This is the first thing you see when you open the Agent tab, and it’s the most important part of your setup. The instructions tell your Agent how it should behave, what kind of tasks it should handle, what tone to use, and what to do (or not do) in different situations. You’ll see a text area with a helper note above it: “Describe how your agent should work. It’s recommended to provide examples of tasks it might receive and what to do. You can reference tools/inputs as variables by typing ‘Documentation Index
Fetch the complete documentation index at: https://docs.vectorshift.ai/llms.txt
Use this file to discover all available pages before exploring further.
{{’ to open the variable builder.”

“You are an intelligent assistant designed to provide helpful, accurate, and relevant information. Your responsibilities:You can replace this entirely with your own instructions. You can reference tools and inputs in your instructions by typingWhen responding, focus on providing value while being respectful of the user’s time and needs.”
- Answer questions clearly and concisely
- Assist with tasks within your capabilities
- Acknowledge when you don’t know something
- Maintain a professional and friendly tone
- Follow user instructions carefully
{{ in the text field. This opens a variable builder that lets you insert references to specific tools or input variables (e.g., input_0) by name. This is useful when you want to explicitly tell the Agent when or how to use a particular tool, or when you need to inject input values directly into the instructions.
Input variables are only available when the agent variant is set to Functional. If you’re using a different variant, only tool references will appear in the variable builder.
If you reference a variable that doesn’t exist or has been removed, the instructions field will show a red border to indicate the invalid reference.
