---
title: "Fetches a list of the threads in a room."
method: GET
path: "/_matrix/client/v1/rooms/{roomId}/threads"
tags: ["Threads"]
---

# Fetches a list of the threads in a room.

`GET /_matrix/client/v1/rooms/{roomId}/threads`

## Request

- Base URL: `https://matrix.org`
- URL: `https://matrix.org/_matrix/client/v1/rooms/{roomId}/threads`
- Auth: one of:
  - API key in query parameter `access_token`
  - HTTP bearer
- TypeScript: <https://skmtc.dev/matrix/apis/matrix-client-server-api/docs/_matrix/client/v1/rooms/:roomId/threads/get.ts> (a function with typed inputs; its response is checked against the schema)

This API is used to paginate through the list of the thread roots in a given room. 

Optionally, the returned list may be filtered according to whether the requesting
user has participated in the thread.

## Path parameters

- `roomId` string, required

## Query parameters

- `include` 'all' | 'participated'
- `limit` integer
- `from` string

## Response `200`

A portion of the available thread roots in the room, based on the filter criteria.

- object
  - `chunk` object[], required: The thread roots, ordered by the `latest_event` in each event's aggregated children. All events returned include bundled [aggregations](https://spec.matrix.org/v1.19/client-server-api/#aggregations-of-child-events). If the thread root event was sent by an [ignored user](https://spec.matrix.org/v1.19/client-server-api/#ignoring-users), the event is returned redacted to the caller. This is to simulate the same behaviour of a client doing aggregation locally on the thread.
    - `content` object, required: The body of this event, as created by the client which sent it.
    - `event_id` string, mx-event-id, required: The globally unique identifier for this event.
    - `origin_server_ts` integer, required: Timestamp (in milliseconds since the unix epoch) on originating homeserver when this event was sent.
    - `sender` string, mx-user-id, required: Contains the fully-qualified ID of the user who sent this event.
    - `state_key` string: Present if, and only if, this event is a *state* event. The key making this piece of state unique in the room. Note that it is often an empty string. State keys starting with an `@` are reserved for referencing user IDs, such as room members. With the exception of a few events, state events set with a given user's ID as the state key MUST only be set by that user.
    - `type` string, required: The type of the event.
    - `unsigned` object: Contains optional extra information about the event.
      - `age` integer: The time in milliseconds that has elapsed since the event was sent. This field is generated by the local homeserver, and may be incorrect if the local time on at least one of the two servers is out of sync, which can cause the age to either be negative or greater than it actually is.
      - `membership` string: The room membership of the user making the request, at the time of the event. This property is the value of the `membership` property of the requesting user's [`m.room.member`](https://spec.matrix.org/v1.19/client-server-api#mroommember) state at the point of the event, including any changes caused by the event. If the user had yet to join the room at the time of the event (i.e, they have no `m.room.member` state), this property is set to `leave`. Homeservers SHOULD populate this property wherever practical, but they MAY omit it if necessary (for example, if calculating the value is expensive, servers might choose to only implement it in encrypted rooms). The property is *not* normally populated in events pushed to application services via the application service transaction API (where there is no clear definition of "requesting user").
      - `prev_content` object: The `content` of the previous state event that was replaced by this event. This field is generated by the local homeserver, and is only returned if the event is a state event, and the client has permission to see the previous event.
      - `redacted_because` object: The event that redacted this event, if any.
      - `replaces_state` string, mx-event-id: The event ID of the state event replaced by this event. This field is generated by the local homeserver, and is only returned if the event is a state event. Unlike `prev_content`, this field is included regardless of history visibility.
      - `transaction_id` string: The client-supplied [transaction ID](https://spec.matrix.org/v1.19/client-server-api/#transaction-identifiers), for example, provided via `PUT /_matrix/client/v3/rooms/{roomId}/send/{eventType}/{txnId}`, if the client being given the event is the same one which sent it.
    - `room_id` string, mx-room-id, required: The ID of the room associated with this event.
  - `next_batch` string: A token to supply to `from` to keep paginating the responses. Not present when there are no further results.

## Other responses

- `400`: The request was invalid in some way. A meaningful `errcode` and description error text will be returned. Example reasons for rejection are: - The `from` token is unknown to the server.
- `403`: The user cannot view or peek on the room. A meaningful `errcode` and description error text will be returned. Example reasons for rejection are: - The room is not set up for peeking. - The user has been banned from the room. - The room does not exist.
- `429`: This request was rate-limited.

---

[API](https://skmtc.dev/matrix/apis/matrix-client-server-api.md) - [All operations](https://skmtc.dev/matrix/apis/matrix-client-server-api/llms.txt) - [OpenAPI document](https://skmtc.dev/matrix/apis/matrix-client-server-api/revisions/c7fe4072c681?raw)