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id type title tags importance confidence created updated
22d124fd-34e9-4538-acef-9962642a0e54 insight Insight: n8n test_workflow API cannot trigger schedule-based workflows
n8n
mcp
api
limitation
0.5 0.8 2026-02-20T04:17:05.893034+00:00 2026-02-20T04:17:05.893034+00:00

n8n API Limitation: Schedule Triggers Not Testable via API

Observation

The n8n MCP n8n_test_workflow tool (and the underlying n8n API) only works with externally-triggerable workflows. Supported trigger types:

  • Webhook
  • Form
  • Chat

Limitation

Schedule-triggered workflows (e.g., cron, interval) cannot be executed on-demand via the API or MCP tools.

Workarounds

  • Wait for the next scheduled run
  • Manually test the SSH command chain outside n8n
  • Temporarily add a webhook trigger node to test, then remove it
  • Use the n8n UI "Execute Workflow" button (manual run from the editor)