This workflow follows the HTTP Request → Slack 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": "Optimize Campaigns",
"nodes": [
{
"parameters": {},
"id": "feb071ec-e104-4330-93fe-66226a2573ea",
"name": "Cron",
"type": "n8n-nodes-base.cron",
"typeVersion": 1,
"position": [
-608,
112
]
},
{
"parameters": {
"functionCode": "return items.map(item => {\n const m = item.json;\n let action = null;\n if(m.cpl && m.cpl > 50 && m.conversions >= 5) action = 'pause';\n else if(m.roas && m.roas < 1.2 && m.spend > 100) action = 'reduce_budget';\n return {json:{...m,action}};\n});"
},
"id": "a4ce930a-2ed2-418e-bb28-8c66b3efec46",
"name": "Function Apply Rules",
"type": "n8n-nodes-base.function",
"typeVersion": 1,
"position": [
-64,
112
]
},
{
"parameters": {
"conditions": {
"boolean": [
{
"value1": "={{$json[\"action\"]}}",
"value2": "pause"
}
]
}
},
"id": "fa170e85-99bf-44e1-8dfa-889b69000b68",
"name": "If Pause",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
208,
0
]
},
{
"parameters": {
"conditions": {
"boolean": [
{
"value1": "={{$json[\"action\"]}}",
"value2": "reduce_budget"
}
]
}
},
"id": "8f3264a0-d8f6-4206-b185-f1bbf791c167",
"name": "If Budget",
"type": "n8n-nodes-base.if",
"typeVersion": 1,
"position": [
208,
208
]
},
{
"parameters": {
"method": "POST",
"url": "https://mockapi.io/projects/apply-action",
"sendBody": true,
"bodyParameters": {
"parameters": [
{}
]
},
"options": {}
},
"id": "ec058c60-0fd3-4943-a9c2-01c095fdaa2f",
"name": "HTTP Apply Action",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
432,
112
]
},
{
"parameters": {
"authentication": "oAuth2",
"channel": "#alerts",
"text": "Action: {{$json[\"action\"]}} on campaign {{$json[\"campaign_name\"]}} (CPL: {{$json[\"cpl\"]}}, ROAS: {{$json[\"roas\"]}})",
"otherOptions": {},
"attachments": []
},
"id": "5f62acdc-3cc5-4f1a-ada7-0cb8a40d2d58",
"name": "Slack Alert",
"type": "n8n-nodes-base.slack",
"typeVersion": 1,
"position": [
608,
112
],
"credentials": {
"slackOAuth2Api": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "get",
"tableId": "campaign_metrics",
"filters": {
"conditions": [
{
"keyName": "date"
}
]
}
},
"type": "n8n-nodes-base.supabase",
"typeVersion": 1,
"position": [
-320,
112
],
"id": "16390da3-f0f4-4254-b50b-d3f5f5a7a830",
"name": "Get Campaign Metrics",
"credentials": {
"supabaseApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"tableId": "campaign_actions"
},
"type": "n8n-nodes-base.supabase",
"typeVersion": 1,
"position": [
816,
112
],
"id": "b493028e-a3cd-4bfb-9bb2-def743f37bd9",
"name": "Create a row",
"credentials": {
"supabaseApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {},
"type": "n8n-nodes-base.noOp",
"typeVersion": 1,
"position": [
432,
-48
],
"id": "7617ee2c-727f-4699-ad9d-4257c3af395e",
"name": "No Operation, do nothing"
},
{
"parameters": {},
"type": "n8n-nodes-base.noOp",
"typeVersion": 1,
"position": [
448,
304
],
"id": "3832379f-c341-4124-bd3e-20ff52c438a2",
"name": "Do Nothing"
}
],
"connections": {
"Cron": {
"main": [
[
{
"node": "Get Campaign Metrics",
"type": "main",
"index": 0
}
]
]
},
"Function Apply Rules": {
"main": [
[
{
"node": "If Pause",
"type": "main",
"index": 0
},
{
"node": "If Budget",
"type": "main",
"index": 0
}
]
]
},
"If Pause": {
"main": [
[
{
"node": "HTTP Apply Action",
"type": "main",
"index": 0
}
],
[
{
"node": "No Operation, do nothing",
"type": "main",
"index": 0
}
]
]
},
"If Budget": {
"main": [
[
{
"node": "HTTP Apply Action",
"type": "main",
"index": 0
}
],
[
{
"node": "Do Nothing",
"type": "main",
"index": 0
}
]
]
},
"HTTP Apply Action": {
"main": [
[
{
"node": "Slack Alert",
"type": "main",
"index": 0
}
]
]
},
"Get Campaign Metrics": {
"main": [
[
{
"node": "Function Apply Rules",
"type": "main",
"index": 0
}
]
]
},
"Slack Alert": {
"main": [
[
{
"node": "Create a row",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "b274dab1-718e-4d9a-ae44-db6118ee23ae",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "KHJchHLKZs5skeyr",
"tags": []
}
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.
slackOAuth2ApisupabaseApi
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About this workflow
Optimize Campaigns. Uses httpRequest, slack, supabase. Scheduled trigger; 10 nodes.
Source: https://github.com/Paulinho19/ad-optimization-agent/blob/c4357bc957f05fd90c20e1c7506433e041b126fe/workflows/optimize.json — original creator credit. Request a take-down →
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