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In Basic mode you get one single text box, and you write the agent’s full prompt inside it — everything, from start to finish. It is the fastest way to get started, the easiest to set up, and the quickest to change. But what should you write inside that box? A good, complete prompt is made of 8 sections. In Basic mode you write all 8 yourself, one after another, inside that single box. These same 8 sections are the foundation of every prompt you will ever write, so it is worth understanding each one properly.
  1. Role / Persona. Who the agent is — its name, language, tone, and personality. This is the first thing you set; think of it as giving the agent its identity before it gets on a call. Example: “You are Arya, a friendly and confident sales assistant from CallKaro AI. You sound warm, human, and never robotic.”
  2. Goal / Objective. What the agent needs to achieve on the call. The goal keeps the agent focused. Example: confirm identity, then explain the service, then book a demo.
  3. Call Flow. The step-by-step roadmap of how the conversation should go — what to say, when to say it, and what to do if the customer takes the talk in a different direction. You can add IF/THEN conditions too. Example: “If the customer says they are busy, then ask for a callback time, then end the call.”
  4. Instructions. The detailed do’s and don’ts the agent must keep in mind. Example: “Always wait for the customer to finish speaking. Never repeat the same line twice. Adjust your tone to the customer’s mood.”
  5. Behavioural Guidelines. How the agent sounds and feels — tone, language style, filler words, response length, and how human or formal it comes across.
  6. Rebuttals. Ready-made replies for common pushbacks like “call me later” or “I’m busy right now,” so the agent keeps the conversation moving. Example — Customer: “Why are you calling me?” Agent: “Just reaching out to show how we can make your work simpler — it only takes 2 minutes, shall I go ahead?”
  7. Objections. Like rebuttals, but deeper. These handle real concerns — pricing, timing, or trust — so the agent answers them without losing the customer.
  8. Guardrails. The hard limits — things the agent must never say or do. This keeps the agent safe and on-brand even when the customer pulls the talk off track. Example: “Never promise a price without knowing the order volume. Never book a demo if the customer says they are not doing business.”
When to use: Basic mode is best when you want to get started fast, the agent is simple, and you want quick edits.