Expand an iCalendar recurrence rule into dates
Expand an iCalendar recurrence rule into dates - daily, weekly, monthly and yearly with INTERVAL, BYDAY (like last Friday), BYMONTHDAY, COUNT and UNTIL
Answeringour last check, 2026-10-20
1 of 1checks answered this week
503 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/time/recurrence
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.01 | 503 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"count": "6",
"rule": "FREQ=MONTHLY;BYDAY=-1FR",
"start": "2026-10-01"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"count": {
"description": "optional occurrences to list, 1-100, default 10",
"type": "string"
},
"rule": {
"description": "RRULE such as FREQ=WEEKLY;BYDAY=MO,WE;INTERVAL=2;COUNT=6",
"type": "string"
},
"start": {
"description": "Start date YYYY-MM-DD or datetime",
"type": "string"
}
},
"required": [
"rule",
"start"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"count": {
"description": "Number of items returned",
"type": "number"
},
"ended_by": {
"description": "Ended by",
"type": "string"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"occurrences": {
"description": "Dates with ISO date, weekday code and full datetime",
"items": {
"properties": {
"date": {
"description": "Date (YYYY-MM-DD)"
},
"datetime": {
"description": "Full timestamp of the occurrence",
"type": [
"string",
"null"
]
},
"weekday": {
"description": "Day of the week"
}
},
"type": "object"
},
"type": "array"
},
"rule": {
"description": "Recurrence rule that was expanded",
"type": "string"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"start": {
"description": "Start date or datetime as supplied",
"type": "string"
}
},
"required": [
"rule",
"occurrences"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}