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v1.34.0 — official-MCP tools, routed workflow operations, review fixes

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@czlonkowski czlonkowski released this 29 Aug 12:14
· 2 commits to main since this release
v1.34.0
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Learn about vigilant mode.

Documents the official-MCP adapter from n8n-mcp 2.75.0 / 2.76.0, and closes the gaps a review of that documentation found. Rolls up 1.32.0, 1.33.0 and 1.34.0 (PR #49).

New tools documented

  • n8n_manage_agents — persisted n8n Agents: a standalone assistant artifact with its own lifecycle, distinct from the AI Agent workflow node.
  • n8n_explore_node_resources — resolve a node's live dropdown / resource-locator values through a real credential instead of guessing an ID.
  • n8n_list_catalog — list instance projects and tags.

Routed workflow operations

  • n8n_test_workflow gained method: auto / trigger over HTTP, and prepare / pinned / direct through n8n's own MCP server — which means a workflow with no HTTP trigger (Manual, Schedule, sub-workflow) can finally be run from MCP.
  • n8n_workflow_versions gained source: "native" (n8n's own history, including edits people made in the UI) and mode: "diff".
  • n8n_manage_datatable gained addColumn / deleteColumn / renameColumn.
  • The exposeToMcp consent flow and WORKFLOW_NOT_EXPOSED are documented wherever they apply, along with the side-effect reality of pinned and direct runs.

Review fixes

  • The always-on router skill now carries the three new tools and the routed operations — it is injected every session, so without this the new surface was invisible on most turns.
  • n8n_explore_node_resources had been documented with three of its six required parameters; following it produced INVALID_ARGS. Now complete, with a worked example.
  • n8n_health_check's officialMcp block is documented as the preflight for every N8N_MCP_ACCESS_TOKEN-gated capability.
  • The agent config hash round-trips as configHash out, args.baseConfigHash in — a real failure path, since args are forwarded verbatim.
  • deleteColumn is flagged as destroying the column's values, which matters because a column's type cannot be changed after creation.
  • Persisted-agent custom tools are TypeScript (@n8n/agents + zod only) — a third code runtime, distinct from the Code node and the toolCode Custom Code Tool.

Install

Claude Code plugin users on the marketplace update in place. Everyone else: n8n-mcp-skills-v1.34.0.zip is the complete bundle; individual skill zips are attached for Claude.ai uploads.

Conceived by Romuald Członkowski — https://www.aiadvisors.pl/en

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