Slack

Send, update, delete messages, add reactions in Slack or trigger workflows from Slack events

Slack is a business communication platform that offers teams a unified place for messaging, tools, and files.

With Slack, you can:

  • Automate agent notifications: Send real-time updates from your Sim agents to any Slack channel
  • Create webhook endpoints: Configure Slack bots as webhooks to trigger Sim workflows from Slack activities
  • Enhance agent workflows: Integrate Slack messaging into your agents to deliver results, alerts, and status updates
  • Create and share Slack canvases: Programmatically generate collaborative documents (canvases) in Slack channels
  • Read messages from channels: Retrieve and process recent messages from any Slack channel for monitoring or workflow triggers
  • Manage bot messages: Update, delete, and add reactions to messages sent by your bot

In Sim, the Slack integration enables your agents to programmatically interact with Slack with full message management capabilities as part of their workflows:

  • Send messages: Agents can send formatted messages to any Slack channel or user, supporting Slack's mrkdwn syntax for rich formatting
  • Update messages: Edit previously sent bot messages to correct information or provide status updates
  • Delete messages: Remove bot messages when they're no longer needed or contain errors
  • Add reactions: Express sentiment or acknowledgment by adding emoji reactions to any message
  • Create canvases: Create and share Slack canvases (collaborative documents) directly in channels, enabling richer content sharing and documentation
  • Read messages: Read recent messages from channels, allowing for monitoring, reporting, or triggering further actions based on channel activity
  • Download files: Retrieve files shared in Slack channels for processing or archival

This allows for powerful automation scenarios such as sending notifications with dynamic updates, managing conversational flows with editable status messages, acknowledging important messages with reactions, and maintaining clean channels by removing outdated bot messages. Your agents can deliver timely information, update messages as workflows progress, create collaborative documents, or alert team members when attention is needed. This integration bridges the gap between your AI workflows and your team's communication, ensuring everyone stays informed with accurate, up-to-date information. By connecting Sim with Slack, you can create agents that keep your team updated with relevant information at the right time, enhance collaboration by sharing and updating insights automatically, and reduce the need for manual status updates—all while leveraging your existing Slack workspace where your team already communicates.

Getting Started

To connect Slack to your Sim workflows:

  1. Sign up or log in at sim.ai
  2. Create a new workflow or open an existing one
  3. Drag a Slack block onto your canvas
  4. Click the credential selector and choose Connect
  5. Authorize Sim to access your Slack workspace
  6. Select your target channel or user

Once connected, you can use any of the Slack operations listed below.

AI-Generated Content

Sim workflows may use AI models to generate messages and responses sent to Slack. AI-generated content may be inaccurate or contain errors. Always review automated outputs, especially for critical communications.

Need Help?

If you encounter issues with the Slack integration, contact us at help@sim.ai

Usage Instructions

Integrate Slack into the workflow. Can send, update, and delete messages, create canvases, read messages, and add reactions. Requires Bot Token instead of OAuth in advanced mode. Can be used in trigger mode to trigger a workflow when a message is sent to a channel.

Tools

slack_message

Send messages to Slack channels or direct messages. Supports Slack mrkdwn formatting.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
destinationTypestringNoDestination type: channel or dm
botTokenstringNoBot token for Custom Bot
channelstringNoSlack channel ID (e.g., C1234567890)
dmUserIdstringNoSlack user ID for direct messages (e.g., U1234567890)
textstringYesMessage text to send (supports Slack mrkdwn formatting)
thread_tsstringNoThread timestamp to reply to (creates thread reply)
filesfile[]NoFiles to attach to the message

Output

ParameterTypeDescription
messageobjectComplete message object with all properties returned by Slack
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit
tsstringMessage timestamp
channelstringChannel ID where message was sent
fileCountnumberNumber of files uploaded (when files are attached)
filesfile[]Files attached to the message

slack_canvas

Create and share Slack canvases in channels. Canvases are collaborative documents within Slack.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesSlack channel ID (e.g., C1234567890)
titlestringYesTitle of the canvas
contentstringYesCanvas content in markdown format
document_contentobjectNoStructured canvas document content

Output

ParameterTypeDescription
canvas_idstringUnique canvas identifier
channelstringChannel where canvas was created
titlestringCanvas title

slack_message_reader

Read the latest messages from Slack channels. Retrieve conversation history with filtering options.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
destinationTypestringNoDestination type: channel or dm
botTokenstringNoBot token for Custom Bot
channelstringNoSlack channel ID to read messages from (e.g., C1234567890)
dmUserIdstringNoSlack user ID for DM conversation (e.g., U1234567890)
limitnumberNoNumber of messages to retrieve (default: 10, max: 15)
oldeststringNoStart of time range (timestamp)
lateststringNoEnd of time range (timestamp)

Output

ParameterTypeDescription
messagesarrayArray of message objects from the channel
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit

slack_get_message

Retrieve a specific message by its timestamp. Useful for getting a thread parent message.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesSlack channel ID (e.g., C1234567890)
timestampstringYesMessage timestamp to retrieve (e.g., 1405894322.002768)

Output

ParameterTypeDescription
messageobjectThe retrieved message object
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit

slack_get_thread

Retrieve an entire thread including the parent message and all replies. Useful for getting full conversation context.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesSlack channel ID (e.g., C1234567890)
threadTsstringYesThread timestamp (thread_ts) to retrieve (e.g., 1405894322.002768)
limitnumberNoMaximum number of messages to return (default: 100, max: 200)

Output

ParameterTypeDescription
parentMessageobjectThe thread parent message
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit
repliesarrayArray of reply messages in the thread (excluding the parent)
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit
messagesarrayAll messages in the thread (parent + replies) in chronological order
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit
replyCountnumberNumber of replies returned in this response
hasMorebooleanWhether there are more messages in the thread (pagination needed)

slack_list_channels

List all channels in a Slack workspace. Returns public and private channels the bot has access to.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
includePrivatebooleanNoInclude private channels the bot is a member of (default: true)
excludeArchivedbooleanNoExclude archived channels (default: true)
limitnumberNoMaximum number of channels to return (default: 100, max: 200)

Output

ParameterTypeDescription
channelsarrayArray of channel objects from the workspace
idstringChannel ID (e.g., C1234567890)
namestringChannel name without # prefix
is_channelbooleanWhether this is a channel
is_privatebooleanWhether channel is private
is_archivedbooleanWhether channel is archived
is_generalbooleanWhether this is the general channel
is_memberbooleanWhether the bot/user is a member
is_sharedbooleanWhether channel is shared across workspaces
is_ext_sharedbooleanWhether channel is externally shared
is_org_sharedbooleanWhether channel is org-wide shared
num_membersnumberNumber of members in the channel
topicstringChannel topic
purposestringChannel purpose/description
creatednumberUnix timestamp when channel was created
creatorstringUser ID of channel creator
updatednumberUnix timestamp of last update
idsarrayArray of channel IDs for easy access
namesarrayArray of channel names for easy access
countnumberTotal number of channels returned

slack_list_members

List all members (user IDs) in a Slack channel. Use with Get User Info to resolve IDs to names.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesChannel ID to list members from
limitnumberNoMaximum number of members to return (default: 100, max: 200)

Output

ParameterTypeDescription
membersarrayArray of user IDs who are members of the channel (e.g., U1234567890)
countnumberTotal number of members returned

slack_list_users

List all users in a Slack workspace. Returns user profiles with names and avatars.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
includeDeletedbooleanNoInclude deactivated/deleted users (default: false)
limitnumberNoMaximum number of users to return (default: 100, max: 200)

Output

ParameterTypeDescription
usersarrayArray of user objects from the workspace
idstringUser ID (e.g., U1234567890)
namestringUsername (handle)
real_namestringFull real name
display_namestringDisplay name shown in Slack
is_botbooleanWhether the user is a bot
is_adminbooleanWhether the user is a workspace admin
is_ownerbooleanWhether the user is the workspace owner
deletedbooleanWhether the user is deactivated
timezonestringUser timezone identifier
avatarstringURL to user avatar image
status_textstringCustom status text
status_emojistringCustom status emoji
idsarrayArray of user IDs for easy access
namesarrayArray of usernames for easy access
countnumberTotal number of users returned

slack_get_user

Get detailed information about a specific Slack user by their user ID.

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
userIdstringYesUser ID to look up (e.g., U1234567890)

Output

ParameterTypeDescription
userobjectDetailed user information
idstringUser ID (e.g., U1234567890)
team_idstringWorkspace/team ID
namestringUsername (handle)
real_namestringFull real name
display_namestringDisplay name shown in Slack
first_namestringFirst name
last_namestringLast name
titlestringJob title
phonestringPhone number
skypestringSkype handle
is_botbooleanWhether the user is a bot
is_adminbooleanWhether the user is a workspace admin
is_ownerbooleanWhether the user is the workspace owner
is_primary_ownerbooleanWhether the user is the primary owner
is_restrictedbooleanWhether the user is a guest (restricted)
is_ultra_restrictedbooleanWhether the user is a single-channel guest
is_app_userbooleanWhether user is an app user
is_strangerbooleanWhether user is from different workspace
deletedbooleanWhether the user is deactivated
colorstringUser color for display
timezonestringTimezone identifier (e.g., America/Los_Angeles)
timezone_labelstringHuman-readable timezone label
timezone_offsetnumberTimezone offset in seconds from UTC
avatarstringURL to user avatar image
avatar_24stringURL to 24px avatar
avatar_48stringURL to 48px avatar
avatar_72stringURL to 72px avatar
avatar_192stringURL to 192px avatar
avatar_512stringURL to 512px avatar
status_textstringCustom status text
status_emojistringCustom status emoji
status_expirationnumberUnix timestamp when status expires
updatednumberUnix timestamp of last profile update
has_2fabooleanWhether two-factor auth is enabled

slack_download

Download a file from Slack

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
fileIdstringYesThe ID of the file to download
fileNamestringNoOptional filename override

Output

ParameterTypeDescription
filefileDownloaded file stored in execution files

slack_update_message

Update a message previously sent by the bot in Slack

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesChannel ID where the message was posted (e.g., C1234567890)
timestampstringYesTimestamp of the message to update (e.g., 1405894322.002768)
textstringYesNew message text (supports Slack mrkdwn formatting)

Output

ParameterTypeDescription
messageobjectComplete updated message object with all properties returned by Slack
typestringMessage type (usually "message")
tsstringMessage timestamp (unique identifier)
textstringMessage text content
userstringUser ID who sent the message
bot_idstringBot ID if sent by a bot
usernamestringDisplay username
channelstringChannel ID
teamstringTeam/workspace ID
thread_tsstringParent message timestamp (for threaded replies)
parent_user_idstringUser ID of thread parent message author
reply_countnumberTotal number of replies in thread
reply_users_countnumberNumber of unique users who replied
latest_replystringTimestamp of most recent reply
subscribedbooleanWhether user is subscribed to thread
last_readstringTimestamp of last read message
unread_countnumberNumber of unread messages in thread
subtypestringMessage subtype (bot_message, file_share, etc.)
is_starredbooleanWhether message is starred by user
pinned_toarrayChannel IDs where message is pinned
permalinkstringPermanent URL to the message
reactionsarrayReactions on this message
namestringEmoji name (without colons)
countnumberNumber of times this reaction was added
usersarrayArray of user IDs who reacted
filesarrayFiles attached to the message
idstringUnique file identifier
namestringFile name
mimetypestringMIME type of the file
sizenumberFile size in bytes
url_privatestringPrivate download URL (requires auth)
permalinkstringPermanent link to the file
modestringFile mode (hosted, external, etc.)
attachmentsarrayLegacy attachments on the message
idnumberAttachment ID
fallbackstringPlain text summary
textstringMain attachment text
pretextstringText shown before attachment
colorstringColor bar hex code or preset
author_namestringAuthor display name
author_linkstringAuthor link URL
author_iconstringAuthor icon URL
titlestringAttachment title
title_linkstringTitle link URL
image_urlstringImage URL
thumb_urlstringThumbnail URL
footerstringFooter text
footer_iconstringFooter icon URL
tsstringTimestamp shown in footer
blocksarrayBlock Kit blocks in the message
typestringBlock type (section, divider, image, actions, etc.)
block_idstringUnique block identifier
editedobjectEdit information if message was edited
userstringUser ID who edited the message
tsstringTimestamp of the edit
contentstringSuccess message
metadataobjectUpdated message metadata
channelstringChannel ID
timestampstringMessage timestamp
textstringUpdated message text

slack_delete_message

Delete a message previously sent by the bot in Slack

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesChannel ID where the message was posted (e.g., C1234567890)
timestampstringYesTimestamp of the message to delete (e.g., 1405894322.002768)

Output

ParameterTypeDescription
contentstringSuccess message
metadataobjectDeleted message metadata
channelstringChannel ID
timestampstringMessage timestamp

slack_add_reaction

Add an emoji reaction to a Slack message

Input

ParameterTypeRequiredDescription
authMethodstringNoAuthentication method: oauth or bot_token
botTokenstringNoBot token for Custom Bot
channelstringYesChannel ID where the message was posted (e.g., C1234567890)
timestampstringYesTimestamp of the message to react to (e.g., 1405894322.002768)
namestringYesName of the emoji reaction (without colons, e.g., thumbsup, heart, eyes)

Output

ParameterTypeDescription
contentstringSuccess message
metadataobjectReaction metadata
channelstringChannel ID
timestampstringMessage timestamp
reactionstringEmoji reaction name

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