Communication · Integration

AI agents for Slack

Team chat where operations actually surface. AGNT connects to Slack so agents can read what happens there, reason about it, and act — with a receipt for every run.

Install Support First Responder → Get AGNT free

Support First Responder is a ready-made agent that works in Slack — free, and it runs on your machine.

Slack and AGNT, in brief

What it does	Lets an AGNT agent read from and act in Slack.
Connects with	One OAuth sign-in
AGNT node	slack-api, receive-slack-message
Runs when	A message hits a channel
Typical build time	Two minutes
Where data goes	Nowhere by default — AGNT runs on your machine and credentials never leave it.

What you can automate

Reacts when…

a message hits a channel
a keyword or mention fires
a reaction is added

Agents can…

post a rich channel message
DM a teammate
open a thread with findings

Teams use it for

pipe agent findings into the room where decisions happen
route escalations with full context
daily digests that replace standup theatre

Build it: the Slack workflow

Take the simplest useful version: a message hits a channel in Slack. Instead of a rule firing blindly, an agent reads the item in full, works out whether it matters and what it means, and then decides whether to post a rich channel message. Over a week that turns pipe agent findings into the room where decisions happen from something a person checks into something that reports to a person.

What follows is the whole workflow, not a sketch of it. Slack supplies the event, the agent supplies the reasoning, and the third node does the thing — or deliberately does nothing, which is a recorded outcome rather than a silent one.

The whole flow runs locally against your own Slack account. Deciding to take no action counts as an outcome and is recorded like any other.

Slack — read, decide, actpaste into a new workflow

{
  "id": "6db6bb1b-fc2b-4ae1-a27d-56b8dd421d6a",
  "name": "Slack — read, decide, act",
  "nodes": [
    {
      "id": "c847ac6d-50c4-42c5-adfa-9d1423d9a512",
      "text": "Watch Slack for activity",
      "x": 512,
      "y": 144,
      "isEditing": false,
      "type": "receive-slack-message",
      "icon": "clock",
      "category": "trigger",
      "isSelected": false,
      "parameters": {},
      "description": "Listen for incoming Slack messages in a specified channel and trigger the workflow when a new message is received.",
      "error": null,
      "isActive": false,
      "output": null,
      "outputs": {}
    },
    {
      "id": "5f7ed458-f941-4b5e-a17a-1af8d94d0d5c",
      "text": "Read it and decide",
      "x": 512,
      "y": 336,
      "isEditing": false,
      "type": "agnt-agent",
      "icon": "agnt",
      "category": "action",
      "isSelected": false,
      "parameters": {
        "instructions": "Read the Slack item and decide whether it warrants action. Explain your reasoning."
      },
      "description": "Judges the Slack item against criteria you wrote in plain language.",
      "error": null,
      "isActive": false,
      "output": null,
      "outputs": {}
    },
    {
      "id": "e0ba1e3a-cb96-40e5-a325-890110a73d92",
      "text": "Act in Slack",
      "x": 512,
      "y": 528,
      "isEditing": false,
      "type": "slack-api",
      "icon": "connect",
      "category": "action",
      "isSelected": false,
      "parameters": {
        "action": "SEND_MESSAGE"
      },
      "description": "Runs SEND_MESSAGE on your behalf.",
      "error": null,
      "isActive": false,
      "output": null,
      "outputs": {}
    }
  ],
  "edges": [
    {
      "id": "6531ca36-663a-4bda-a15f-68dcc41a3f7c",
      "start": {
        "id": "c847ac6d-50c4-42c5-adfa-9d1423d9a512",
        "type": "output"
      },
      "end": {
        "id": "5f7ed458-f941-4b5e-a17a-1af8d94d0d5c",
        "type": "input"
      },
      "startX": 800,
      "startY": 168,
      "endX": 512,
      "endY": 360
    },
    {
      "id": "d8eb1a87-9eec-405d-ab54-49f825950346",
      "start": {
        "id": "5f7ed458-f941-4b5e-a17a-1af8d94d0d5c",
        "type": "output"
      },
      "end": {
        "id": "e0ba1e3a-cb96-40e5-a325-890110a73d92",
        "type": "input"
      },
      "startX": 800,
      "startY": 360,
      "endX": 512,
      "endY": 552
    }
  ],
  "zoomLevel": 1,
  "canvasOffsetX": 0,
  "canvasOffsetY": 0,
  "isTinyNodeMode": false
}

Install Support First Responder — it runs on Slack

Support First Responder is a working agent that uses Slack. Installing it drops the whole workflow onto your canvas — connected, editable, and yours to change.

Install Support First Responder → Don’t have AGNT? Get it free

Runs on your own machine · See what it does

Where agent work becomes visible

Slack is usually the first place an agent should report, because a finding nobody sees may as well not exist. The useful pattern is not piping raw events into a channel but posting written conclusions — what happened, why it matters, what the agent did about it — into the room where the decision would be made anyway.

Approvals in the place people already are

Because Slack is where your team already lives, it is the natural home for approval gates. An agent can post what it intends to do with the context attached and wait for a human to accept before acting, which turns oversight into a message rather than another dashboard nobody opens.

Slack node reference

Interact with Slack to perform various operations such as sending messages, uploading files, managing reactions, and more.

What it can do: SEND_MESSAGE REPLY_TO_THREAD GET_CHANNELS GET_USERS UPLOAD_FILE ADD_REACTION

Full Slack API parameter reference

Parameter	Type	What it does
`action`required	string	The action to perform on Slack SEND_MESSAGE · REPLY_TO_THREAD · GET_CHANNELS · GET_USERS · UPLOAD_FILE · ADD_REACTION
`channelId`	string	The ID of the Slack channel only when action is SEND_MESSAGE or REPLY_TO_THREAD or UPLOAD_FILE or ADD_REACTION
`message`	string	The message to send only when action is SEND_MESSAGE or REPLY_TO_THREAD or UPLOAD_FILE
`threadTs`	string	The timestamp of the parent message to reply to (for REPLY_TO_THREAD) or react to (for ADD_REACTION) only when action is REPLY_TO_THREAD or ADD_REACTION
`emoji`	string	The emoji name without colons (e.g., 'thumbsup', 'heart') only when action is ADD_REACTION
`fileName`	string	The name of the file to upload only when action is UPLOAD_FILE
`fileData`	string	The base64-encoded file data to upload only when action is UPLOAD_FILE
`limit`	number	Maximum number of results to return (for GET_CHANNELS and GET_USERS) only when action is GET_CHANNELS or GET_USERS

Every parameter above is read from the shipped slack-api node, so it cannot drift from the product.

Connect Slack in two minutes

Download AGNT Community Core — free, local-first, no account needed to run.
Connect with one OAuth sign-in from AGNT’s vault — tokens are stored encrypted on your machine and never leave it.
Drop the Slack node into a workflow or hand it to an agent — the first run produces a receipt you can read line by line.