RRULE recurrence expander — generate bounded RFC 5545 iCalendar occurrences in I
RRULE recurrence expander — generate bounded RFC 5545 iCalendar occurrences in IANA timezones with windows, work limits, and daylight-saving (DST) policies.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
603 msmedian answer time
$0.005listed price per call
$0.005price 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
POST https://schedule-tools.use.x402atlas.com/rrule-expand
| Category | Everything else |
|---|---|
| Provider host | schedule-tools.use.x402atlas.com |
| Networks | eip155:137, eip155:42161, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 603 ms |
Example input (from the provider)
{
"body": {
"ambiguous_time": "reject",
"dtstart_local": "1997-09-02T09:00:00",
"limit": 8,
"nonexistent_time": "reject",
"rrule": "FREQ=WEEKLY;COUNT=10;BYDAY=TU,TH",
"timezone": "America/New_York",
"window_end": "1997-10-01T00:00:00-04:00",
"window_start": "1997-09-02T09:00:00-04:00"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"ambiguous_time": {
"description": "Policy for repeated civil occurrences",
"enum": [
"earlier",
"later",
"reject"
],
"type": "string"
},
"dtstart_local": {
"description": "Civil DTSTART in YYYY-MM-DDTHH:MM:SS",
"pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}$",
"type": "string"
},
"limit": {
"description": "Maximum occurrences to return",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"nonexistent_time": {
"description": "Policy for skipped civil occurrences",
"enum": [
"reject",
"shift_forward"
],
"type": "string"
},
"rrule": {
"description": "One RFC5545 RRULE using the documented bounded V1 subset",
"maxLength": 2048,
"minLength": 10,
"type": "string"
},
"timezone": {
"description": "UTC or IANA area/location name",
"maxLength": 128,
"minLength": 3,
"type": "string"
},
"window_end": {
"description": "Exclusive RFC3339 whole-second window end within the five- and ten-year ceilings",
"format": "date-time",
"type": "string"
},
"window_start": {
"description": "Inclusive RFC3339 whole-second window start at or after DTSTART",
"format": "date-time",
"type": "string"
}
},
"required": [
"dtstart_local",
"timezone",
"rrule",
"window_start",
"window_end",
"limit",
"ambiguous_time",
"nonexistent_time"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"_atlas": {
"additionalProperties": false,
"description": "Atlas documentation and related-route metadata added after deployment",
"properties": {
"docs": {
"description": "Documentation URL for this bridge",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"related": {
"description": "Bounded related Atlas routes",
"items": {
"additionalProperties": false,
"description": "One related Atlas route",
"properties": {
"bridge": {
"description": "Related bridge name",
"maxLength": 64,
"type": "string"
},
"docs": {
"description": "Related bridge documentation URL",
"format": "uri",
"maxLength": 512,
"type": "string"
},
"summary": {
"description": "Short capability summary",
"maxLength": 256,
"type": "string"
},
"url": {
"description": "Related route URL",
"format": "uri",
"maxLength": 512,
"type": "string"
}
},
"required": [
"bridge",
"url",
"docs",
"summary"
],
"type": "object"
},
"maxItems": 3,
"type": "array"
}
},
"required": [
"docs"
],
"type": "object"
},
"algorithm_version": {
"const": "schedule-v1",
"description": "Pinned RFC subset and timezone-resolution contract",
"type": "string"
},
"ambiguous_time": {
"description": "Applied DST-fold policy",
"enum": [
"earlier",
"later",
"reject"
],
"type": "string"
},
"dtstart_local": {
"description": "Civil DTSTART anchor",
"type": "string"
},
"go_toolchain_version": {
"const": "go1.26.3",
"description": "Reviewed Go toolchain",
"type": "string"
},
"iana_tzdata_version": {
"const": "2026a",
"description": "Reviewed IANA timezone release",
"type": "string"
},
"limit": {
"description":