{"uid":"cap_ROgibF52-6sEZ-UaNVFY_","slug":"webcap-watch-top-up-2cd58a3b","name":"Webcap Watch Top-Up","description":"Screenshot any URL. Extract structured data. Monitor for changes. Developer API with pay-per-call pricing — no API keys, no accounts.","url":"https://webcap.shoutsid.fyi/v1/x402/watches/topup?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"runs":{"enum":[100],"type":"integer","description":"Pack size in runs (always 100)"},"watchId":{"type":"string","description":"The watch to top up"}}},"responseSchema":{"type":"json","example":{"credits":100,"watchId":"00000000-0000-4000-8000-000000000000","priceUsdcUnits":100000}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_VKRRAluL4LHh0EVngIMqT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Top up a website change-monitoring watch with 100 additional run credits via a pay-per-call USDC payment","exampleAgentPrompt":"Add 100 more monitoring runs to my webcap watch — the watch ID is 3b2e1a00-0000-4000-8000-abcdef123456.","exampleUseCases":[{"title":"Refilling expiring monitor credits","prompt":"My webcap watch 3b2e1a00-0000-4000-8000-abcdef123456 is almost out of runs — top it up with another 100 so the monitoring doesn't stop."},{"title":"Automating watch credit renewal","prompt":"Automatically add 100 more runs to webcap watch 9f8e7d00-0000-4000-8000-000000000001 every time the credit balance gets low."},{"title":"Recharging a price-tracking monitor","prompt":"I set up a price tracking watch on webcap with ID 00000000-0000-4000-8000-000000000099 and it's used up its runs — refill it with 100 more credits so it keeps checking for changes."}],"resultDescription":"Returns a JSON object confirming the watch ID, the number of credits added (100), and the price charged in USDC units (100000, i.e. 0.1 USDC).","failureModes":["Invalid or non-existent watchId returns an error","Payment failure or insufficient USDC balance prevents top-up","Pack size other than 100 is not accepted (only enum value is 100)","Network or service unavailability causes request to fail"],"whenToPreferThis":"Use this endpoint when you have an existing webcap watch that needs additional run credits to continue monitoring a URL for changes. This is specifically for replenishing an already-configured watch, not for creating a new one or taking a one-off screenshot.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T06:32:20.558Z","isFirstParty":false,"canonicalSlug":"webcap-watch-top-up-2cd58a3b"}