Step 2: Connect Slack Search and Map Message Data

Search for Slack messages that contain ticket markers and map required fields for downstream processing.

1. Open Slack Message Search and set Operation to search.
2. Set Query to in:#n8n-tickets has::ticket: and Limit to 10.
3. Credential Required: Connect your slackApi credentials.
4. In Map Message Fields, set Mode to raw and JSON Output to ={ "id": "#{{ $json.permalink.split('/').last() }}", "type": "{{ $json.type }}", "title": "__NOT_SET__", "channel": "{{ $json.channel.name }}", "user": "{{ $json.username }} ({{ $json.user }})", "ts": "{{ $json.ts }}", "permalink": "{{ $json.permalink }}", "message": "{{ $json.text.replaceAll('\"','\\\\\"').replaceAll('\n', '\\n') }}"}.
5. Connect Slack Message Search to Map Message Fields.

Step 3: Build the Existing-Issue Check and Parallel Data Streams

Fetch existing Linear issues, aggregate descriptions, extract hashes, and combine them with the Slack message data for duplication checks.

1. Connect Map Message Fields to both Combine Data Streams and Retrieve Existing Issues in parallel.
2. Retrieve Existing Issues: set Operation to getAll and connect Credential Required: your linearApi credentials.
3. In Aggregate Descriptions, set Field to Aggregate to description and Output Field Name to descriptions.
4. In Extract Issue Hashes, add an assignment named hashes with value ={{ $json.descriptions.map(desc => desc.match(/hash\:\s([\w#]+)/i)[1]) }}.
5. Configure Combine Data Streams with Mode combine and Combination Mode multiplex.

Map Message Fields outputs to both Combine Data Streams and Retrieve Existing Issues in parallel.

Step 4: Set Up the Ticket Creation Gate and AI Drafting

Stop duplicate ticket creation and generate structured ticket data with the OpenAI chain.

1. Connect Combine Data Streams to Ticket Creation Check.
2. In Ticket Creation Check, set the boolean condition to ={{ Boolean(($json.hashes ?? []).includes($json.id)) }} and compare to false so only new messages pass.
3. Open Draft Ticket with ChatGPT and set Prompt Type to define.
4. Set the Text prompt to =The "user issue" is enclosed by 3 backticks: ``` {{ $('Map Message Fields').item.json.message }} ``` You will complete the following 4 tasks: 1. Generate a title intended for a support ticket based on the user issue only. Be descriptive but use no more than 10 words. 2. Summarise the user issue only by identifying the key expectations and steps that were taken to reach the conclusion. 3. Offer at most 3 suggestions to debug or resolve the user issue only. ignore the previous issues for this task. 4. Identify the urgency of the user issue only and denote the priority as one of "low", "medium", "high" or "urgent". If you cannot determine the urgency of the issue, then assign the "low" priority. Also consider that requests which require action either today or tomorrow should be prioritised as "high"..
5. Attach OpenAI Chat Engine as the language model for Draft Ticket with ChatGPT and Structured Result Parser as the output parser.
6. Credential Required: Connect your openAiApi credentials in OpenAI Chat Engine (do not add credentials to Structured Result Parser).

Step 5: Configure Linear Ticket Creation

Create a new Linear ticket using the structured AI output and original Slack metadata.

1. Open Create Linear Ticket and set Title to ={{ $json.output.title }}.
2. Set Team ID to [YOUR_ID] and update State ID to [YOUR_ID] in Additional Fields.
3. Set Priority ID to ={{ { 'urgent': 1, 'high': 2, 'medium': 3, 'low': 4 }[$json.output.priority.toLowerCase()] ?? 0 }}.
4. Set Description to =## {{ $json.output.summary }} ### Suggestions {{ $json.output.ideas.map(idea => '* ' + idea).join('\n') }} ## Original Message {{ $('Map Message Fields').item.json["user"] }} asks: > {{ $('Map Message Fields').item.json["message"] }} ### Metadata channel: {{ $('Map Message Fields').item.json.channel }} ts: {{ $('Map Message Fields').item.json.ts }} permalink: {{ $('Map Message Fields').item.json.permalink }} hash: {{ $('Map Message Fields').item.json.id }} .
5. Credential Required: Connect your linearApi credentials in Create Linear Ticket.

Step 6: Test and Activate Your Workflow

Run a manual test to confirm Slack search, duplication checks, AI drafting, and Linear ticket creation work as expected.

1. Click Execute Workflow and verify that Slack Message Search returns messages with :ticket: in #n8n-tickets.
2. Confirm Ticket Creation Check only passes items not found in hashes.
3. Check Draft Ticket with ChatGPT outputs a structured object with title, summary, ideas, and priority.
4. Verify a new issue appears in Linear with the formatted description and metadata from Map Message Fields.
5. Once successful, toggle the workflow to Active so Scheduled Automation Trigger runs on schedule.