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Create a sync.day availability poll and get its share link. Candidate days run from startDate to endDate (inclusive; or give days instead). Each day offers candidate START times from hourFrom, every startStepMinutes, as long as start + durationMinutes <= hourTo. Returns slug, public url (share this), adminUrl and adminKey (keep private; needed for update_event / remove_participant). Example: 周六周日下午聚餐 3 小时 -> {title:'周末聚餐', startDate:'2026-09-05', endDate:'2026-09-06', hourFrom:13, hourTo:18, durationMinutes:180, startStepMinutes:60}.
Event name, max 60 chars. e.g. 周末聚餐, Team sync
End of each day's window, exclusive (1-24), must be > hourFrom. e.g. 22
Earliest hour of each day (0-23). e.g. 9
First candidate day, YYYY-MM-DD. e.g. 2026-09-05
Event length in minutes. One of 30, 60, 90, 120, 180, 240, 480.
Number of consecutive days from startDate (1-21); alternative to endDate.
Last candidate day, inclusive, YYYY-MM-DD (same as startDate for a single day; at most 21 days). Give this or days; endDate wins when both are set.
Optional prompt shown to participants, max 200 chars. e.g. 哪天晚上有空？
Gap between candidate start times in minutes: 30 or 60 (default 60).
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Create a sync.day availability poll and get its share link. Candidate days run from startDate to endDate (inclusive; or give days instead). Each day offers candidate START times from hourFrom, every startStepMinutes, as long as start + durationMinutes <= hourTo. Returns slug, public url (share this), adminUrl and adminKey (keep private; needed for update_event / remove_participant). Example: 周六周日下午聚餐 3 小时 -> {title:'周末聚餐', startDate:'2026-09-05', endDate:'2026-09-06', hourFrom:13, hourTo:18, durationMinutes:180, startStepMinutes:60}.
| Argument | Type | Description |
|---|---|---|
| days | integer | Number of consecutive days from startDate (1-21); alternative to endDate. |
| title* | string | Event name, max 60 chars. e.g. 周末聚餐, Team sync |
| hourTo* | integer | End of each day's window, exclusive (1-24), must be > hourFrom. e.g. 22 |
| endDate | string | Last candidate day, inclusive, YYYY-MM-DD (same as startDate for a single day; at most 21 days). Give this or days; endDate wins when both are set. |
| hourFrom* | integer | Earliest hour of each day (0-23). e.g. 9 |
| question | string | Optional prompt shown to participants, max 200 chars. e.g. 哪天晚上有空？ |
| startDate* | string | First candidate day, YYYY-MM-DD. e.g. 2026-09-05 |
| durationMinutes* | any | Event length in minutes. One of 30, 60, 90, 120, 180, 240, 480. |
| startStepMinutes | any | Gap between candidate start times in minutes: 30 or 60 (default 60). |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"title",
"startDate",
"hourFrom",
"hourTo",
"durationMinutes"
],
"properties": {
"days": {
"type": "integer",
"maximum": 21,
"minimum": 1,
"description": "Number of consecutive days from startDate (1-21); alternative to endDate."
},
"title": {
"type": "string",
"maxLength": 60,
"minLength": 1,
"description": "Event name, max 60 chars. e.g. 周末聚餐, Team sync"
},
"hourTo": {
"type": "integer",
"maximum": 24,
"minimum": 1,
"description": "End of each day's window, exclusive (1-24), must be > hourFrom. e.g. 22"
},
"endDate": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Last candidate day, inclusive, YYYY-MM-DD (same as startDate for a single day; at most 21 days). Give this or days; endDate wins when both are set."
},
"hourFrom": {
"type": "integer",
"maximum": 23,
"minimum": 0,
"description": "Earliest hour of each day (0-23). e.g. 9"
},
"question": {
"type": "string",
"maxLength": 200,
"description": "Optional prompt shown to participants, max 200 chars. e.g. 哪天晚上有空？"
},
"startDate": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "First candidate day, YYYY-MM-DD. e.g. 2026-09-05"
},
"durationMinutes": {
"anyOf": [
{
"type": "number",
"const": 30
},
{
"type": "number",
"const": 60
},
{
"type": "number",
"const": 90
},
{
"type": "number",
"const": 120
},
{
"type": "number",
"const": 180
},
{
"type": "number",
"const": 240
},
{
"type": "number",
"const": 480
}
],
"description": "Event length in minutes. One of 30, 60, 90, 120, 180, 240, 480."
},
"startStepMinutes": {
"anyOf": [
{
"type": "number",
"const": 30
},
{
"type": "number",
"const": 60
}
],
"default": 60,
"description": "Gap between candidate start times in minutes: 30 or 60 (default 60)."
}
}
}Organiser only: settle on a start time (locks availability picking and voting; the page shows 已定). Pass start=null to reopen. Requires the adminKey from create_event.
| Argument | Type | Description |
|---|---|---|
| slug* | string | Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821) |
| start* | any | A candidate start key of the event (normally one of voteOptions), or null to reopen. |
| adminKey* | string | Organiser key returned by create_event (the ?key= part of adminUrl). |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"slug",
"adminKey",
"start"
],
"properties": {
"slug": {
"type": "string",
"pattern": "^(?:[a-z]{3,7}-[a-z]{3,7}(?:-\\d{2}|-\\d{4})?|[A-Za-z0-9_-]{10})$",
"description": "Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821)"
},
"start": {
"anyOf": [
{
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}$"
},
{
"type": "null"
}
],
"description": "A candidate start key of the event (normally one of voteOptions), or null to reopen."
},
"adminKey": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{12}(?:[A-Za-z0-9_-]{12})?$",
"description": "Organiser key returned by create_event (the ?key= part of adminUrl)."
}
}
}Read an event: settings, every candidate start key per day (startOptions), who has answered (participants with their start keys; names may repeat), the top 10 start times by head-count (ranked), the starts EVERYONE with picks can make with their votes (voteOptions), each person's vote (votes) and decidedStart. No key needed.
| Argument | Type | Description |
|---|---|---|
| slug* | string | Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821) |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"slug"
],
"properties": {
"slug": {
"type": "string",
"pattern": "^(?:[a-z]{3,7}-[a-z]{3,7}(?:-\\d{2}|-\\d{4})?|[A-Za-z0-9_-]{10})$",
"description": "Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821)"
}
}
}Turn a natural-language sentence (Chinese works best) into create_event input using sync.day's AI parser. Does NOT create anything; review the result, then call create_event. Example: '下周六或周日下午聚餐，大概 3 小时'.
| Argument | Type | Description |
|---|---|---|
| text* | string | One sentence describing the event, max 300 chars. |
| today | string | Reference date for relative words like 明天/下周, YYYY-MM-DD. Defaults to today in Asia/Shanghai. |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"text"
],
"properties": {
"text": {
"type": "string",
"maxLength": 300,
"minLength": 1,
"description": "One sentence describing the event, max 300 chars."
},
"today": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Reference date for relative words like 明天/下周, YYYY-MM-DD. Defaults to today in Asia/Shanghai."
}
}
}Organiser only: remove one participant by name (the oldest row with that name when it repeats), together with their vote. Requires the adminKey from create_event.
| Argument | Type | Description |
|---|---|---|
| name* | string | Exact participant name to remove. |
| slug* | string | Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821) |
| adminKey* | string | Organiser key returned by create_event (the ?key= part of adminUrl). |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"slug",
"name",
"adminKey"
],
"properties": {
"name": {
"type": "string",
"maxLength": 20,
"minLength": 1,
"description": "Exact participant name to remove."
},
"slug": {
"type": "string",
"pattern": "^(?:[a-z]{3,7}-[a-z]{3,7}(?:-\\d{2}|-\\d{4})?|[A-Za-z0-9_-]{10})$",
"description": "Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821)"
},
"adminKey": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{12}(?:[A-Za-z0-9_-]{12})?$",
"description": "Organiser key returned by create_event (the ?key= part of adminUrl)."
}
}
}Save (or replace) one person's availability: the candidate start keys they can make, from get_event.startOptions. The person is identified by `identity`, not by name: the same identity later overwrites the same row (and can rename it), a different identity with the same name is a second participant. Keys outside the event's start options are rejected. Returns the updated ranking.
| Argument | Type | Description |
|---|---|---|
| name* | string | Display name, 1-20 chars, may repeat. e.g. 小明 |
| slug* | string | Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821) |
| starts* | array | Start keys like 2026-09-05T14:00. Empty array clears this person's picks. |
| identity* | string | Random secret for this person that you generate and keep per person, 16-256 chars (e.g. 32 hex chars; NOT a plain user id or name, since anyone who guesses it can act as them). Same identity = same participant; the server stores only a hash. Example: 3f9a1c77b2e04d5e8a61f0c9d2b7e415 |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"slug",
"identity",
"name",
"starts"
],
"properties": {
"name": {
"type": "string",
"maxLength": 20,
"minLength": 1,
"description": "Display name, 1-20 chars, may repeat. e.g. 小明"
},
"slug": {
"type": "string",
"pattern": "^(?:[a-z]{3,7}-[a-z]{3,7}(?:-\\d{2}|-\\d{4})?|[A-Za-z0-9_-]{10})$",
"description": "Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821)"
},
"starts": {
"type": "array",
"items": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}$"
},
"maxItems": 1008,
"description": "Start keys like 2026-09-05T14:00. Empty array clears this person's picks."
},
"identity": {
"type": "string",
"maxLength": 256,
"minLength": 16,
"description": "Random secret for this person that you generate and keep per person, 16-256 chars (e.g. 32 hex chars; NOT a plain user id or name, since anyone who guesses it can act as them). Same identity = same participant; the server stores only a hash. Example: 3f9a1c77b2e04d5e8a61f0c9d2b7e415"
}
}
}Organiser only: change any event settings (same fields and rules as create_event; omitted fields keep their current value; endDate wins over days). Existing picks are kept; those no longer valid starts are just hidden.
| Argument | Type | Description |
|---|---|---|
| days | integer | Number of consecutive days from startDate (1-21); alternative to endDate. |
| slug* | string | Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821) |
| title | string | Event name, max 60 chars. e.g. 周末聚餐, Team sync |
| hourTo | integer | End of each day's window, exclusive (1-24), must be > hourFrom. e.g. 22 |
| endDate | string | Last candidate day, inclusive, YYYY-MM-DD (same as startDate for a single day; at most 21 days). Give this or days; endDate wins when both are set. |
| adminKey* | string | Organiser key returned by create_event (the ?key= part of adminUrl). |
| hourFrom | integer | Earliest hour of each day (0-23). e.g. 9 |
| question | string | Optional prompt shown to participants, max 200 chars. e.g. 哪天晚上有空？ |
Approval voting: set every start one person accepts (replaces their earlier approvals; an empty list clears them). The voter is the `identity` used in submit_availability and must have at least one start saved. Only keys listed in get_event.voteOptions are accepted; the error lists the current options otherwise. Rejected once the organiser decided. Example: {slug:'calm-otter-4821', identity:'3f9a1c77b2e04d5e8a61f0c9d2b7e415', starts:['2026-09-05T15:00','2026-09-06T10:00']}. `start` is shorthand for a single-item `starts`.
| Argument | Type | Description |
|---|---|---|
| slug* | string | Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821) |
| start | string | Shorthand for starts: [start] |
| starts | array | All start keys this person accepts (from get_event.voteOptions); [] clears their approvals |
| identity* | string | Random secret for this person that you generate and keep per person, 16-256 chars (e.g. 32 hex chars; NOT a plain user id or name, since anyone who guesses it can act as them). Same identity = same participant; the server stores only a hash. Example: 3f9a1c77b2e04d5e8a61f0c9d2b7e415 |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"slug",
"identity"
],
"properties": {
"slug": {
"type": "string",
"pattern": "^(?:[a-z]{3,7}-[a-z]{3,7}(?:-\\d{2}|-\\d{4})?|[A-Za-z0-9_-]{10})$",
"description": "Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821)"
},
"start": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}$",
"description": "Shorthand for starts: [start]"
},
"starts": {
"type": "array",
"items": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}$",
"description": "Start key, e.g. 2026-09-05T15:00"
},
"maxItems": 500,
"description": "All start keys this person accepts (from get_event.voteOptions); [] clears their approvals"
},
"identity": {
"type": "string",
"maxLength": 256,
"minLength": 16,
"description": "Random secret for this person that you generate and keep per person, 16-256 chars (e.g. 32 hex chars; NOT a plain user id or name, since anyone who guesses it can act as them). Same identity = same participant; the server stores only a hash. Example: 3f9a1c77b2e04d5e8a61f0c9d2b7e415"
}
}
}| startDate |
| string |
| First candidate day, YYYY-MM-DD. e.g. 2026-09-05 |
| durationMinutes | any | Event length in minutes. One of 30, 60, 90, 120, 180, 240, 480. |
| startStepMinutes | any | Gap between candidate start times in minutes: 30 or 60 (default 60). |
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"slug",
"adminKey"
],
"properties": {
"days": {
"type": "integer",
"maximum": 21,
"minimum": 1,
"description": "Number of consecutive days from startDate (1-21); alternative to endDate."
},
"slug": {
"type": "string",
"pattern": "^(?:[a-z]{3,7}-[a-z]{3,7}(?:-\\d{2}|-\\d{4})?|[A-Za-z0-9_-]{10})$",
"description": "Event slug from the URL, e.g. calm-otter-4821 (sync.day/calm-otter-4821)"
},
"title": {
"type": "string",
"maxLength": 60,
"minLength": 1,
"description": "Event name, max 60 chars. e.g. 周末聚餐, Team sync"
},
"hourTo": {
"type": "integer",
"maximum": 24,
"minimum": 1,
"description": "End of each day's window, exclusive (1-24), must be > hourFrom. e.g. 22"
},
"endDate": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "Last candidate day, inclusive, YYYY-MM-DD (same as startDate for a single day; at most 21 days). Give this or days; endDate wins when both are set."
},
"adminKey": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{12}(?:[A-Za-z0-9_-]{12})?$",
"description": "Organiser key returned by create_event (the ?key= part of adminUrl)."
},
"hourFrom": {
"type": "integer",
"maximum": 23,
"minimum": 0,
"description": "Earliest hour of each day (0-23). e.g. 9"
},
"question": {
"type": "string",
"maxLength": 200,
"description": "Optional prompt shown to participants, max 200 chars. e.g. 哪天晚上有空？"
},
"startDate": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"description": "First candidate day, YYYY-MM-DD. e.g. 2026-09-05"
},
"durationMinutes": {
"anyOf": [
{
"type": "number",
"const": 30
},
{
"type": "number",
"const": 60
},
{
"type": "number",
"const": 90
},
{
"type": "number",
"const": 120
},
{
"type": "number",
"const": 180
},
{
"type": "number",
"const": 240
},
{
"type": "number",
"const": 480
}
],
"description": "Event length in minutes. One of 30, 60, 90, 120, 180, 240, 480."
},
"startStepMinutes": {
"anyOf": [
{
"type": "number",
"const": 30
},
{
"type": "number",
"const": 60
}
],
"default": 60,
"description": "Gap between candidate start times in minutes: 30 or 60 (default 60)."
}
}
}