{"uid":"cap_p-TQj2toaPvTSbdOowyS3","slug":"holidays-business-day-calculator-api-7b51d2d8","name":"Holidays & Business Day Calculator API","description":"Public holidays and business-day calculator for agents, ~120 countries: holiday lists, is-this-a-business-day, and add N business days. Paid per call via x402 (USDC on Base).","url":"https://holidays.x402utils.workers.dev/v1/countries?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"count":120}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_r1EimX4Z_Tkh33efAp-9X","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of all supported countries (~120) for querying public holidays and business-day calculations","exampleAgentPrompt":"Can you show me all the countries supported by the holidays calculator so I can check if it covers the markets I need?","exampleUseCases":[{"title":"Check coverage before integrating","prompt":"Before I build my payroll scheduler, can you list all the countries the holidays API supports so I know if Germany, Japan, and Brazil are included?"},{"title":"Discover jurisdictions for compliance tool","prompt":"I need to build a compliance calendar for our global offices — can you pull the full list of countries the holidays service covers so I can see if all our locations are there?"},{"title":"Validate country support for travel app","prompt":"We're adding business-day deadline calculations to our travel app — can you fetch all supported countries from the holidays API so I can cross-check them against our list of destination markets?"}],"resultDescription":"A JSON object containing the count of supported countries (e.g. {\"count\": 120}) and likely the list of country codes or names available for holiday and business-day queries on the sibling endpoints.","failureModes":["Network or server error returning 5xx if the worker is unavailable","402 Payment Required if x402 payment header is missing or invalid USDC payment not completed","Rate limiting or quota exhaustion returning 429","Empty or malformed JSON if the worker deployment is broken"],"whenToPreferThis":"Use this endpoint first when you need to discover which countries are supported before making holiday or business-day queries. It acts as a directory/catalog endpoint — call it to validate country coverage before committing to integration or before querying holiday data for a specific country.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T00:32:19.029Z","isFirstParty":false,"canonicalSlug":"holidays-business-day-calculator-api-7b51d2d8"}