This workflow follows the Slack → Slack Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"name": "Slack chat router (example)",
"nodes": [
{
"parameters": {
"trigger": [
"any_event",
"message"
],
"watchWorkspace": true,
"options": {
"resolveIds": false,
"userIds": "={{ [\"U00000000BOT\"] }}"
}
},
"type": "n8n-nodes-base.slackTrigger",
"typeVersion": 1,
"position": [
-288,
48
],
"id": "a4fd7e45-2ec5-4588-8419-cdd0c787e0e6",
"name": "Slack Trigger",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 3
},
"conditions": [
{
"leftValue": "={{ $json.user === \"U00000000OWNER\" && $json.type === \"message\" }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"id": "69ac51ac-eef9-422a-846a-9d23760f7daa"
}
],
"combinator": "and"
},
"renameOutput": true,
"outputKey": "Owner new message"
},
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 3
},
"conditions": [
{
"id": "6be2d2be-bdfb-4487-9a6f-1b87abb452e8",
"leftValue": "={{ $json.user === \"U00000000OWNER\" && $json.type === \"reaction\" }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "equals",
"name": "filter.operator.equals"
}
}
],
"combinator": "and"
},
"renameOutput": true,
"outputKey": "Owner Added Reaction"
},
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 3
},
"conditions": [
{
"id": "3726290c-15b6-4c60-9720-28b109b45859",
"leftValue": "={{ $json.user !== \"U00000000OWNER\" && $json.type === \"message\" }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
],
"combinator": "and"
},
"renameOutput": true,
"outputKey": "unknown user"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.switch",
"typeVersion": 3.4,
"position": [
160,
32
],
"id": "fc990f48-cd17-43f1-b04b-a8036d67c370",
"name": "Switch"
},
{
"parameters": {
"select": "user",
"user": {
"__rl": true,
"value": "={{ $('Slack Trigger').item.json.user }}",
"mode": "id"
},
"text": "={{ [\"Two atoms walk into a bar. One says 'I think I lost an electron.' The other replies, 'Are you sure?' 'I'm positive.'\",\"A neutron walks into a bar. The bartender says, 'For you, no charge.'\",\"Photons have mass? I didn't even know they were Catholic.\",\"I'd help you, but my owner has me on a strict no-stranger policy.\"][Math.floor(Math.random()*4)] }}\n\n_I'm a private AI assistant. I only respond to my owner._",
"otherOptions": {
"includeLinkToWorkflow": false,
"thread_ts": {
"replyValues": {
"thread_ts": "={{ $('Slack Trigger').item.json.ts }}"
}
},
"mrkdwn": true
}
},
"type": "n8n-nodes-base.slack",
"typeVersion": 2.4,
"position": [
528,
304
],
"id": "47bffa05-810e-4c70-bd3f-950b794e35d7",
"name": "Send canned reply to non-owner",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"workflowId": {
"__rl": true,
"value": "exampleAgentCoreWfId",
"mode": "list",
"cachedResultName": "Chat agent core"
},
"workflowInputs": {
"mappingMode": "defineBelow",
"value": {
"chatInput": "={{ $('Slack Trigger').item.json.text }}",
"threadId": "={{ $('Slack Trigger').item.json.thread_ts || $('Slack Trigger').item.json.ts }}"
},
"matchingColumns": [],
"schema": [
{
"id": "chatInput",
"displayName": "chatInput",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string",
"removed": false
},
{
"id": "threadId",
"displayName": "threadId",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string",
"removed": false
}
],
"attemptToConvertTypes": false,
"convertFieldsToString": true
},
"options": {}
},
"type": "n8n-nodes-base.executeWorkflow",
"typeVersion": 1.3,
"position": [
768,
-208
],
"id": "8f38246b-7810-4875-a6a0-6c0d90273ee2",
"name": "Call 'Agent core'",
"retryOnFail": true,
"maxTries": 2,
"waitBetweenTries": 5000,
"onError": "continueErrorOutput"
},
{
"parameters": {
"select": "user",
"user": {
"__rl": true,
"value": "={{ $('Slack Trigger').item.json.user }}",
"mode": "id"
},
"messageType": "block",
"blocksUi": "={{ { \"blocks\": $('Call \\'Agent core\\'').item.json.output.blocks } }}",
"otherOptions": {
"includeLinkToWorkflow": false,
"thread_ts": {
"replyValues": {
"thread_ts": "={{ $('Slack Trigger').item.json.thread_ts || $('Slack Trigger').item.json.ts }}"
}
},
"mrkdwn": false
}
},
"type": "n8n-nodes-base.slack",
"typeVersion": 2.4,
"position": [
1216,
-208
],
"id": "580cf92e-b198-4eec-988b-f232f7fa345a",
"name": "Send Block Kit reply",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"resource": "reaction",
"channelId": {
"__rl": true,
"value": "={{ $json.channel }}",
"mode": "id"
},
"timestamp": "={{ $json.ts }}",
"name": "spinner"
},
"type": "n8n-nodes-base.slack",
"typeVersion": 2.4,
"position": [
528,
-208
],
"id": "873145eb-46e1-4075-a7f8-10711447b94a",
"name": "Add Loading Reaction",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"resource": "reaction",
"operation": "remove",
"channelId": {
"__rl": true,
"value": "={{ $('Switch').item.json.channel }}",
"mode": "id"
},
"timestamp": "={{ $('Switch').item.json.ts }}",
"name": "spinner"
},
"type": "n8n-nodes-base.slack",
"typeVersion": 2.4,
"position": [
992,
-208
],
"id": "ee481219-af13-4a1a-9363-2b15791f553d",
"name": "Remove Loading Reaction (success)",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"resource": "reaction",
"operation": "remove",
"channelId": {
"__rl": true,
"value": "={{ $('Switch').item.json.channel }}",
"mode": "id"
},
"timestamp": "={{ $('Switch').item.json.ts }}",
"name": "spinner"
},
"type": "n8n-nodes-base.slack",
"typeVersion": 2.4,
"position": [
800,
32
],
"id": "e3cfba63-109f-4269-b5b2-1d9353a58167",
"name": "Remove Loading Reaction (error)",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"content": "### Anti-loop filter (trigger-level)\n\nThe Slack Trigger's `options.userIds` is an **exclusion list**: events from any user in the list are dropped before the workflow runs. Put the bot's own user ID here so the bot's replies don't re-trigger the workflow.\n\nWhen the trigger handles the bot filter, no separate Filter node is needed downstream.",
"height": 336,
"width": 240
},
"type": "n8n-nodes-base.stickyNote",
"position": [
-336,
-160
],
"typeVersion": 1,
"id": "64b85d5f-f0bc-4793-b7a3-88b9b0430118",
"name": "Sticky: anti-loop"
},
{
"parameters": {
"content": "Switch routes by event type. Becomes a router for slash commands and shortcuts as new event types are added.",
"height": 336,
"width": 208
},
"type": "n8n-nodes-base.stickyNote",
"position": [
112,
-112
],
"typeVersion": 1,
"id": "1b4b8495-b74d-4bba-b79e-51280f69fbeb",
"name": "Sticky: switch"
},
{
"parameters": {
"content": "Loading reaction (added before agent, removed on both success and error paths).",
"height": 336,
"width": 208
},
"type": "n8n-nodes-base.stickyNote",
"position": [
480,
-352
],
"typeVersion": 1,
"id": "5c88a0a2-c0d5-4e9d-99b5-6c979919f1ae",
"name": "Sticky: loading reaction"
},
{
"parameters": {
"content": "### Block Kit envelope, NOT a raw array\n\n`blocksUi` must be an object shaped `{ \"blocks\": [...] }`, where the value is a real array, not just the blocks array on its own.\n\nThe agent returns `{ text, blocks }`, so wrap in a single expression that returns the object (reference the upstream by name, not `$json`):\n\n`={{ { \"blocks\": $('Call \\'Agent core\\'').item.json.output.blocks } }}`\n\nPassing only the array (`={{ $('Call \\'Agent core\\'').item.json.output.blocks }}`) silently fails: the Slack node accepts the input, the message posts with no rich content, and there is no error.",
"height": 336,
"width": 280
},
"type": "n8n-nodes-base.stickyNote",
"position": [
1184,
-560
],
"typeVersion": 1,
"id": "7b1c2d3e-4f5a-4b6c-9d8e-1f2a3b4c5d6e",
"name": "Sticky: block kit envelope"
},
{
"parameters": {
"select": "user",
"user": {
"__rl": true,
"value": "={{ $('Slack Trigger').item.json.user }}",
"mode": "id"
},
"text": "=There was a workflow error. https://<your-n8n-host>/workflow/<this-workflow-id>/executions/{{ $execution.id }}",
"otherOptions": {
"includeLinkToWorkflow": false,
"thread_ts": {
"replyValues": {
"thread_ts": "={{ $('Slack Trigger').item.json.thread_ts || $('Slack Trigger').item.json.ts }}"
}
},
"mrkdwn": false
}
},
"type": "n8n-nodes-base.slack",
"typeVersion": 2.4,
"position": [
1024,
32
],
"id": "2267a068-bf1a-48cf-9316-61ad1063c17b",
"name": "Send error message with execution link",
"credentials": {
"slackApi": {
"name": "<your credential>"
}
}
}
],
"connections": {
"Slack Trigger": {
"main": [
[
{
"node": "Switch",
"type": "main",
"index": 0
}
]
]
},
"Switch": {
"main": [
[
{
"node": "Add Loading Reaction",
"type": "main",
"index": 0
}
],
[],
[
{
"node": "Send canned reply to non-owner",
"type": "main",
"index": 0
}
]
]
},
"Call 'Agent core'": {
"main": [
[
{
"node": "Remove Loading Reaction (success)",
"type": "main",
"index": 0
}
],
[
{
"node": "Remove Loading Reaction (error)",
"type": "main",
"index": 0
}
]
]
},
"Add Loading Reaction": {
"main": [
[
{
"node": "Call 'Agent core'",
"type": "main",
"index": 0
}
]
]
},
"Remove Loading Reaction (success)": {
"main": [
[
{
"node": "Send Block Kit reply",
"type": "main",
"index": 0
}
]
]
},
"Remove Loading Reaction (error)": {
"main": [
[
{
"node": "Send error message with execution link",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
slackApi
Pro
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About this workflow
Slack chat router (example). Uses slackTrigger, slack. Event-driven trigger; 13 nodes.
Source: https://github.com/n8n-io/skills/blob/main/skills/n8n-agents/references/examples/slack-router.json — original creator credit. Request a take-down →
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