{"id":"spences10-mcp-n8n-builder","name":"mcp-n8n-builder","af_score":69.0,"security_score":50.5,"reliability_score":26.2,"what_it_does":"An MCP server that provides tools for programmatic creation, retrieval, updating, and deletion of n8n workflows, plus workflow activation/deactivation and listing/getting execution details. It validates node types against the target n8n instance and supports configurable output verbosity to reduce token usage.","best_when":"You want an MCP-compatible agent to manage n8n workflows programmatically and you can supply N8N_HOST/N8N_API_KEY securely.","avoid_when":"You need strong, documented retry/idempotency semantics for destructive operations, or you cannot control the token/response size when fetching large workflows.","last_evaluated":"2026-03-30T13:49:50.096583+00:00","has_mcp":true,"has_api":false,"auth_methods":["n8n API key via N8N_API_KEY environment variable (passed through to REST API calls)"],"has_free_tier":false,"known_gotchas":["Token usage can be high for large n8n workflow JSON; use OUTPUT_VERBOSITY=concise and consider per-tool verbosity overrides.","update_workflow requires the entire workflow structure (not a patch); agents must supply complete, validated payloads.","delete_workflow is permanent and cannot be undone—agents should be careful with confirmation/guardrails outside this package."],"error_quality":null}