Go to Slack


You're not signed into any teams. Sign in to test authentication.

As part of the Conversations API, this method's required scopes depend on the type of channel-like object you're working with. For classic Slack apps, a corresponding channels: scope is required when working with public channels, groups: for private channels, also the same rules are applied for im: and mpim:. For workspace apps, a conversations: scope is all that's needed.

This Conversations API method returns an entire thread (a message plus all the messages in reply to it), while conversations.history method returns only parent messages.

The scopes and token types required to use this method vary by conversation type.

Bot user tokens may use this method for direct message and multi-party direct message conversations but lack sufficient permissions to use this method on public and private channels.

To use conversations.replies with public or private channel threads, use a user token with channels:history or groups:history scopes.


Argument Example Required Description
token xxxx-xxxxxxxxx-xxxx Required

Authentication token bearing required scopes.

channel C1234567890 Required

Conversation ID to fetch thread from.

ts 1234567890.123456 Required

Unique identifier of a thread's parent message.

cursor dXNlcjpVMDYxTkZUVDI= Optional

Paginate through collections of data by setting the cursor parameter to a next_cursor attribute returned by a previous request's response_metadata. Default value fetches the first "page" of the collection. See pagination for more detail.

inclusive true Optional, default=0

Include messages with latest or oldest timestamp in results only when either timestamp is specified.

latest 1234567890.123456 Optional, default=now

End of time range of messages to include in results.

limit 20 Optional, default=10

The maximum number of items to return. Fewer than the requested number of items may be returned, even if the end of the users list hasn't been reached.

oldest 1234567890.123456 Optional, default=0

Start of time range of messages to include in results.

Present arguments as parameters in application/x-www-form-urlencoded querystring or POST body. This method does not currently accept application/json.

The channel and ts arguments are always required. ts must be the timestamp of an existing message with 0 or more replies. If there are no replies then just the single message referenced by ts will return - it is just an ordinary message.


Typical success response

    "messages": [
            "type": "message",
            "user": "U061F7AUR",
            "text": "island",
            "thread_ts": "1482960137.003543",
            "reply_count": 3,
            "replies": [
                    "user": "U061F7AUR",
                    "ts": "1483037603.017503"
                    "user": "U061F7AUR",
                    "ts": "1483051909.018632"
                    "user": "U061F7AUR",
                    "ts": "1483125339.020269"
            "subscribed": true,
            "last_read": "1484678597.521003",
            "unread_count": 0,
            "ts": "1482960137.003543"
            "type": "message",
            "user": "U061F7AUR",
            "text": "one island",
            "thread_ts": "1482960137.003543",
            "parent_user_id": "U061F7AUR",
            "ts": "1483037603.017503"
            "type": "message",
            "user": "U061F7AUR",
            "text": "two island",
            "thread_ts": "1482960137.003543",
            "parent_user_id": "U061F7AUR",
            "ts": "1483051909.018632"
            "type": "message",
            "user": "U061F7AUR",
            "text": "three for the land",
            "thread_ts": "1482960137.003543",
            "parent_user_id": "U061F7AUR",
            "ts": "1483125339.020269"
    "has_more": true,
    "ok": true,
    "response_metadata": {
        "next_cursor": "bmV4dF90czoxNDg0Njc4MjkwNTE3MDkx"

Typical error response

    "ok": false,
    "error": "thread_not_found"


This method uses cursor-based pagination to make it easier to incrementally collect information. To begin pagination, specify a limit value under 1000. We recommend no more than 200 results at a time.

Responses will include a top-level response_metadata attribute containing a next_cursor value. By using this value as a cursor parameter in a subsequent request, along with limit, you may navigate through the collection page by virtual page.

For apps created after August 7, 2018, this method defaults to cursor-based pagination. Use the limit and cursor parameters to guarantee your passage into the paradise of cursored pagination.

See pagination for more information.

Pagination by time

You can also get messages of certain time range by specifying either or combination of both latest and oldest.

If a message has the same timestamp as latest or oldest it will not be included in the list. This allows a client to fetch all messages in a hole in channel history, by calling conversations.replies with latest set to the oldest message they have after the hole, and oldest to the latest message they have before the hole. However, you can cover the hole and include the exact moment of the specified timestamp, set inclusive to true. The inclusive is ignored when latest or oldest is not specified.


This table lists the expected errors that this method could return. However, other errors can be returned in the case where the service is down or other unexpected factors affect processing. Callers should always check the value of the ok params in the response.

Error Description

Value for channel was missing or invalid.


Value for ts was missing or invalid.


The calling token is not granted the necessary scopes to complete this operation.


Value passed for cursor was not valid or is no longer valid.


Value passed for latest was invalid


Value passed for oldest was invalid


No authentication token provided.


Some aspect of authentication cannot be validated. Either the provided token is invalid or the request originates from an IP address disallowed from making the request.


Authentication token is for a deleted user or workspace.


Authentication token is for a deleted user or workspace or the app has been removed.


The workspace token used in this request does not have the permissions necessary to complete the request. Make sure your app is a member of the conversation it's attempting to post a message to.


The workspace is undergoing an enterprise migration and will not be available until migration is complete.


The method was passed an argument whose name falls outside the bounds of accepted or expected values. This includes very long names and names with non-alphanumeric characters other than _. If you get this error, it is typically an indication that you have made a very malformed API call.


The method was passed a PHP-style array argument (e.g. with a name like foo[7]). These are never valid with the Slack API.


The method was called via a POST request, but the charset specified in the Content-Type header was invalid. Valid charset names are: utf-8 iso-8859-1.


The method was called via a POST request with Content-Type application/x-www-form-urlencoded or multipart/form-data, but the form data was either missing or syntactically invalid.


The method was called via a POST request, but the specified Content-Type was invalid. Valid types are: application/x-www-form-urlencoded multipart/form-data text/plain.


The method was called via a POST request and included a data payload, but the request did not include a Content-Type header.


The workspace associated with your request is currently undergoing migration to an Enterprise Organization. Web API and other platform operations will be intermittently unavailable until the transition is complete.


The method was called via a POST request, but the POST data was either missing or truncated.


The server could not complete your operation(s) without encountering a catastrophic error. It's possible some aspect of the operation succeeded before the error was raised.


This table lists the expected warnings that this method will return. However, other warnings can be returned in the case where the service is experiencing unexpected trouble.

Warning Description

The method was called via a POST request, and recommended practice for the specified Content-Type is to include a charset parameter. However, no charset was present. Specifically, non-form-data content types (e.g. text/plain) are the ones for which charset is recommended.


The method was called via a POST request, and the specified Content-Type is not defined to understand the charset parameter. However, charset was in fact present. Specifically, form-data content types (e.g. multipart/form-data) are the ones for which charset is superfluous.

Argument Value
token Required Generate tokens to test with here.
channel Required
ts Required
cursor Optional
inclusive Optional, default=0
latest Optional, default=now
limit Optional, default=10
oldest Optional, default=0
Extra args