{"uid":"cap_xN3E5SQqX78GYl60MXRqG","slug":"2s-weather-alert-watcher-8a1be933","name":"2s Weather Alert Watcher","description":"The (most) everything API: 575+ pay-per-call endpoints for AI agents — ground-truth data, a full AI gateway, and agent infrastructure (storage, queues, watchers). USDC via x402, no signup, no API keys, and upto billing: pay actual usage, not the quote.","url":"https://2s.io/api/watchers/weather-alert","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"area":{"type":"string","description":"US state/territory code, e.g. CA, TX, FL."},"label":{"type":"string","maxLength":64,"description":"Optional free-text tag."},"payload":{"type":"object","description":"Arbitrary JSON echoed back in every callback.","additionalProperties":{}},"maxFires":{"type":"integer","maximum":1000,"minimum":1,"description":"Stop after this many alerts (default 25)."},"severity":{"enum":["Minor","Moderate","Severe","Extreme"],"type":"string","description":"Optional: only fire on alerts of this severity."},"callbackUrl":{"type":"string","maxLength":2048,"description":"Signed event POSTed here (verify X-2s-Signature). Any http(s) URL."},"expiresInSeconds":{"type":"integer","maximum":7776000,"minimum":60,"description":"Active window in seconds (default 30d, max 90d)."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.125","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":"$0.125/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.125","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.125","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_PiLkFmAAcXxxDzY1i3YF1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.125","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Registers a persistent webhook watcher that fires a signed callback whenever a matching NWS weather alert is issued for a US state or territory.","exampleAgentPrompt":"Set up a weather alert watcher for Texas that calls my endpoint at https://hooks.myapp.com/weather with a signed POST whenever a Severe or Extreme NWS alert fires — stop after 50 alerts and keep it active for 30 days.","exampleUseCases":null,"resultDescription":"Returns a JSON object confirming the watcher was created, with ok: true, the registered watcher details in items[], the total count, and source metadata (provider, URL, license). After registration, signed alert events are POSTed to the callbackUrl each time a matching NWS weather alert fires for the specified area.","failureModes":["Invalid or unrecognized US state/territory code returns a 400 error","callbackUrl is unreachable or malformed — watcher may be created but callbacks will silently fail","severity enum value not matching one of Minor/Moderate/Severe/Extreme causes a validation error","expiresInSeconds outside 60–7776000 range returns a 400","maxFires outside 1–1000 range returns a 400","Payment not received (x402) results in a 402 Payment Required response","Callback signature not verified by recipient leads to missed or rejected events"],"whenToPreferThis":"Use this endpoint when you need ongoing, real-time monitoring of NWS weather alerts for a US state rather than a one-time query. It is ideal for automating downstream workflows (e.g. emergency notifications, logistics re-routing, app push alerts) that need to react immediately when NOAA issues new weather warnings. Prefer this over polling weather endpoints when you want push-based delivery with a signed callback, configurable severity filters, and a defined expiry window.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:48:12.580Z","isFirstParty":false}