{"uid":"cap_73LDK-RWO4SGJingXOkrB","slug":"tariffwatch-hts-changes-feed-5969ee60","name":"TariffWatch HTS Changes Feed","description":"US import duty / tariff RATE CHANGES: new HTS duty rates, Section 301/232/IEEPA tariff actions, and Federal Register tariff notices across the Harmonized Tariff Schedule since a timestamp, each scored 1-10 for impact. Answers \"did the import duty rate for my HTS code change?\" Scope to your codes with ?hts=<prefix> (e.g. ?hts=6109 for cotton apparel).","url":"https://oracles-production.up.railway.app/v1/tariffwatch/changes","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"},"queryParams":{"type":"object","properties":{"limit":{"type":"integer","maximum":500,"minimum":1},"since":{"type":"string","format":"date-time","description":"Only changes detected after this ISO-8601 instant"},"min_significance":{"type":"integer","maximum":10,"minimum":1,"description":"Keep only changes scored at least this"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"count":{"type":"integer"},"source":{"type":"string"},"changes":{"type":"array","items":{"type":"object","properties":{"type":{"type":"string"},"title":{"type":"string"},"detail":{"type":"object"},"summary":{"type":"string"},"entityId":{"type":"string"},"sourceUrl":{"type":["string","null"],"description":"Primary-source link for verification"},"detectedAt":{"type":"string","format":"date-time"},"significance":{"type":"integer","maximum":10,"minimum":1},"effectiveDate":{"type":["string","null"]}}}}}}}}}},"responseSchema":{"type":"json","example":{"count":1,"source":"tariffwatch","changes":[{"type":"rate_change","title":"Duty rate changed for HTS 6109.10.00","entityId":"hts:6109.10.00","sourceUrl":"https://hts.usitc.gov/search?query=6109.10.00","significance":7}]}},"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_H-ZKrq3wZ0ikhJgk5WeaO","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":"Returns scored HTS duty-rate changes, HTS schedule revisions, and Federal Register tariff actions, optionally filtered by HTS code prefix.","exampleAgentPrompt":"Show me all tariff changes for HTS codes starting with 6109 since 2025-01-01T00:00:00Z, and only include ones with a significance score of at least 7.","exampleUseCases":null,"resultDescription":"A JSON object with a count, a source label, and an array of change records. Each record includes: entity ID, change type, title, summary, structured detail object, detected timestamp, effective date, significance score (1-10), and a primary-source URL for verification.","failureModes":["Invalid since parameter format returns 400 (must be ISO-8601)","min_significance out of range 1-10 returns 400","limit exceeds 500 returns 400","No matching changes returns empty changes array with count 0","Payment not provided or insufficient returns 402","HTS prefix not matching any known codes returns empty result silently"],"whenToPreferThis":"Use this endpoint when you need machine-readable, scored tariff change events across the entire HTS schedule, especially when you want to filter by specific HTS code prefixes or recency. Prefer this over Federal Register full-text search when you need structured duty-rate and HTS-revision change records with significance scoring rather than raw regulatory document text.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:55:40.255Z","isFirstParty":false}