{"title":"Validate phone number country code","prompt":"Does the phone number '+447911123456' start with '+44'? I need to know if it's a UK number."}],"resultDescription":"Returns a JSON object with a 'result' field (boolean or string indicating true/false) and an 'operation' field set to 'starts_with', confirming which utility was applied.","failureModes":["Missing 'value' field in request body returns an error","Malformed JSON body causes a 400-level parse error","Payment failure or insufficient USDC balance returns a 402 Payment Required","Passing a non-string value type may produce unexpected results if schema coercion is not applied","Network timeout on the Render.com hosted service during cold start"],"whenToPreferThis":"Use this endpoint when an AI agent needs a lightweight, paid, verifiable string-prefix check as part of an automated pipeline — particularly when operating within an x402 micro-payment ecosystem and needing a simple deterministic utility without standing up custom code.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:41:02.791Z","isFirstParty":false,"canonicalSlug":"creator-desk-starts-with-utility-c964d113"}