{"uid":"cap_VIEXJBl1uHKAsNdiUeYv2","slug":"losbeto-x402-watch-x402-endpoint-uptime-monitor-d8989345","name":"Losbeto x402-Watch — x402 Endpoint Uptime Monitor","description":"OpenAI-compatible LLM gateway at $0.005/call — change base_url, pay in USDC. Plus pay-per-call market data: multi-oracle price consensus, sentiment, forex, equities, commodities, Brazil macro (BCB/B3) and crypto. No API keys, no accounts. USDC on Base, Solana, Algorand and Polygon via x402.","url":"https://api.losbeto.xyz/x402-watch?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","properties":{"queryParams":{"type":"object","required":["url","webhook"],"properties":{"url":{"type":"string","description":"Public http/https URL to fetch (internal/private ranges refused)"},"webhook":{"type":"string","description":"webhook parameter"}}}}},"output":{"type":"object","properties":{"example":{"type":"object","description":"30-day watch on ANY x402 endpoint — yours or a competitor's. We measure it immediately (up/down, latency, HTTP status, correct 402 shape, current USDC price) and then re-check every 30 minutes for 30 days. State flips and price changes fire a JSON POST to your ?webhook=; pull current state anytime, free, via the returned watch_id capability URL. Built for x402 sellers monitoring..."}}}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_2ux-r1fpRhkJGSOfAaq8F","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Starts a 30-day uptime and price-change monitoring watch on any public x402 endpoint, firing webhook notifications on status or price changes and returning a capability URL for free polling.","exampleAgentPrompt":"Start a 30-day x402 watch on https://api.example.com/my-endpoint and send status or price-change alerts to https://my-server.com/webhook — I want to know immediately if it goes down or the USDC price changes.","exampleUseCases":[{"title":"Monitor your own x402 API launch","prompt":"I just published my x402 endpoint at https://api.mything.io/data — can you set up a 30-day watch on it and POST any downtime or 402-shape errors to https://alerts.mything.io/hook so I can catch problems right away?"},{"title":"Track a competitor's x402 pricing","prompt":"Watch https://api.rivalservice.xyz/llm for the next 30 days and notify my webhook at https://hooks.myapp.com/rival-watch whenever their USDC price changes — I want to know if they undercut us."},{"title":"Validate x402 compliance before going live","prompt":"Before I announce my new x402 endpoint at https://beta.myapi.dev/inference, can you run a watch on it for 30 days with webhook at https://ci.myapi.dev/x402-hook so I can confirm the 402 shape is always correct and latency stays low?"}],"resultDescription":"Returns a watch_id and a capability URL that can be polled for free at any time to get the current state (up/down, latency, HTTP status, 402 shape validity, current USDC price). Also fires a JSON POST to the provided webhook URL whenever the endpoint's state flips (up↔down) or its USDC price changes, for the full 30-day monitoring window.","failureModes":["Private or internal IP ranges are refused — the target URL must be publicly reachable","Missing required query parameters (url or webhook) return a 400 error","Invalid or non-https webhook URL may be rejected","Payment failure (insufficient USDC balance) returns a 402 and the watch is not started","Target endpoint returning non-x402 HTTP responses may be flagged as non-compliant rather than down"],"whenToPreferThis":"Choose this endpoint when you need continuous, automated monitoring of an x402-protocol endpoint — yours or a competitor's — with webhook-driven alerting on state changes or price shifts. Prefer it over generic uptime monitors because it understands the x402 402-payment shape, validates USDC pricing, and integrates natively with the x402 payment ecosystem. Ideal for x402 API operators who want reliability assurance or competitive intelligence on pricing changes without standing up their own monitoring infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:30:12.199Z","isFirstParty":false,"canonicalSlug":"losbeto-x402-watch-x402-endpoint-uptime-monitor-d8989345"}