{"uid":"cap_rbp1svjqp0NIPa-AwJaDU","slug":"pennyapi-regulatory-watch-domain-rdap-delta-check-c5c3bb7a","name":"PennyAPI Regulatory Watch – Domain RDAP Delta Check","description":"Monitor Texas childcare regulatory records and receive email alerts when important HHSC information changes.","url":"https://pennyregwatch.com/v1/domain/delta","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["domain"],"properties":{"limit":{"type":"integer","maximum":100,"minimum":1},"domain":{"type":"string","description":"Domain name to refresh and compare against PennyAPI-observed RDAP history, e.g. example.com"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"domain":"example.com","events":[],"source":{"protocol":"RDAP"},"status":"NO_CHANGE","last_checked_at":"2026-09-06T16:00:00Z","first_observed_at":"2026-09-06T16:00:00Z","event_count_returned":0}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1ne9oMd8BYIMwZZMhyXz1","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches and compares current RDAP registration data for a domain against PennyAPI's historical baseline, returning any detected changes or confirming no change.","exampleAgentPrompt":"Check if the RDAP registration record for example.com has changed since you last looked at it — I want to know if anything like the registrar, nameservers, or ownership has been updated.","exampleUseCases":[{"title":"Competitor domain transfer alert","prompt":"Keep an eye on rival-brand.com for me — let me know the moment its RDAP registration data changes, like if it gets transferred to a new registrar or the nameservers flip."},{"title":"Brand protection domain watch","prompt":"Has mybrand.com had any changes to its domain registration record recently? Check against your last known snapshot and tell me if anything looks different."},{"title":"Expired domain opportunity tracking","prompt":"I'm watching acme-expired.com for signs it's been picked up by a new owner — can you check the RDAP delta and tell me if the registration data has changed from what you had before?"}],"resultDescription":"Returns a JSON object indicating whether the domain's RDAP data has changed ('NO_CHANGE' or a diff), a list of change events (if any), the source protocol (RDAP), timestamps for when the domain was first observed and last checked, and the count of events returned.","failureModes":["Domain not found in RDAP — returns empty events with NO_CHANGE status","Invalid domain format — likely 400 error or empty result","Domain not yet tracked by PennyAPI — first_observed_at equals last_checked_at with no events","RDAP upstream unavailability — may return stale or error response","Limit parameter out of range (must be 1–100) — validation error"],"whenToPreferThis":"Choose this endpoint when you need lightweight, pay-per-call domain registration change detection using RDAP (not legacy WHOIS) and want a structured delta — i.e., only what changed — rather than a full raw RDAP dump. Ideal for agents polling many domains cheaply at $0.02 per call with no subscription required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:41:35.817Z","isFirstParty":false}