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Agent Delta

Editorial · 5 Nov 2026

Best AI tools for building agents

For people constructing agents, not only chatting with one.

Agent Delta's readers are already building. This list is the practical set: a strong assistant, an editor that can change a repo, a workflow runtime, and a place to deploy an internal agent.

  1. 1

    Claude

    The assistant in the building loop.

  2. 2

    Cursor

    The editor that can apply the change.

  3. 3

    n8n

    The action runtime.

  4. 4

    Dust

    Where an internal agent meets the rest of the company.

  5. 5

    ChatGPT

    The OpenAI-standardised alternative.

Bottom line

Claude and Cursor for the building loop. n8n when the agent has to take actions. Dust when the agent is for the rest of the company. ChatGPT if the organisation is already standardised on OpenAI.