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SkillSnap Official GuideUpdated 7/24/2026
n8n
The fair-code workflow automation tool. Master nodes, expressions, and self-hosting for ultimate flexibility.
Editor Shortcuts
Command Palette (Add nodes fast)Ctrl + K
Open Node Search PanelTab
Deactivate Node (Skip in run)D
Pin Data (Freeze output for testing)P
Add Sticky Note (Documentation)Shift + S
Execute Workflow / NodeCtrl + Enter
Expressions & Data
Start Expression Mode (First char)=
Robust node reference$('Node').item
Nullish Coalescing (Fallbacks){{ $json.val ?? 'default' }}
Date Math (Luxon){{ $now.plus({ days: 1 }) }}
Sanitize user input{{ $json.text.trim() }}
Workflow Architecture
Modularize logic (Execute Workflow node)Sub-workflows
Process >500 items (Prevent OOM)Split in Batches
Rate Limit throttling (Prevent 429s)Wait Node
Centralized failure alertingError Workflow
API & Webhooks
Auto-config HTTP Request nodeImport cURL
Auto-loop API pagesPagination
Check Rate-Limits in responseInclude Headers
Replay failed webhooksExecution History
Self-Hosting Performance
Mandatory DB for productionPostgreSQL
Redis + Workers (High load)Queue Mode
Prune history (e.g., 14 days)EXECUTIONS_DATA_MAX_AGE
Offload large files to S3N8N_BINARY_DATA_STORAGE=s3
AI & Advanced
Connect workflows as 'Tools' to LLMsAI Agent
Local, private LLM inferenceOllama Node
Force LLM to return valid JSONStructured Output
CLI backup of all workflowsn8n export:workflow