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Slack MCP Server

by AVIMBU

Slack Model Context Protocol Server

This is a connector to allow Claude Desktop (or any MCP client) to interact with your Slack workspace to post messages and query a list of all users.

Local Development

In order to run this client locally, add the following configuration to your Claude Desktop MCP Server config file:

{ "mcpServers": { "mcp-slack-local": { "command": "node", "args": ["/path/to/project/dist/index.js"], <---- replace this with your project path "env": { "SLACK_BOT_USER_OAUTH_TOKEN": "test-bot-token", "SLACK_TEAM_ID": "test-team-id" } }, } }

After this, you should be able to test this implementation in your Claude Desktop App using example prompts like:

  • "Can you list all users of my Slack team?"

  • "Can you send a welcome message to my Slack Channel with the ID <channel id>?"

Running the server locally:

node dist/index.js

With the build in another terminal

npm run watch

Slack Permission Scopes

The following permissions are already implemented:

Permission

Description

Implemented

app_configurations:read

Read app configuration info via App Manifest APIs

app_configurations:write

Write app configuration info and create apps via App Manifest APIs

app_mentions:read

View messages that directly mention @your_slack_app in conversations that the app is in

assistant:write

Allow your slack app to act as an AI Assistant

bookmarks:read

List bookmarks

bookmarks:write

Create, edit, and remove bookmarks

calls:read

View information about ongoing and past calls

calls:write

Start and manage calls in a workspace

canvases:read

your slack app will be able to access contents of canvases created inside Slack.

canvases:write

your slack app will be able to create, edit and remove canvases.

channels:history

View messages and other content in public channels that your slack app has been added to

channels:join

Join public channels in a workspace

channels:manage

Manage public channels that your slack app has been added to and create new ones

channels:read

View basic information about public channels in a workspace

channels:write.invites

Invite members to public channels

channels:write.topic

Set the description of public channels

chat:write

Post messages in approved channels & conversations

chat:write.customize

Send messages as @your_slack_app with a customized username and avatar

chat:write.public

Send messages to channels @your_slack_app isn't a member of

commands

Add shortcuts and/or slash commands that people can use

conversations.connect:manage

Allows your slack app to manage Slack Connect channels

conversations.connect:read

Receive Slack Connect invite events sent to the channels your slack app is in

conversations.connect:write

Create Slack Connect invitations for channels that your slack app has been added to, and accept invitations sent to your slack app

datastore:read

View and see data from Slack App Datastore

datastore:write

Write data to Slack App Datastore

dnd:read

View Do Not Disturb settings for people in a workspace

emoji:read

View custom emoji in a workspace

files:read

View files shared in channels and conversations that your slack app has been added to

files:write

Upload, edit, and delete files as your slack app

groups:history

View messages and other content in private channels that your slack app has been added to

groups:read

View basic information about private channels that your slack app has been added to

groups:write

Manage private channels that your slack app has been added to and create new ones

groups:write.invites

Invite members to private channels

groups:write.topic

Set the description of private channels

im:history

View messages and other content in direct messages that your slack app has been added to

im:read

View basic information about direct messages that your slack app has been added to

im:write

Start direct messages with people

im:write.topic

Set the description in direct messages

incoming-webhook

Create one-way webhooks to post messages to a specific channel

links.embed:write

Embed video player URLs in messages and app surfaces

links:read

View URLs in messages

links:write

Show previews of URLs in messages

metadata.message:read

Allows your slack app to read message metadata in channels that your slack app has been added to

mpim:history

View messages and other content in group direct messages that your slack app has been added to

mpim:read

View basic information about group direct messages that your slack app has been added to

mpim:write

Start group direct messages with people

mpim:write.topic

Set the description in group direct messages

none

Execute methods without needing a scope

pins:read

View pinned content in channels and conversations that your slack app has been added to

pins:write

Add and remove pinned messages and files

reactions:read

View emoji reactions and their associated content in channels and conversations that your slack app has been added to

reactions:write

Add and edit emoji reactions

reminders:read

View reminders created by your slack app

reminders:write

Add, remove, or mark reminders as complete

remote_files:read

View remote files added by the app in a workspace

remote_files:share

Share remote files on a user's behalf

remote_files:write

Add, edit, and delete remote files on a user's behalf

search:read.files

Search a workspace's content in files

search:read.im

Search a workspace's content in direct messages

search:read.mpim

Search a workspace's content in group direct messages

search:read.private

Search a workspace's content in private channels

search:read.public

Search a workspace's content in public channels

team.billing:read

Allows your slack app to read the billing plan for workspaces your slack app has been installed to

team.preferences:read

Allows your slack app to read the preferences for workspaces your slack app has been installed to

team:read

View the name, email domain, and icon for workspaces your slack app is connected to

tokens.basic

Execute methods without needing a scope

triggers:read

Read new Platform triggers

triggers:write

Create new Platform triggers

usergroups:read

View user groups in a workspace

usergroups:write

Create and manage user groups

users.profile:read

View profile details about people in a workspace

users:read

View people in a workspace

users:read.email

View email addresses of people in a workspace

users:write

Set presence for your slack app

workflow.steps:execute

Add steps that people can use in Workflow Builder

workflows.templates:read

Read a workflow template

workflows.templates:write

Write a workflow template

Contact

If you have questions, feel free to contact us via AVIMBU.

Deploy Server
A
security – no known vulnerabilities
F
license - not found
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quality - confirmed to work

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

A connector enabling Claude Desktop or any MCP client to interact with Slack workspaces to post messages and query user lists.

  1. Local Development
    1. Slack Permission Scopes
      1. Contact

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