{"uid":"cap_CG12nqvS4OQtYHo8Dwvc7","slug":"hcad-parcel-protest-hearing-history-36fc5979","name":"HCAD Parcel Protest & Hearing History","description":"Every ARB protest and hearing for one Harris County parcel, across all tax years, including the value before the protest and the value after it. Party names are not included. Get the acct from GET /search?addr=<street>.","url":"https://hcad-api.canvas-cart.workers.dev/parcel/:acct/protests","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"],"type":"string"},"pathParams":{"type":"object","required":["acct"],"properties":{"acct":{"type":"string","description":"13-digit HCAD account number"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YapqoTujx_8tGmN7Litur","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns all ARB (Appraisal Review Board) protests and hearings for a specific Harris County parcel across all tax years, including pre- and post-protest values.","exampleAgentPrompt":"Pull up all the ARB protest and hearing records for Harris County parcel account 0421430000098 — I want to see every year it was protested, what the value was before and after each protest.","exampleUseCases":[{"title":"Track protest savings over time","prompt":"For HCAD account 1156890010017, show me every year the property was taken to an ARB hearing and how much the appraised value dropped after each protest."},{"title":"Pre-purchase protest due diligence","prompt":"I'm considering buying a Houston property with HCAD account number 0652540040004 — can you pull its full protest history so I can see whether the owners have successfully challenged the appraisal and by how much?"},{"title":"Verify protest outcome for current year","prompt":"Did the ARB hearing for my Harris County property account 0320850000232 actually result in a lower value this year, and what was the assessed value before versus after the protest?"}],"resultDescription":"A list of all ARB protest and hearing records for the specified parcel, organized by tax year. Each record includes the assessed or appraised value before the protest was filed and the value after the hearing outcome was determined. Party names are not included in the response.","failureModes":["Invalid or malformed 13-digit HCAD account number returns an error or empty result","Parcel with no protest history returns an empty array","Account number for a non-existent parcel returns a not-found error","Payment failure (x402) if USDC payment is not properly attached to the request"],"whenToPreferThis":"Use this endpoint when you need the full protest and hearing history for a specific Harris County parcel, including value changes resulting from ARB hearings across multiple tax years. Prefer this over the neighborhood-level protest statistics endpoint when you need parcel-specific data rather than aggregate neighborhood trends. Use the /search endpoint first to look up the account number from a street address if you don't already have the 13-digit HCAD account number.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:34:05.711Z","isFirstParty":false}