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Announcing StackOne Defender: leading open-source prompt injection guard for your agent Read More

Connectors Slack
Live 38 Actions

Slack integration for AI agents

Connect your AI agent to 38 production-ready Slack actions via MCP, A2A, or SDK — with managed agent tool auth, optimized execution, and built-in security.

StackOne
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Slack AI agent actions

38 production-ready actions for your agent to do more on Slack.

38 Actions
List Conversations - List all conversations (channels, groups, DMs) from Slack and find channel IDs by name
Get Conversation - Get details of a specific conversation
Create Conversation - Create a new conversation (channel)
Join Conversation - Join an existing conversation (use before sending messages to new channels)
Leave Conversation - Leave a conversation
Rename Conversation - Rename a conversation
Invite Users To Conversation - Invite users to a conversation
Invite Shared Conversation - Send an invitation to a Slack Connect channel
Remove User From Conversation - Remove a user from a conversation
List Conversation Members - List all members of a conversation
Open Conversation - Open or resume a direct message or multi-person direct message
List Thread Replies - Retrieve a thread of messages posted to a conversation
List Slack Connect Invites - List shared channel invites that have been generated or received
List Files - List files for a team, channel, or user
Get File - Get detailed information about a file
Delete File - Delete a file from Slack
Get File Upload URL - Get an external URL to upload a file to Slack
Complete File Upload - Complete an external file upload and optionally share to channels
Share File Public URL - Create a public URL for a file
Revoke File Public URL - Revoke public sharing for a file
List Messages - List messages from a conversation
Send Message - Send a message to a channel or conversation
Update Message - Update an existing message
Delete Message - Delete a message
Send Ephemeral Message - Send a private temporary message visible only to a specific user in a channel (use for private welcome notes, warnings, or notifications)
Schedule Message - Schedule a message to be sent at a specific time
List Scheduled Messages - List all scheduled messages
Delete Scheduled Message - Delete a scheduled message
Get Message Permalink - Get a permanent link to a message
List Users - List all users in the Slack workspace and find user IDs by name or email
List User Conversations - List conversations a user is a member of
Get User - Get details of a specific user
Get User By Email - Get user details by email address (use to find user ID from email)
Lookup Discoverable Contact - Check if an email is discoverable on Slack
Get User Profile - Retrieve a user's profile information including status text and emoji, title, phone, and custom profile fields
Set User Profile - Update a user's profile information
Get User Presence - Get the presence of a user
Set User Presence - Manually set the user's presence

Do More, Build Less.

Integration Infrastructure for Slack AI Agents.

Multiple Interfaces

Access integrations via API, AI SDKs, MCP & A2A.

Slack MCP server
Managed Authentication

Pre-built authentication UI.

Agent auth
Falcon Engine

Every Slack action runs on Falcon.

Agent Execution Engine
StackOne Defender
StackOne Defender Meta PG v1 Meta PG v2 DeBERTa 88.7% 67.5% 63.1% 56.9% Detection accuracy

88.7% prompt injection detection.

Prompt injection defense

"What impressed us most about StackOne is its ambition and clarity. They're creating infrastructure that modern software and the entire AI agent ecosystem can rely on. The depth of secure integrations, the pace of delivery, and the team's foresight into AI's future uniquely position StackOne to redefine this category."

Luna Schmid, Partner at GV

"We've been impressed by how quickly and deeply StackOne integrates with complex enterprise systems -- and now, with their focus on agent-to-agent interoperability, they're unlocking even more powerful use cases for customers. StackOne delivers all of the above in a universal layer -- without compromise."

Barbry McGann, SVP at Workday Ventures

G2 - High Performer G2 - Easiest To Do Business With G2 - Users Love Us G2 - Users Most Likely To Recommend G2 - Easiest Admin

Product teams love building agent integrations with StackOne.

G2

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Slack agent integration resources

Agentic Context Engineering: Why AI Agents Kill Their Own Context Windows

AI agents exceed their context windows without knowing it. Six failure patterns and seven survival architectures for agentic context engineering.

15 min

MCP Code Mode: Keeping Tool Responses Out of Agent Context

Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.

11 min

Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery

Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.

10 min

Put your AI agents to work

All the tools you need to build and scale AI agent integrations, with best-in-class connectivity, execution, and security.