n8n shipped [email protected] on 2026-09-29: Agents enabled by default (#39312); AI Agent Tool can use its own tools under a pre-v3 parent agent (#39160); MCP Client terminates sessions before close, MCP Registry flag removed from AI Assistant, editor adds Mistral Vibe to MCP picker; Azure OpenAI Chat Model renamed Azure AI Foundry with project/deployment listing and Entra app sign-in; plus shared Agent context and Agent Builder UX polish.

Key Takeaways

  • ✓Release [email protected] on 2026-09-29; compare 2.41.0...2.42.0
  • ✓Agents enabled by default (#39312); shared Agent context (#38930)
  • ✓AI Agent Tool nests its own tools under pre-v3 parents (#39160)
  • ✓MCP: terminate session on client close; Registry ungated in AI Assistant; Mistral Vibe in MCP picker
  • ✓Azure OpenAI node renamed Azure AI Foundry Chat Model; docs AI Agents
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In-Depth Technical Analysis

Background

Embedding LLM agents in low-code workflows often stalls on feature flags, nested AI Agent Tools losing their tools under older parents, and MCP session/registry friction. Azure naming (OpenAI vs AI Foundry) also confuses credentials.

What shipped

[email protected] enables Agents by default (#39312), adds shared Agent context (#38930), lets AI Agent Tools use their own tools under pre-v3 parents (#39160), hardens MCP client teardown/registry UX (incl. Mistral Vibe), and renames Azure OpenAI Chat Model to Azure AI Foundry Chat Model with project/deployment listing and Entra app sign-in.

Benchmarks

No public agent leaderboard in the notes. Regression-test nested tools and MCP session cleanup on your workflows.

Get started

Upgrade to 2.42.0; read AI Agents and the Agent node docs. Full diff: 2.41.0...2.42.0.