API reference

Programme

Sessions, rooms, tracks and speakers.

List sessions

GET/events/{eventId}/sessions

Lists an event's sessions, oldest change first, each in UTC and in the venue's local time, with its room, track and speakers.

Scopes: program:read

Parameters

path

eventIdstring (uuid)required
The event's id.

query

cursorstring
Where the page starts: nextCursor from the page before, exactly as it was returned. Leave out for the first page.
limitinteger (int32)
How many on a page, up to 500.
Default: 100
updatedSincestring (date-time)
Only what changed at or after this moment, in UTC unless it says otherwise. Pass the newest updatedUtc your last sync saw.

Answers

200 A page of sessions. SessionList
Fields
- dataSession[]
  The items of this page.
  Show the fields
  - sessionIdstring (uuid)
    The session's id.
  - eventIdstring (uuid)
    The event's id.
  - titlestring
    Its title.
  - summarystring or null
    What it is about, in Markdown.
  - kindstring
    Talk, keynote, workshop, panel, break, meal, networking or other.
    One of: talk, keynote, workshop, panel, break, meal, networking, other
  - roomIdstring (uuid) or null
    Its room.
  - trackIdstring (uuid) or null
    Its track.
  - startsUtcstring (date-time)
    When it starts, in UTC.
  - endsUtcstring (date-time)
    When it ends, in UTC.
  - startsLocalstring
    When it starts, in the venue's time: what the agenda shows.
  - endsLocalstring
    When it ends, in the venue's time.
  - timeZonestring
    The venue's time zone.
  - minutesinteger (int32)
    How long it is.
  - capacityinteger (int32) or null
    Seats, when fewer than the room's.
  - languagestring or null
    The language it is given in.
  - joinProviderstring or null
    For an online session, which service it streams on: zoom, teams, youtube and so on. Never the link.
  - speakerIdsstring (uuid)[]
    Its speakers, in order.
  - updatedUtcstring (date-time) or null
    When it last changed, in UTC.
- nextCursorstring or null
  The cursor for the next page; null on the last page. Pass it as cursor, with the same filters.
- hasMoreboolean
  Whether there is another page.
400 invalidCursor, invalidUpdatedSince, invalidRequest.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope.
404 eventNotFound.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound invalidCursor invalidUpdatedSince invalidRequest

Request

curl "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions?limit=2" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY"

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions?limit=2", {
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`
  }
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Get, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions?limit=2");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os
import requests

response = requests.get(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions", params={"limit": 2},
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}"
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
}

$data = Invoke-RestMethod -Method Get -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions?limit=2" -Headers $headers

200 Example answer

JSON

{
  "data": [
    {
      "sessionId": "b3ac0004-0000-4000-8000-000000000000",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "title": "Registration and coffee",
      "summary": null,
      "kind": "other",
      "roomId": null,
      "trackId": null,
      "startsUtc": "2026-11-12T07:30:00.000Z",
      "endsUtc": "2026-11-12T08:30:00.000Z",
      "startsLocal": "2026-11-12T08:30",
      "endsLocal": "2026-11-12T09:30",
      "timeZone": "Europe/Amsterdam",
      "minutes": 60,
      "capacity": null,
      "language": null,
      "joinProvider": null,
      "speakerIds": [],
      "updatedUtc": "2026-10-14T21:40:48.084Z"
    },
    {
      "sessionId": "b3ac0004-0000-4000-8000-000000000001",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "title": "Opening keynote: software that finds its way",
      "summary": "Opening keynote: software that finds its way. What worked, what did not, and what to try on Monday.",
      "kind": "keynote",
      "roomId": "b3ac0001-0000-4000-8000-000000000000",
      "trackId": null,
      "startsUtc": "2026-11-12T08:30:00.000Z",
      "endsUtc": "2026-11-12T09:15:00.000Z",
      "startsLocal": "2026-11-12T09:30",
      "endsLocal": "2026-11-12T10:15",
      "timeZone": "Europe/Amsterdam",
      "minutes": 45,
      "capacity": null,
      "language": null,
      "joinProvider": null,
      "speakerIds": [
        "b3ac0003-0000-4000-8000-000000000009"
      ],
      "updatedUtc": "2026-10-14T21:40:48.086Z"
    }
  ],
  "nextCursor": "YzE6MDYzOTI3NjEwODQ4MDg2MDAwMHxiM2FjMDAwNDAwMDA0MDAwODAwMDAwMDAwMDAwMDAwMQ",
  "hasMore": true
}

400 invalidCursor, invalidUpdatedSince, invalidRequest.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidCursor",
  "title": "The cursor is not valid",
  "status": 400,
  "detail": "Pass nextCursor exactly as a list returned it, with the same filters.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions",
  "code": "invalidCursor",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "Pass nextCursor exactly as a list returned it, with the same filters."
}

Add a session Changes data

POST/events/{eventId}/sessions

Adds a session to the agenda by the agenda's rules: a room holds one session at a time unless allowClash is set, and the room, track and speakers are the event's own. When the event is published attendees see it at once.

Scopes: program:write

Send an Idempotency-Key to make retries safe. →

Parameters

path

eventIdstring (uuid)required
The event's id.

header

Idempotency-Keystring
A key of your own, such as a UUID, so a retry after a lost connection is answered with the first answer instead of doing it twice. Kept 24 hours.

Body NewSession

The session.

titlestringrequired
Its title, at most 300 characters.
kindstring
Talk (the default), keynote, workshop, panel, break, meal, networking or other.
One of: talk, keynote, workshop, panel, break, meal, networking, other
startsLocalstring
When it starts, in the venue's time.
endsLocalstring
When it ends, in the venue's time.
startsUtcstring (date-time)
Or when it starts, in UTC.
endsUtcstring (date-time)
Or when it ends, in UTC.
roomIdstring (uuid) or null
A room of the event.
trackIdstring (uuid) or null
A track of the event.
summarystring or null
What it is about, in Markdown.
capacityinteger (int32) or null
Seats, when fewer than the room's.
languagestring or null
The language it is given in.
speakerIdsstring (uuid)[]
Speakers of the event.
allowClashboolean
Place it even when another session has the room then.

Answers

201 The session. Session
Fields
- sessionIdstring (uuid)
  The session's id.
- eventIdstring (uuid)
  The event's id.
- titlestring
  Its title.
- summarystring or null
  What it is about, in Markdown.
- kindstring
  Talk, keynote, workshop, panel, break, meal, networking or other.
  One of: talk, keynote, workshop, panel, break, meal, networking, other
- roomIdstring (uuid) or null
  Its room.
- trackIdstring (uuid) or null
  Its track.
- startsUtcstring (date-time)
  When it starts, in UTC.
- endsUtcstring (date-time)
  When it ends, in UTC.
- startsLocalstring
  When it starts, in the venue's time: what the agenda shows.
- endsLocalstring
  When it ends, in the venue's time.
- timeZonestring
  The venue's time zone.
- minutesinteger (int32)
  How long it is.
- capacityinteger (int32) or null
  Seats, when fewer than the room's.
- languagestring or null
  The language it is given in.
- joinProviderstring or null
  For an online session, which service it streams on: zoom, teams, youtube and so on. Never the link.
- speakerIdsstring (uuid)[]
  Its speakers, in order.
- updatedUtcstring (date-time) or null
  When it last changed, in UTC.
400 invalidBody, invalidRequest, invalidIdempotencyKey.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope, demoWorkspace.
404 eventNotFound.
409 idempotencyKeyInUse, clash.
422 idempotencyKeyReused.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound invalidBody invalidRequest demoWorkspace idempotencyKeyInUse idempotencyKeyReused invalidIdempotencyKey clash

Request

curl -X POST "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
  "title": "Closing keynote: what we learned",
  "kind": "keynote",
  "startsLocal": "2026-11-13T16:30",
  "endsLocal": "2026-11-13T17:15",
  "roomId": "b3ac0001-0000-4000-8000-000000000000",
  "speakerIds": [
    "b3ac0003-0000-4000-8000-000000000000"
  ]
}'

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`,
    "Idempotency-Key": crypto.randomUUID(),
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "title": "Closing keynote: what we learned",
    "kind": "keynote",
    "startsLocal": "2026-11-13T16:30",
    "endsLocal": "2026-11-13T17:15",
    "roomId": "b3ac0001-0000-4000-8000-000000000000",
    "speakerIds": [
      "b3ac0003-0000-4000-8000-000000000000"
    ]
  })
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Post, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions");
request.Headers.Add("Idempotency-Key", Guid.NewGuid().ToString());
request.Content = new StringContent("""
{
  "title": "Closing keynote: what we learned",
  "kind": "keynote",
  "startsLocal": "2026-11-13T16:30",
  "endsLocal": "2026-11-13T17:15",
  "roomId": "b3ac0001-0000-4000-8000-000000000000",
  "speakerIds": [
    "b3ac0003-0000-4000-8000-000000000000"
  ]
}
""", Encoding.UTF8, "application/json");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os, uuid
import requests

response = requests.post(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions",
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}",
        "Idempotency-Key": str(uuid.uuid4())
    },
    json={
        "title": "Closing keynote: what we learned",
        "kind": "keynote",
        "startsLocal": "2026-11-13T16:30",
        "endsLocal": "2026-11-13T17:15",
        "roomId": "b3ac0001-0000-4000-8000-000000000000",
        "speakerIds": [
            "b3ac0003-0000-4000-8000-000000000000"
        ]
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
    "Idempotency-Key" = [guid]::NewGuid().ToString()
}
$body = @'
{
  "title": "Closing keynote: what we learned",
  "kind": "keynote",
  "startsLocal": "2026-11-13T16:30",
  "endsLocal": "2026-11-13T17:15",
  "roomId": "b3ac0001-0000-4000-8000-000000000000",
  "speakerIds": [
    "b3ac0003-0000-4000-8000-000000000000"
  ]
}
'@

$data = Invoke-RestMethod -Method Post -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions" -Headers $headers -ContentType "application/json" -Body $body

201 Example answer

JSON

{
  "sessionId": "b3ac0004-0000-4000-8000-000000000000",
  "eventId": "b3ac0000-0000-4000-8000-000000000001",
  "title": "Registration and coffee",
  "summary": null,
  "kind": "other",
  "roomId": null,
  "trackId": null,
  "startsUtc": "2026-11-12T07:30:00.000Z",
  "endsUtc": "2026-11-12T08:30:00.000Z",
  "startsLocal": "2026-11-12T08:30",
  "endsLocal": "2026-11-12T09:30",
  "timeZone": "Europe/Amsterdam",
  "minutes": 60,
  "capacity": null,
  "language": null,
  "joinProvider": null,
  "speakerIds": [],
  "updatedUtc": "2026-10-14T21:40:48.084Z"
}

400 invalidBody, invalidRequest, invalidIdempotencyKey.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidBody",
  "title": "The body is not readable",
  "status": 400,
  "detail": "The body is not JSON, or a field has the wrong type.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions",
  "code": "invalidBody",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "The body is not JSON, or a field has the wrong type."
}

Get a session

GET/events/{eventId}/sessions/{sessionId}

Gets one session, in UTC and in the venue's local time.

Scopes: program:read

Answers with an ETag; send If-None-Match to save a download.

Parameters

path

eventIdstring (uuid)required
The event's id.
sessionIdstring (uuid)required
The session's id.

header

If-None-Matchstring
The ETag you have: when it is still current the answer is 304 with no body.

Answers

200 The session. Session
Fields
- sessionIdstring (uuid)
  The session's id.
- eventIdstring (uuid)
  The event's id.
- titlestring
  Its title.
- summarystring or null
  What it is about, in Markdown.
- kindstring
  Talk, keynote, workshop, panel, break, meal, networking or other.
  One of: talk, keynote, workshop, panel, break, meal, networking, other
- roomIdstring (uuid) or null
  Its room.
- trackIdstring (uuid) or null
  Its track.
- startsUtcstring (date-time)
  When it starts, in UTC.
- endsUtcstring (date-time)
  When it ends, in UTC.
- startsLocalstring
  When it starts, in the venue's time: what the agenda shows.
- endsLocalstring
  When it ends, in the venue's time.
- timeZonestring
  The venue's time zone.
- minutesinteger (int32)
  How long it is.
- capacityinteger (int32) or null
  Seats, when fewer than the room's.
- languagestring or null
  The language it is given in.
- joinProviderstring or null
  For an online session, which service it streams on: zoom, teams, youtube and so on. Never the link.
- speakerIdsstring (uuid)[]
  Its speakers, in order.
- updatedUtcstring (date-time) or null
  When it last changed, in UTC.
304 Not modified: If-None-Match named the representation as it is.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope.
404 eventNotFound, notFound.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound notFound

Request

curl "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY"

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000", {
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`
  }
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Get, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os
import requests

response = requests.get(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000",
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}"
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
}

$data = Invoke-RestMethod -Method Get -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000" -Headers $headers

200 Example answer

JSON

{
  "sessionId": "b3ac0004-0000-4000-8000-000000000000",
  "eventId": "b3ac0000-0000-4000-8000-000000000001",
  "title": "Registration and coffee",
  "summary": null,
  "kind": "other",
  "roomId": null,
  "trackId": null,
  "startsUtc": "2026-11-12T07:30:00.000Z",
  "endsUtc": "2026-11-12T08:30:00.000Z",
  "startsLocal": "2026-11-12T08:30",
  "endsLocal": "2026-11-12T09:30",
  "timeZone": "Europe/Amsterdam",
  "minutes": 60,
  "capacity": null,
  "language": null,
  "joinProvider": null,
  "speakerIds": [],
  "updatedUtc": "2026-10-14T21:40:48.084Z"
}

401 invalidKey, keyExpired, keyRevoked.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidKey",
  "title": "No working API key",
  "status": 401,
  "detail": "No key was sent, or it is not one this platform made. Send it as Authorization: Bearer abk_... or in X-Api-Key.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/{sessionId}",
  "code": "invalidKey",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "No key was sent, or it is not one this platform made. Send it as Authorization: Bearer abk_... or in X-Api-Key."
}

Change a session Changes data

PATCH/events/{eventId}/sessions/{sessionId}

Changes a session as a JSON merge patch. Those who saved it in the app hear when it moves, as when the organiser moves it in the workspace.

Scopes: program:write

Send If-Match with the ETag you read, so a change in between is not overwritten.

Parameters

path

eventIdstring (uuid)required
The event's id.
sessionIdstring (uuid)required
The session's id.

header

If-Matchstring
The ETag you read, so a change made since is refused (412) rather than overwritten.

Body SessionPatch

The fields to change.

titlestring
Its title.
kindstring
Its kind.
startsLocalstring
When it starts, in the venue's time.
endsLocalstring
When it ends, in the venue's time.
startsUtcstring (date-time)
Or when it starts, in UTC.
endsUtcstring (date-time)
Or when it ends, in UTC.
roomIdstring (uuid) or null
A room of the event, or null for none.
trackIdstring (uuid) or null
A track of the event, or null for none.
summarystring or null
What it is about.
capacityinteger (int32) or null
Seats, or null for the room's.
languagestring or null
Its language.
speakerIdsstring (uuid)[]
Its speakers: the whole list.
allowClashboolean
Place it even when another session has the room then.

Answers

200 The session as it is now. Session
Fields
- sessionIdstring (uuid)
  The session's id.
- eventIdstring (uuid)
  The event's id.
- titlestring
  Its title.
- summarystring or null
  What it is about, in Markdown.
- kindstring
  Talk, keynote, workshop, panel, break, meal, networking or other.
  One of: talk, keynote, workshop, panel, break, meal, networking, other
- roomIdstring (uuid) or null
  Its room.
- trackIdstring (uuid) or null
  Its track.
- startsUtcstring (date-time)
  When it starts, in UTC.
- endsUtcstring (date-time)
  When it ends, in UTC.
- startsLocalstring
  When it starts, in the venue's time: what the agenda shows.
- endsLocalstring
  When it ends, in the venue's time.
- timeZonestring
  The venue's time zone.
- minutesinteger (int32)
  How long it is.
- capacityinteger (int32) or null
  Seats, when fewer than the room's.
- languagestring or null
  The language it is given in.
- joinProviderstring or null
  For an online session, which service it streams on: zoom, teams, youtube and so on. Never the link.
- speakerIdsstring (uuid)[]
  Its speakers, in order.
- updatedUtcstring (date-time) or null
  When it last changed, in UTC.
400 invalidBody, invalidRequest.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope, demoWorkspace.
404 eventNotFound, notFound.
409 clash.
412 preconditionFailed.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound notFound invalidBody invalidRequest demoWorkspace preconditionFailed clash

Request

curl -X PATCH "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY" \
  -H "If-Match: $ETAG" \
  -H "Content-Type: application/json" \
  -d '{
  "startsLocal": "2026-11-12T11:15",
  "endsLocal": "2026-11-12T12:00"
}'

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000", {
  method: "PATCH",
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`,
    "If-Match": etag,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "startsLocal": "2026-11-12T11:15",
    "endsLocal": "2026-11-12T12:00"
  })
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Patch, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000");
request.Headers.IfMatch.Add(new EntityTagHeaderValue(etag));
request.Content = new StringContent("""
{
  "startsLocal": "2026-11-12T11:15",
  "endsLocal": "2026-11-12T12:00"
}
""", Encoding.UTF8, "application/json");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os
import requests

response = requests.patch(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000",
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}",
        "If-Match": etag
    },
    json={
        "startsLocal": "2026-11-12T11:15",
        "endsLocal": "2026-11-12T12:00"
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
    "If-Match" = $etag
}
$body = @'
{
  "startsLocal": "2026-11-12T11:15",
  "endsLocal": "2026-11-12T12:00"
}
'@

$data = Invoke-RestMethod -Method Patch -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/b3ac0004-0000-4000-8000-000000000000" -Headers $headers -ContentType "application/json" -Body $body

200 Example answer

JSON

{
  "sessionId": "b3ac0004-0000-4000-8000-000000000000",
  "eventId": "b3ac0000-0000-4000-8000-000000000001",
  "title": "Registration and coffee",
  "summary": null,
  "kind": "other",
  "roomId": null,
  "trackId": null,
  "startsUtc": "2026-11-12T07:30:00.000Z",
  "endsUtc": "2026-11-12T08:30:00.000Z",
  "startsLocal": "2026-11-12T08:30",
  "endsLocal": "2026-11-12T09:30",
  "timeZone": "Europe/Amsterdam",
  "minutes": 60,
  "capacity": null,
  "language": null,
  "joinProvider": null,
  "speakerIds": [],
  "updatedUtc": "2026-10-14T21:40:48.084Z"
}

400 invalidBody, invalidRequest.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidBody",
  "title": "The body is not readable",
  "status": 400,
  "detail": "The body is not JSON, or a field has the wrong type.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/sessions/{sessionId}",
  "code": "invalidBody",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "The body is not JSON, or a field has the wrong type."
}

List rooms

GET/events/{eventId}/rooms

Lists an event's rooms in the agenda's order, left to right.

Scopes: program:read

Parameters

path

eventIdstring (uuid)required
The event's id.

query

cursorstring
Where the page starts: nextCursor from the page before, exactly as it was returned. Leave out for the first page.
limitinteger (int32)
How many on a page, up to 500.
Default: 100

Answers

200 A page of rooms. RoomList
Fields
- dataRoom[]
  The items of this page.
  Show the fields
  - roomIdstring (uuid)
    The room's id.
  - eventIdstring (uuid)
    The event's id.
  - namestring
    Its name.
  - locationstring or null
    How to find it.
  - capacityinteger (int32) or null
    Seats.
  - sortOrderinteger (int32)
    Its place on the agenda, left to right.
- nextCursorstring or null
  The cursor for the next page; null on the last page. Pass it as cursor, with the same filters.
- hasMoreboolean
  Whether there is another page.
400 invalidCursor.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope.
404 eventNotFound.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound invalidCursor

Request

curl "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/rooms?limit=2" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY"

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/rooms?limit=2", {
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`
  }
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Get, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/rooms?limit=2");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os
import requests

response = requests.get(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/rooms", params={"limit": 2},
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}"
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
}

$data = Invoke-RestMethod -Method Get -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/rooms?limit=2" -Headers $headers

200 Example answer

JSON

{
  "data": [
    {
      "roomId": "b3ac0001-0000-4000-8000-000000000000",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "name": "Main Hall",
      "location": "Ground floor, straight ahead",
      "capacity": 600,
      "sortOrder": 0
    },
    {
      "roomId": "b3ac0001-0000-4000-8000-000000000001",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "name": "Graanbeurs",
      "location": "Ground floor, left wing",
      "capacity": 220,
      "sortOrder": 1
    }
  ],
  "nextCursor": "YzE6MDAwMDAwMTAwMDAwMDAwMDAwMXxiM2FjMDAwMTAwMDA0MDAwODAwMDAwMDAwMDAwMDAwMQ",
  "hasMore": true
}

400 invalidCursor.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidCursor",
  "title": "The cursor is not valid",
  "status": 400,
  "detail": "Pass nextCursor exactly as a list returned it, with the same filters.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/rooms",
  "code": "invalidCursor",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "Pass nextCursor exactly as a list returned it, with the same filters."
}

List tracks

GET/events/{eventId}/tracks

Lists an event's tracks: the themes through its agenda.

Scopes: program:read

Parameters

path

eventIdstring (uuid)required
The event's id.

query

cursorstring
Where the page starts: nextCursor from the page before, exactly as it was returned. Leave out for the first page.
limitinteger (int32)
How many on a page, up to 500.
Default: 100

Answers

200 A page of tracks. TrackList
Fields
- dataTrack[]
  The items of this page.
  Show the fields
  - trackIdstring (uuid)
    The track's id.
  - eventIdstring (uuid)
    The event's id.
  - namestring
    Its name.
  - colourstring
    Its colour on the agenda, as #rrggbb.
  - sortOrderinteger (int32)
    Its place in the filter.
- nextCursorstring or null
  The cursor for the next page; null on the last page. Pass it as cursor, with the same filters.
- hasMoreboolean
  Whether there is another page.
400 invalidCursor.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope.
404 eventNotFound.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound invalidCursor

Request

curl "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/tracks?limit=2" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY"

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/tracks?limit=2", {
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`
  }
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Get, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/tracks?limit=2");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os
import requests

response = requests.get(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/tracks", params={"limit": 2},
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}"
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
}

$data = Invoke-RestMethod -Method Get -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/tracks?limit=2" -Headers $headers

200 Example answer

JSON

{
  "data": [
    {
      "trackId": "b3ac0002-0000-4000-8000-000000000000",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "name": "Cloud & AI",
      "colour": "#2b8fd0",
      "sortOrder": 0
    },
    {
      "trackId": "b3ac0002-0000-4000-8000-000000000001",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "name": "Product",
      "colour": "#c2410c",
      "sortOrder": 1
    }
  ],
  "nextCursor": "YzE6MDAwMDAwMTAwMDAwMDAwMDAwMXxiM2FjMDAwMjAwMDA0MDAwODAwMDAwMDAwMDAwMDAwMQ",
  "hasMore": true
}

400 invalidCursor.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidCursor",
  "title": "The cursor is not valid",
  "status": 400,
  "detail": "Pass nextCursor exactly as a list returned it, with the same filters.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/tracks",
  "code": "invalidCursor",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "Pass nextCursor exactly as a list returned it, with the same filters."
}

List speakers

GET/events/{eventId}/speakers

Lists an event's speakers as its page shows them, with the sessions they speak at. Their email address only with people:read.

Scopes: program:read

Parameters

path

eventIdstring (uuid)required
The event's id.

query

cursorstring
Where the page starts: nextCursor from the page before, exactly as it was returned. Leave out for the first page.
limitinteger (int32)
How many on a page, up to 500.
Default: 100

Answers

200 A page of speakers. SpeakerList
Fields
- dataSpeaker[]
  The items of this page.
  Show the fields
  - speakerIdstring (uuid)
    The speaker's id.
  - eventIdstring (uuid)
    The event's id.
  - namestring
    Their name.
  - jobTitlestring or null
    Their job.
  - companystring or null
    Their company.
  - biostring or null
    About them, in Markdown.
  - photoUrlstring or null
    Their photo.
  - emailstring or null
    Their address: only with people:read.
  - linksstring (uri)[]
    Their links.
  - sessionIdsstring (uuid)[]
    The sessions they speak at.
  - sortOrderinteger (int32)
    Their place on the speakers page.
- nextCursorstring or null
  The cursor for the next page; null on the last page. Pass it as cursor, with the same filters.
- hasMoreboolean
  Whether there is another page.
400 invalidCursor.
401 invalidKey, keyExpired, keyRevoked.
403 missingScope.
404 eventNotFound.
429 rateLimited.

Refusals

invalidKey keyExpired keyRevoked rateLimited missingScope eventNotFound invalidCursor

Request

curl "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/speakers?limit=2" \
  -H "Authorization: Bearer $ATTENDBEACON_KEY"

const response = await fetch("https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/speakers?limit=2", {
  headers: {
    Authorization: `Bearer ${process.env.ATTENDBEACON_KEY}`
  }
});
if (!response.ok) throw new Error((await response.json()).detail);
const data = await response.json();

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("ATTENDBEACON_KEY"));

using var request = new HttpRequestMessage(HttpMethod.Get, "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/speakers?limit=2");

using var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();

import os
import requests

response = requests.get(
    "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/speakers", params={"limit": 2},
    headers={
        "Authorization": f"Bearer {os.environ['ATTENDBEACON_KEY']}"
    }
)
response.raise_for_status()
data = response.json()

$headers = @{
    Authorization = "Bearer $env:ATTENDBEACON_KEY"
}

$data = Invoke-RestMethod -Method Get -Uri "https://attendbeacon.com/api/v1/events/b3ac0000-0000-4000-8000-000000000001/speakers?limit=2" -Headers $headers

200 Example answer

JSON

{
  "data": [
    {
      "speakerId": "b3ac0003-0000-4000-8000-000000000000",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "name": "Ada Verhoeven",
      "jobTitle": "Principal Engineer",
      "company": "Northwind Cloud",
      "bio": "Ada builds the platforms other engineers build on, and writes about what breaks.",
      "photoUrl": "/media/f0de0000000040008000000000000001/b3ac00fa000040008000000000000000.jpg",
      "email": "ada@speakers.example",
      "links": [],
      "sessionIds": [
        "b3ac0004-0000-4000-8000-000000000002",
        "b3ac0004-0000-4000-8000-000000000015"
      ],
      "sortOrder": 0
    },
    {
      "speakerId": "b3ac0003-0000-4000-8000-000000000001",
      "eventId": "b3ac0000-0000-4000-8000-000000000001",
      "name": "Malik Osei",
      "jobTitle": "VP Product",
      "company": "Contoso",
      "bio": "Malik has shipped products in four countries and still reads every support ticket.",
      "photoUrl": "/media/f0de0000000040008000000000000001/b3ac00fa000040008000000000000001.jpg",
      "email": "malik@speakers.example",
      "links": [],
      "sessionIds": [
        "b3ac0004-0000-4000-8000-000000000010",
        "b3ac0004-0000-4000-8000-000000000003"
      ],
      "sortOrder": 1
    }
  ],
  "nextCursor": "YzE6MDAwMDAwMTAwMDAwMDAwMDAwMXxiM2FjMDAwMzAwMDA0MDAwODAwMDAwMDAwMDAwMDAwMQ",
  "hasMore": true
}

400 invalidCursor.

JSON

{
  "type": "https://attendbeacon.com/developers/errors#invalidCursor",
  "title": "The cursor is not valid",
  "status": 400,
  "detail": "Pass nextCursor exactly as a list returned it, with the same filters.",
  "instance": "/api/v1/events/b3ac0000-0000-4000-8000-000000000001/speakers",
  "code": "invalidCursor",
  "traceId": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "error": "Pass nextCursor exactly as a list returned it, with the same filters."
}

The guides and this site are in your language. The API reference's own descriptions are in English, as the API itself speaks.

#List sessions

Parameters

Answers

Refusals

#Add a session Changes data

Parameters

Body NewSession

Answers

Refusals

#Get a session

Parameters

Answers

Refusals

#Change a session Changes data

Parameters

Body SessionPatch

Answers

Refusals

#List rooms

Parameters

Answers

Refusals

#List tracks

Parameters

Answers

Refusals

#List speakers

Parameters

Answers

Refusals

List sessions

Add a session Changes data

Get a session

Change a session Changes data

List rooms

List tracks

List speakers