{ "name": "Coolie: competitor churn → Slack alert", "nodes": [ { "parameters": { "content": "## Coolie: alert Slack when competitor churn is detected\n\nWhen a Coolie agent finds a company that stopped using a competitor's product, this workflow finds the contact's email through Coolie's API and alerts a Slack channel.\n\n### How it works\n1. **Coolie webhook** receives the **lead.created** event, raw body kept.\n2. **Verify Coolie signature** checks the `Coolie-Signature` header with your webhook's secret and stops anything else.\n3. **Competitor churn only** keeps the leads whose signal is `competitor-churn`, and Coolie's test event.\n4. **Find the email** calls `POST /api/v1/agents/{agentId}/leads/contact`: 0.1 credit when an email is found, nothing when none is found or when the lead already has one.\n5. **Lead and email** puts the lead and the email together.\n6. **Alert Slack** sends the alert.\n\n### Setup\n1. In **Find the email**, create a **Header Auth** credential: name `Authorization`, value `Bearer` followed by a space and your Coolie API key (Settings → API keys).\n2. In **Alert Slack**, connect Slack and pick the channel.\n3. Copy the **Production URL** of **Coolie webhook**.\n4. In Coolie: **Settings → Webhooks**, paste the URL, tick **New lead**, click **Add webhook**, then **Reveal** the secret.\n5. Paste the secret at the top of **Verify Coolie signature**.\n6. Save and publish the workflow (on n8n before 2.0, activate it).\n7. Click **Send test** in Coolie: a test alert appears (its sample lead has no email to find).\n\nSelf-hosted n8n: allow the crypto module (`NODE_FUNCTION_ALLOW_BUILTIN=crypto`, on the task runners when you use them).\nGuide: https://trycoolie.ai/developers/templates/competitor-churn-to-slack", "height": 820, "width": 480 }, "id": "cc8c01c6-8049-46a0-8492-c03cdbfba242", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ -560, -280 ] }, { "parameters": { "httpMethod": "POST", "path": "coolie-churn-alert", "responseMode": "onReceived", "options": { "rawBody": true } }, "id": "36e33f0d-edd3-4c9d-8678-8e28453df67c", "name": "Coolie webhook", "type": "n8n-nodes-base.webhook", "typeVersion": 2, "position": [ 0, 0 ], "webhookId": "c14719c1-d5aa-4644-8753-858d3ee1799b" }, { "parameters": { "jsCode": "// Coolie signs every event: Coolie-Signature: t=,v1=.\n// This node recomputes it on the raw body with your webhook's secret, and stops anything else.\n// Paste the secret below: Coolie > Settings > Webhooks > Reveal (it starts with whsec_).\nconst SECRET = 'PASTE_YOUR_COOLIE_WEBHOOK_SECRET';\n\nconst crypto = require('crypto');\nif (!SECRET.startsWith('whsec_')) {\n throw new Error('Paste your Coolie webhook secret (whsec_...) in the Verify Coolie signature node.');\n}\nconst request = $input.first().json;\nconst rawBody = (await this.helpers.getBinaryDataBuffer(0, 'data')).toString('utf8');\nconst parts = Object.fromEntries(\n String(request.headers['coolie-signature'] || '').split(',').map((part) => part.split('=')),\n);\nconst expected = Buffer.from(crypto.createHmac('sha256', SECRET).update(parts.t + '.' + rawBody).digest('hex'));\nconst given = Buffer.from(String(parts.v1 || ''));\nconst fresh = Math.abs(Date.now() / 1000 - Number(parts.t)) < 300;\nif (!fresh || given.length !== expected.length || !crypto.timingSafeEqual(given, expected)) {\n throw new Error('Not a Coolie event: the signature does not match.');\n}\nreturn [{ json: JSON.parse(rawBody), pairedItem: { item: 0 } }];" }, "id": "c665dce6-bfcf-4b95-8d5f-4e588256758a", "name": "Verify Coolie signature", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 240, 0 ] }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict", "version": 2 }, "conditions": [ { "id": "fb8b78ce-2d39-4f37-845d-262f1ad7e7cc", "leftValue": "={{ $json.type }}/{{ $json.data.lead ? $json.data.lead.signal.type : '' }}", "rightValue": "lead.created/competitor-churn", "operator": { "type": "string", "operation": "equals" } }, { "id": "3f7ff085-c072-4896-82d1-2f67e242d980", "leftValue": "={{ $json.type }}", "rightValue": "test", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "or" }, "options": {} }, "id": "96d0af67-8781-4954-8fd6-66be0c0ffd07", "name": "Competitor churn only", "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 480, 0 ] }, { "parameters": { "method": "POST", "url": "=https://trycoolie.ai/api/v1/agents/{{ $json.data.lead.agentId || 'none' }}/leads/contact", "authentication": "genericCredentialType", "genericAuthType": "httpHeaderAuth", "sendBody": true, "specifyBody": "json", "jsonBody": "={{ JSON.stringify({ runId: $json.data.lead.runId, prospectId: $json.data.lead.prospectId, field: 'email' }) }}", "options": { "response": { "response": { "neverError": true } } } }, "id": "6399f3b8-df93-458b-808e-4090d4338e77", "name": "Find the email", "type": "n8n-nodes-base.httpRequest", "typeVersion": 4.2, "position": [ 720, 0 ] }, { "parameters": { "assignments": { "assignments": [ { "id": "dfdaed7c-c2ba-46d8-8726-62f5af40534b", "name": "lead", "value": "={{ $('Competitor churn only').item.json.data.lead }}", "type": "object" }, { "id": "5ffb8939-3d50-4d34-86af-7b4c4e360fe7", "name": "test", "value": "={{ $('Competitor churn only').item.json.type === 'test' }}", "type": "boolean" }, { "id": "af99158f-5626-4512-8394-4097eb19717d", "name": "email", "value": "={{ $json.found === true ? $json.value : '' }}", "type": "string" } ] }, "options": {} }, "id": "f0cd74b2-c4d9-48bd-843c-344f636ee322", "name": "Lead and email", "type": "n8n-nodes-base.set", "typeVersion": 3.4, "position": [ 960, 0 ] }, { "parameters": { "select": "channel", "channelId": { "__rl": true, "mode": "list", "value": "" }, "text": "=:rotating_light: *Competitor churn{{ $json.test ? ' (test event)' : '' }}: {{ $json.lead.company.name }}*{{ $json.lead.company.domain ? ' · ' + $json.lead.company.domain : '' }}\n{{ $json.lead.signal.headline || $json.lead.signal.name }}{{ $json.lead.signal.postedAt ? ' on ' + $json.lead.signal.postedAt : '' }}\nContact: {{ $json.lead.contact ? $json.lead.contact.name + ($json.lead.contact.title ? ', ' + $json.lead.contact.title : '') : 'none found yet' }}\nEmail: {{ $json.email || 'not found' }}{{ $json.lead.contact && $json.lead.contact.linkedinUrl ? ' · ' + $json.lead.contact.linkedinUrl : '' }}\nAI score: {{ $json.lead.aiScore }}/10", "otherOptions": { "includeLinkToWorkflow": false } }, "id": "30d0643a-c238-46a5-8932-18fb5a72d0c0", "name": "Alert Slack", "type": "n8n-nodes-base.slack", "typeVersion": 2.2, "position": [ 1200, 0 ] } ], "connections": { "Coolie webhook": { "main": [ [ { "node": "Verify Coolie signature", "type": "main", "index": 0 } ] ] }, "Verify Coolie signature": { "main": [ [ { "node": "Competitor churn only", "type": "main", "index": 0 } ] ] }, "Competitor churn only": { "main": [ [ { "node": "Find the email", "type": "main", "index": 0 } ], [] ] }, "Find the email": { "main": [ [ { "node": "Lead and email", "type": "main", "index": 0 } ] ] }, "Lead and email": { "main": [ [ { "node": "Alert Slack", "type": "main", "index": 0 } ] ] } }, "pinData": {}, "settings": { "executionOrder": "v1" } }