{"uid":"cap_-8axAzx8nZOBmcTNYlbef","slug":"party-event-planner-event-timeline-calculator-ea80a833","name":"Party & Event Planner - Event Timeline Calculator","description":"Backwards timeline from the event start: milestones given as minutes before start become 12-hour clock times, earliest first.","url":"https://party-event-calc.x402tookit.com/event-timeline?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":["eventStart"],"properties":{"eventStart":{"type":"string","description":"When the event starts, like 6:00 PM or 18:00"},"milestones":{"type":"string","description":"Comma list of label:minutesBefore (default Venue access:240,Decor done:120,Caterer arrives:90,Sound check:60,Doors open:30)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"timeline":{"type":["array","null"],"items":{"type":"object","properties":{"step":{"type":["null","number"]},"time":{"type":["null","string"]},"label":{"type":["null","string"]},"dayOffset":{"type":["null","number"]},"minutesBefore":{"type":["null","number"]}}}},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"milestoneCount":{"type":["null","number"]},"eventStartClock":{"type":["null","string"]},"hoursFromFirstToStart":{"type":["null","number"]}}}}}}},"responseSchema":null,"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_H3ox_B4lFoWjOgXQRxQpK","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":"Converts an event start time and milestone offsets (in minutes before start) into a chronological 12-hour clock schedule, listed earliest first.","exampleAgentPrompt":"Can you build me a backwards event timeline for a party starting at 7:00 PM, with milestones for Venue access at 240 minutes before, Decor done at 120 minutes before, Caterer arrives at 90 minutes before, Sound check at 60 minutes before, and Doors open at 30 minutes before?","exampleUseCases":[{"title":"Wedding reception run-of-show","prompt":"My wedding reception starts at 6:30 PM — can you give me a timeline showing when the venue opens for setup, when the florist should be done, when catering arrives, and when guests can come in, using 240, 150, 90, and 30 minutes before as the offsets?"},{"title":"Corporate event vendor schedule","prompt":"I have a corporate dinner starting at 7:00 PM and I need to know the exact clock times for: AV setup at 180 minutes before, catering delivery at 120 minutes before, sound check at 60 minutes before, and doors open at 20 minutes before."},{"title":"Birthday party logistics planner","prompt":"Can you build a schedule for my birthday party that starts at 5:00 PM? I need clock times for when to start decorating (180 minutes before), when the DJ arrives (90 minutes before), when food should be ready (30 minutes before), and when guests arrive (0 minutes before)."}],"resultDescription":"Returns an ordered array of timeline steps, each with a label, 12-hour clock time, step number, minutes before event start, and an optional day offset. Also includes the event start time in clock format, total milestone count, and hours spanning from the first milestone to the start time.","failureModes":["Missing or unparseable eventStart parameter returns an error","Malformed milestones string (bad format) may cause parsing failure or default fallback","Times that cross midnight may produce unexpected day offset values","Invalid time formats (e.g. ambiguous strings) may not be recognized"],"whenToPreferThis":"Use this endpoint when you need to convert an event start time and a set of pre-event milestones (expressed as minutes before start) into human-readable 12-hour clock times in chronological order. It is purpose-built for party and event planning logistics, returning a structured, labeled timeline rather than a raw time difference. Choose this over a generic calendar API when you need a ready-to-display run-of-show schedule with vendor/activity labels.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T14:28:34.562Z","isFirstParty":false,"canonicalSlug":"party-event-planner-event-timeline-calculator-ea80a833"}