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Calendar Ics Build

by Tanod utilpeek in Productivity & SaaS

x402 APIPassing, checked 2 h ago

utilpeek (Tanod) iCalendar builder: JSON events to an RFC 5545 .ics file with time zones, recurrence and attendees. Use when an agent must hand a user a calendar invite: events as JSON in, a .ics file out.

POST https://tanod.dev/v1/calendar/ics-build

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Uptime
100%
Response time
280 ms typical, 487 ms slowest 5%
Last check
2 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://tanod.dev/v1/calendar/ics-build" \
  -H "content-type: application/json" \
  -d '{"events":[{"attendees":["[email protected]"],"duration":"PT30M","rrule":"FREQ=WEEKLY;BYDAY=MO;COUNT=4","start":"2026-11-02T09:00:00","summary":"Team sync","timezone":"Europe/Berlin"}]}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftanod.dev%2Fv1%2Fcalendar%2Fics-build
const res = await pay("https://tanod.dev/v1/calendar/ics-build", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"events":[{"attendees":["[email protected]"],"duration":"PT30M","rrule":"FREQ=WEEKLY;BYDAY=MO;COUNT=4","start":"2026-11-02T09:00:00","summary":"Team sync","timezone":"Europe/Berlin"}]}),
});
console.log(await res.json());

Example input

{
  "events": [
    {
      "attendees": [
        "[email protected]"
      ],
      "duration": "PT30M",
      "rrule": "FREQ=WEEKLY;BYDAY=MO;COUNT=4",
      "start": "2026-11-02T09:00:00",
      "summary": "Team sync",
      "timezone": "Europe/Berlin"
    }
  ]
}

Example output

{
  "base64": "QkVHSU46VkNBTEVOREFS",
  "bytes": 190,
  "data_uri": "data:text/calendar;charset=utf-8;base64,QkVHSU46VkNBTEVOREFS",
  "event_count": 1,
  "filename": "calendar.ics",
  "ics": "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//Tanod//utilpeek calendar//EN\r\nBEGIN:VEVENT\r\nUID:[email protected]\r\nDTSTART;TZID=Europe/Berlin:20261102T090000\r\nSUMMARY:Team sync\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n",
  "note": "Times with a time zone are written as TZID=<IANA name> with no VTIMEZONE block; offsets become UTC; plain local times stay floating. All-day end is inclusive in the request.",
  "time_format": "tzid",
  "uids": [
    "[email protected]"
  ]
}

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