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": "Arenza \u2014 Weekly GEO Digest to Slack",
"nodes": [
{
"parameters": {
"rule": {
"interval": [
{
"field": "cronExpression",
"expression": "0 9 * * 1"
}
]
}
},
"id": "node-cron",
"name": "Schedule: Mondays 9 AM",
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.1,
"position": [
240,
300
]
},
{
"parameters": {
"url": "https://api.arenza.ai/v1/brands",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"options": {
"retry": {
"maxRetries": 3,
"waitBetweenRetries": 5000
}
}
},
"id": "node-list-brands",
"name": "GET /v1/brands",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
460,
300
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"fieldToSplitOut": "data",
"options": {}
},
"id": "node-split-brands",
"name": "Split Brands",
"type": "n8n-nodes-base.splitOut",
"typeVersion": 1,
"position": [
680,
300
]
},
{
"parameters": {
"url": "=https://api.arenza.ai/v1/brands/{{ $json.id }}/overview",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"options": {
"retry": {
"maxRetries": 3,
"waitBetweenRetries": 5000
}
}
},
"id": "node-overview",
"name": "GET /brands/:id/overview",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
900,
220
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"url": "=https://api.arenza.ai/v1/brands/{{ $json.id }}/opportunities?limit=5&sort=lift_desc",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"options": {
"retry": {
"maxRetries": 3,
"waitBetweenRetries": 5000
}
}
},
"id": "node-opportunities",
"name": "GET /brands/:id/opportunities",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
900,
380
],
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"mode": "combine",
"combineBy": "combineByPosition",
"options": {}
},
"id": "node-merge",
"name": "Merge Overview + Opportunities",
"type": "n8n-nodes-base.merge",
"typeVersion": 3,
"position": [
1140,
300
]
},
{
"parameters": {
"jsCode": "// Format an Arenza brand snapshot into a Slack Block Kit message.\n// Input: merged item with brand overview + top opportunities.\n// Output: { channel, blocks } per item.\n\nconst MAX_MESSAGE_LENGTH = 3500;\n\n// Map brand_id -> Slack channel. Edit for per-client channels.\nconst BRAND_CHANNEL_MAP = {\n // 'brand-uuid-here': '#client-acme',\n};\nconst DEFAULT_CHANNEL = '#geo-digest';\n\nconst LLMS = ['ChatGPT', 'Claude', 'Gemini', 'Perplexity', 'Copilot', 'Grok'];\n\nreturn items.map(item => {\n const data = item.json;\n const brandName = data.name ?? 'unknown brand';\n const sov = (data.share_of_voice ?? 0).toFixed(1);\n const wrongClaims = data.wrong_claims ?? 0;\n const opps = data.opportunities ?? [];\n const perLLM = data.per_llm_mention_rate ?? {};\n const channel = BRAND_CHANNEL_MAP[data.id] ?? DEFAULT_CHANNEL;\n\n const llmRows = LLMS.map(llm => {\n const rate = perLLM[llm.toLowerCase()] ?? 0;\n return `\u2022 ${llm}: ${(rate * 100).toFixed(0)}%`;\n }).join('\\n');\n\n const oppRows = opps.slice(0, 5).map((o, i) =>\n `${i + 1}. *${o.title}* \u2014 +${(o.estimated_lift ?? 0).toFixed(1)} SoV pts`\n ).join('\\n') || '_No new opportunities this week._';\n\n const blocks = [\n {\n type: 'header',\n text: { type: 'plain_text', text: `${brandName} \u2014 Weekly GEO Digest` }\n },\n {\n type: 'section',\n fields: [\n { type: 'mrkdwn', text: `*Share of Voice*\\n${sov}%` },\n { type: 'mrkdwn', text: `*Wrong Claims (30d)*\\n${wrongClaims}` }\n ]\n },\n {\n type: 'section',\n text: { type: 'mrkdwn', text: `*Mention rate per LLM*\\n${llmRows}` }\n },\n {\n type: 'section',\n text: { type: 'mrkdwn', text: `*Top opportunities*\\n${oppRows}` }\n },\n {\n type: 'context',\n elements: [\n { type: 'mrkdwn', text: `<https://app.arenza.ai/brands/${data.id}|Open in Arenza dashboard> \u00b7 powered by arenza.ai` }\n ]\n }\n ];\n\n return { json: { channel, blocks } };\n});\n"
},
"id": "node-format",
"name": "Format Slack Blocks",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1360,
300
]
},
{
"parameters": {
"resource": "message",
"operation": "post",
"select": "channel",
"channelId": "={{ $json.channel }}",
"blocksUi": "={{ JSON.stringify($json.blocks) }}",
"otherOptions": {}
},
"id": "node-slack",
"name": "Slack: chat.postMessage",
"type": "n8n-nodes-base.slack",
"typeVersion": 2.2,
"position": [
1580,
300
],
"credentials": {
"slackOAuth2Api": {
"name": "<your credential>"
}
}
}
],
"connections": {
"Schedule: Mondays 9 AM": {
"main": [
[
{
"node": "GET /v1/brands",
"type": "main",
"index": 0
}
]
]
},
"GET /v1/brands": {
"main": [
[
{
"node": "Split Brands",
"type": "main",
"index": 0
}
]
]
},
"Split Brands": {
"main": [
[
{
"node": "GET /brands/:id/overview",
"type": "main",
"index": 0
},
{
"node": "GET /brands/:id/opportunities",
"type": "main",
"index": 0
}
]
]
},
"GET /brands/:id/overview": {
"main": [
[
{
"node": "Merge Overview + Opportunities",
"type": "main",
"index": 0
}
]
]
},
"GET /brands/:id/opportunities": {
"main": [
[
{
"node": "Merge Overview + Opportunities",
"type": "main",
"index": 1
}
]
]
},
"Merge Overview + Opportunities": {
"main": [
[
{
"node": "Format Slack Blocks",
"type": "main",
"index": 0
}
]
]
},
"Format Slack Blocks": {
"main": [
[
{
"node": "Slack: chat.postMessage",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
},
"tags": [
{
"name": "arenza"
},
{
"name": "geo"
},
{
"name": "weekly-digest"
}
]
}
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.
httpHeaderAuthslackOAuth2Api
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About this workflow
Arenza — Weekly GEO Digest to Slack. Uses httpRequest, slack. Scheduled trigger; 8 nodes.
Source: https://github.com/arenza-ai/arenza-n8n-template/blob/main/workflows/weekly-digest.json — original creator credit. Request a take-down →
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