One prompt drives the whole conversation. The agent reasons freely from your instructions on every turn, keeping the full conversation in context and adapting as the dialogue moves — rather than following a fixed script.

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What you write

  1. An initial message — the first thing the agent says (the greeting).
  2. A main prompt — everything the agent should know and do.
There’s no required structure to the main prompt. You can keep it free-flowing or organize it into sections — whatever suits your use case.
Single Prompt Agent structure

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Best for

Open-ended, flexible conversations like customer support, FAQs, product inquiries, and general assistants where the agent needs to adapt to unexpected questions and conversational turns.

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Get started

Available on all plans. New to prompting? See Writing instructions and the Prompt Cookbook for detailed guides and examples.