{"uid":"cap_QGEQ_1p7R_mvM1yYJfp1L","slug":"textkit-describe-date-5b360161","name":"TextKit Describe Date","description":"General-purpose text, Unicode and date utilities for AI agents: homoglyph folding and spoofed-domain detection, Unicode script detection, NFC/NFD normalization, grapheme counting, date description (weekday, ISO week, quarter, leap year), business-day counting, slugify, FNV-1a hashing, Shannon entropy, string format detection (uuid, email, url, ipv4, jwt, iban), byte-encoding detection and human-readable byte sizes. Pay per request in USDC on Base via x402 - no signup, no API key, no KYC.","url":"https://textkit.johnaio281.workers.dev/api/tk/describe-date?utm_source=zero.xyz","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","required":["year","month","day"],"properties":{"day":{"type":"integer","maximum":31,"minimum":1},"year":{"type":"integer"},"month":{"type":"integer","maximum":12,"minimum":1}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"iso":"2026-10-21","valid":true,"quarter":4,"dayOfWeek":"Wednesday","weekOfYear":43}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_m7yBS0YPP7WuepPrEXsNk","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns structured calendar metadata for a given date: weekday name, ISO week number, quarter, and leap-year/validity information.","exampleAgentPrompt":"What day of the week, ISO week number, and quarter does October 21, 2026 fall on?","exampleUseCases":[{"title":"Deadline weekday check","prompt":"My project deadline is March 15, 2025 — what day of the week is that, and which quarter does it land in?"},{"title":"Event calendar labeling","prompt":"I need the full calendar breakdown for December 25, 2024 — weekday, ISO week number, and quarter — so I can label it correctly in our scheduling system."},{"title":"Quarterly reporting date lookup","prompt":"Can you tell me which quarter and ISO week number September 30, 2025 belongs to, and confirm it's a valid calendar date?"}],"resultDescription":"A JSON object containing the ISO-formatted date string, a boolean indicating whether the date is valid, the calendar quarter (1–4), the full weekday name (e.g. 'Wednesday'), and the ISO week-of-year number (e.g. 43).","failureModes":["Invalid date values (e.g. month=13 or day=32) may return valid:false or an error response","Missing required query parameters (year, month, or day) will result in a 400-level error","Non-integer or out-of-range values may cause validation failures","Payment failure via x402 will block the request before it reaches the compute logic"],"whenToPreferThis":"Choose this endpoint when you need lightweight, structured calendar metadata (weekday, ISO week, quarter) for a single date without standing up date-parsing infrastructure or managing API keys. It is ideal for AI agents that need to enrich date strings in pipelines, label events in scheduling workflows, or validate user-supplied dates, and where paying micro-amounts per call in USDC on Base is acceptable over a subscription.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T12:40:57.164Z","isFirstParty":false,"canonicalSlug":"textkit-describe-date-5b360161"}