Triggers

Crayon workflows can be triggered via MCP tools, HTTP webhooks, or cron schedules.

MCP Tools (Claude)

Use these to trigger workflows and nodes directly from Claude:

• run_workflow — run a workflow by name with JSON input. Returns run_id, status, and result.
• run_node — run a single node (wrapped in a workflow for durability). Takes optional workflow_name for connection resolution.
• list_runs — list recent workflow runs (optionally filtered by workflow name).
• get_run — get a specific run by ID (supports prefix matching like git short hashes).
• get_trace — get the full execution trace with operation tree and timings.

Webhooks

Two modes for HTTP triggering:

Test Mode