Omer Fayyaz This workflow corresponds to n8n.io template #11254 — we link there as the canonical source.
The workflow JSON
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{
"id": "oYwsgPiHu1rbAnF3",
"name": "Calendly Availability Checker",
"tags": [],
"nodes": [
{
"id": "9f5a31b3-8662-4c93-b7e8-15f9612ef3e0",
"name": "\ud83d\udccb WORKFLOW OVERVIEW",
"type": "n8n-nodes-base.stickyNote",
"position": [
-192,
480
],
"parameters": {
"color": 5,
"width": 440,
"height": 496,
"content": "## \ud83d\uddd3\ufe0f Calendly Availability Checker\n\n**What this workflow does:**\n1. \ud83d\udd10 Authenticates with Calendly API\n2. \ud83d\udc64 Gets your user information\n3. \ud83d\udccb Lists all your event types\n4. \u23f0 Checks real-time availability for next 7 days\n5. \ud83d\udcca Returns formatted availability data\n\n**Use Cases:**\n- Display available slots on your website\n- Check availability before suggesting times\n- Build custom booking interfaces\n- Integrate with chatbots for scheduling\n\n**Trigger Options:**\n- Webhook (API call)\n- Manual (for testing)\n- Schedule (periodic checks)"
},
"typeVersion": 1
},
{
"id": "884e26b4-9f13-4d49-bfa2-3e86f37b6b30",
"name": "\u2699\ufe0f SETUP GUIDE",
"type": "n8n-nodes-base.stickyNote",
"position": [
1200,
480
],
"parameters": {
"color": 6,
"width": 448,
"height": 488,
"content": "## \u2699\ufe0f Setup Instructions\n\n**Step 1: Calendly Credentials**\n1. Go to calendly.com/integrations\n2. Click \"API & Webhooks\"\n3. Create Personal Access Token\n OR set up OAuth2 app\n4. In n8n, create credential:\n - Type: \"Calendly OAuth2 API\"\n - Follow OAuth flow\n\n**Step 2: Configure Workflow**\n1. Update credential in HTTP nodes\n2. Test \"Get Current User\" first\n3. Verify event types are returned\n\n**Step 3: Customize (Optional)**\n- Change date range (default: 7 days)\n- Filter specific event types\n- Add response formatting\n\n---"
},
"typeVersion": 1
},
{
"id": "dfb1be1c-9d70-420b-a6fc-491935039ebe",
"name": "Webhook Trigger",
"type": "n8n-nodes-base.webhook",
"notes": "POST /check-calendly-availability\nOptional body: { \"event_type_uri\": \"...\" }",
"position": [
320,
528
],
"parameters": {
"path": "check-calendly-availability",
"options": {},
"httpMethod": "POST",
"responseMode": "responseNode"
},
"typeVersion": 2
},
{
"id": "d4c04dcb-99d3-4a69-a459-99fe3e1735fa",
"name": "\ud83c\udfaf TRIGGERS",
"type": "n8n-nodes-base.stickyNote",
"position": [
-192,
1008
],
"parameters": {
"color": 6,
"width": 436,
"height": 316,
"content": "## \ud83c\udfaf Triggers\n\n**Webhook POST Body:**\n```json\n{\n \"event_type_uri\": \"optional\",\n \"days_ahead\": 7\n}\n```\n\nIf no event_type_uri provided,\nuses first active event type."
},
"typeVersion": 1
},
{
"id": "a443b254-4970-4e23-8bff-d1498a356b01",
"name": "Set Configuration",
"type": "n8n-nodes-base.set",
"notes": "Extract optional parameters from request",
"position": [
560,
528
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "cfg1",
"name": "requested_event_type",
"type": "string",
"value": "={{ $json.body?.event_type_uri || '' }}"
},
{
"id": "cfg2",
"name": "days_ahead",
"type": "number",
"value": "={{ $json.body?.days_ahead || 7 }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "8bafde54-7d0f-43cc-b939-ea7dd7fe67dd",
"name": "Get Current User",
"type": "n8n-nodes-base.httpRequest",
"notes": "GET /users/me",
"onError": "continueRegularOutput",
"position": [
800,
528
],
"parameters": {
"url": "https://api.calendly.com/users/me",
"options": {
"response": {
"response": {}
}
},
"authentication": "predefinedCredentialType",
"nodeCredentialType": "calendlyOAuth2Api"
},
"credentials": {
"calendlyOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.3
},
{
"id": "9d75a542-8b3a-4094-a275-bb57130b706b",
"name": "Extract User Info",
"type": "n8n-nodes-base.set",
"notes": "Parse user data from response",
"position": [
560,
752
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "u1",
"name": "user_uri",
"type": "string",
"value": "={{ $json.resource?.uri }}"
},
{
"id": "u2",
"name": "user_name",
"type": "string",
"value": "={{ $json.resource?.name }}"
},
{
"id": "u3",
"name": "user_email",
"type": "string",
"value": "={{ $json.resource?.email }}"
},
{
"id": "u4",
"name": "organization_uri",
"type": "string",
"value": "={{ $json.resource?.current_organization }}"
},
{
"id": "u5",
"name": "scheduling_url",
"type": "string",
"value": "={{ $json.resource?.scheduling_url }}"
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4
},
{
"id": "92a97501-5f67-4a4a-8ffc-9d506eee4532",
"name": "Get Event Types",
"type": "n8n-nodes-base.httpRequest",
"notes": "GET /event_types?user={uri}&active=true",
"onError": "continueRegularOutput",
"position": [
800,
752
],
"parameters": {
"url": "https://api.calendly.com/event_types",
"options": {},
"sendQuery": true,
"authentication": "predefinedCredentialType",
"queryParameters": {
"parameters": [
{
"name": "user",
"value": "={{ $json.user_uri }}"
},
{
"name": "active",
"value": "true"
}
]
},
"nodeCredentialType": "calendlyOAuth2Api"
},
"credentials": {
"calendlyOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.3
},
{
"id": "222a18e8-f366-4e92-a950-9ea75387cdc9",
"name": "Select Event Type",
"type": "n8n-nodes-base.set",
"notes": "Select requested or first event type",
"position": [
560,
992
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "et1",
"name": "event_types_count",
"type": "number",
"value": "={{ ($json.collection || []).length }}"
},
{
"id": "et2",
"name": "event_types_list",
"type": "array",
"value": "={{ ($json.collection || []).map(e => ({ uri: e.uri, name: e.name, duration: e.duration, slug: e.slug })) }}"
},
{
"id": "et3",
"name": "selected_event_type_uri",
"type": "string",
"value": "={{ $('Set Configuration').item.json.requested_event_type || ($json.collection && $json.collection.length > 0 ? $json.collection[0].uri : '') }}"
},
{
"id": "et4",
"name": "selected_event_type_name",
"type": "string",
"value": "={{ $json.collection && $json.collection.length > 0 ? $json.collection[0].name : 'No event types' }}"
},
{
"id": "et5",
"name": "selected_event_duration",
"type": "number",
"value": "={{ $json.collection && $json.collection.length > 0 ? $json.collection[0].duration : 0 }}"
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4
},
{
"id": "9aab3b00-d855-4ea2-9389-e2b43c0c7d94",
"name": "Get Available Times",
"type": "n8n-nodes-base.httpRequest",
"notes": "GET /event_type_available_times",
"onError": "continueRegularOutput",
"position": [
800,
992
],
"parameters": {
"url": "https://api.calendly.com/event_type_available_times",
"options": {},
"sendQuery": true,
"authentication": "predefinedCredentialType",
"queryParameters": {
"parameters": [
{
"name": "event_type",
"value": "={{ $json.selected_event_type_uri }}"
},
{
"name": "start_time",
"value": "={{ new Date(Date.now() + 1 * 24 * 60 * 60 * 1000).toISOString() }}"
},
{
"name": "end_time",
"value": "={{ new Date(Date.now() + ($('Set Configuration').item.json.days_ahead || 7) * 24 * 60 * 60 * 1000).toISOString() }}"
}
]
},
"nodeCredentialType": "calendlyOAuth2Api"
},
"credentials": {
"calendlyOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.3
},
{
"id": "dabe7159-de5b-45a6-bdaa-eeffe493f3f0",
"name": "Format Availability",
"type": "n8n-nodes-base.set",
"notes": "Format slots for easy consumption",
"position": [
560,
1232
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "av1",
"name": "total_slots_available",
"type": "number",
"value": "={{ ($json.collection || []).length }}"
},
{
"id": "av2",
"name": "has_availability",
"type": "boolean",
"value": "={{ ($json.collection || []).length > 0 }}"
},
{
"id": "av3",
"name": "next_available_slot",
"type": "string",
"value": "={{ ($json.collection && $json.collection.length > 0) ? $json.collection[0].start_time : null }}"
},
{
"id": "av4",
"name": "next_available_formatted",
"type": "string",
"value": "={{ ($json.collection && $json.collection.length > 0) ? new Date($json.collection[0].start_time).toLocaleString('en-US', { weekday: 'long', month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' }) : 'No slots available' }}"
},
{
"id": "av5",
"name": "available_slots",
"type": "array",
"value": "={{ ($json.collection || []).slice(0, 20).map(slot => ({ start_time: slot.start_time, formatted: new Date(slot.start_time).toLocaleString('en-US', { weekday: 'short', month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' }), booking_url: slot.scheduling_url })) }}"
},
{
"id": "av6",
"name": "slots_by_day",
"type": "object",
"value": "={{ Object.entries(($json.collection || []).reduce((acc, slot) => { const day = new Date(slot.start_time).toLocaleDateString('en-US', { weekday: 'long', month: 'short', day: 'numeric' }); if (!acc[day]) acc[day] = []; acc[day].push({ time: new Date(slot.start_time).toLocaleTimeString('en-US', { hour: '2-digit', minute: '2-digit' }), url: slot.scheduling_url }); return acc; }, {})).reduce((obj, [k, v]) => { obj[k] = v; return obj; }, {}) }}"
}
]
},
"includeOtherFields": true
},
"typeVersion": 3.4
},
{
"id": "f67a6696-b3b0-4ad2-a38c-f9040aaba04c",
"name": "Respond with Availability",
"type": "n8n-nodes-base.respondToWebhook",
"notes": "Returns comprehensive availability data",
"position": [
992,
1232
],
"parameters": {
"options": {
"responseCode": 200,
"responseHeaders": {
"entries": [
{
"name": "Content-Type",
"value": "application/json"
}
]
}
},
"respondWith": "json",
"responseBody": "={\n \"success\": true,\n \"user\": {\n \"name\": \"{{ $('Extract User Info').item.json.resource.name }}\",\n \"email\": \"{{ $('Extract User Info').item.json.resource.email }}\",\n \"scheduling_url\": \"{{ $('Extract User Info').item.json.resource.scheduling_url }}\"\n },\n \"event_type\": {\n \"name\": \"{{ $('Select Event Type').item.json.selected_event_type_name }}\",\n \"duration_minutes\": {{ $('Select Event Type').item.json.selected_event_duration }},\n \"uri\": \"{{ $('Select Event Type').item.json.selected_event_type_uri }}\"\n },\n \"availability\": {\n \"has_slots\": {{ $json.has_availability }},\n \"total_slots\": {{ $json.total_slots_available }},\n \"next_available\": \"{{ $json.next_available_formatted }}\",\n \"next_available_iso\": {{ $json.next_available_slot ? '\"' + $json.next_available_slot + '\"' : 'null' }}\n },\n \"slots\": {{ JSON.stringify($json.available_slots) }},\n \"slots_by_day\": {{ JSON.stringify($json.slots_by_day) }},\n \"all_event_types\": {{ JSON.stringify($('Select Event Type').item.json.event_types_list) }},\n \"checked_at\": \"{{ new Date().toISOString() }}\"\n}"
},
"typeVersion": 1.1
},
{
"id": "11b7d4fb-b6ce-479a-b8c7-bbfcb6b3dea9",
"name": "\ud83d\udce4 RESPONSE FORMAT",
"type": "n8n-nodes-base.stickyNote",
"position": [
1200,
992
],
"parameters": {
"color": 5,
"width": 452,
"height": 372,
"content": "## \ud83d\udce4 Response Format\n\n```json\n{\n \"success\": true,\n \"user\": { ... },\n \"event_type\": { ... },\n \"availability\": {\n \"has_slots\": true,\n \"total_slots\": 45,\n \"next_available\": \"Mon, Dec 2, 10:00 AM\"\n },\n \"slots\": [...],\n \"slots_by_day\": {\n \"Monday, Dec 2\": [...],\n \"Tuesday, Dec 3\": [...]\n }\n}\n```"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "4e611e92-190b-4e4d-9b3a-270808b3be07",
"connections": {
"Get Event Types": {
"main": [
[
{
"node": "Select Event Type",
"type": "main",
"index": 0
}
]
]
},
"Webhook Trigger": {
"main": [
[
{
"node": "Set Configuration",
"type": "main",
"index": 0
}
]
]
},
"Get Current User": {
"main": [
[
{
"node": "Extract User Info",
"type": "main",
"index": 0
}
]
]
},
"Extract User Info": {
"main": [
[
{
"node": "Get Event Types",
"type": "main",
"index": 0
}
]
]
},
"Select Event Type": {
"main": [
[
{
"node": "Get Available Times",
"type": "main",
"index": 0
}
]
]
},
"Set Configuration": {
"main": [
[
{
"node": "Get Current User",
"type": "main",
"index": 0
}
]
]
},
"Format Availability": {
"main": [
[
{
"node": "Respond with Availability",
"type": "main",
"index": 0
}
]
]
},
"Get Available Times": {
"main": [
[
{
"node": "Format Availability",
"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.
calendlyOAuth2Api
Pro
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About this workflow
This template is designed for developers, businesses, and service providers who need to programmatically check Calendly availability. It's perfect for: Web developers building custom booking interfaces that need real-time availability data Chatbot developers who want to suggest…
Source: https://n8n.io/workflows/11254/ — original creator credit. Request a take-down →
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