Custom Variables
Create reusable variables to personalize your AI agent prompts across interviews.
What are Custom Variables?
Custom variables let you define placeholders like {{company_background}} or {{research_focus}} that can be filled in differently for each interview. This allows you to:
- Reuse prompts across different research projects
- Customize interviews without editing the agent prompt each time
- Ensure consistency with required fields that must be filled in
- Provide defaults for optional information
System Variables vs Custom Variables
System Variables (Built-in)
InsightAgent provides these variables automatically:
| Variable | Description |
|---|---|
{{expert_name}} | Expert's full name |
{{client_name}} | Your organization name |
{{questions_list}} | Interview questions |
{{call_subject}} | Interview topic |
{{compliance_disclaimer}} | Legal disclaimer |
{{expert_current_role}} | Expert's current position |
{{expert_employment_history}} | Expert's work history |
Custom Variables (Your Own)
Create your own variables for project-specific information:
| Example Variable | Use Case |
|---|---|
{{company_background}} | Target company context |
{{research_focus}} | Specific research area |
{{competitor_list}} | Competitors to explore |
{{industry_context}} | Industry-specific details |
Creating Variables
Navigate to Settings
- Go to Settings in the sidebar
- Click Variables
- Click Add Variable
Define the Variable
| Field | Description | Required |
|---|---|---|
| Name | Variable key used in prompts (e.g., company_background) | Yes |
| Display Name | Human-readable label shown in forms (e.g., "Company Background") | Yes |
| Description | Help text explaining what to enter | No |
| Required | Whether a value must be provided for each interview | No |
| Default Value | Fallback value if not specified | No |
Variable Name Rules
Variable names must:
- Start with a letter (a-z, A-Z)
- Contain only letters, numbers, and underscores
- Be unique within your account
Valid examples: company_name, targetMarket, research_focus_2024
Invalid examples: 123name, has-hyphen, has spaces
Using Variables in Prompts
Reference variables in your agent prompts using double curly braces:
You are researching {{company_background}} for {{client_name}}.
Focus on understanding:
- Their position in {{industry_context}}
- Competition with {{competitor_list}}
- Specific areas: {{research_focus}}
QUESTIONS:
{{questions_list}}
Required vs Optional Variables
Required Variables
Mark a variable as required when every interview using that agent needs a value:
- Interviews cannot be created without providing a value
- The form shows a red asterisk (*) next to required fields
- Save button is disabled until all required fields are filled
Use for: Critical context the AI needs to conduct the interview properly.
Optional Variables
Leave a variable as optional when it's helpful but not essential:
- Interviews can be created without a value
- If no value is provided, the default value (if set) is used
- If no default exists, the variable is replaced with empty text
Use for: Additional context that enhances but isn't critical to the interview.
Default Values
Set a default value for optional variables to ensure the prompt always has meaningful content:
Variable: industry_context
Default: "the technology industry"
Prompt: "...their position in {{industry_context}}..."
Result when no value provided: "...their position in the technology industry..."
Result when value is "healthcare": "...their position in healthcare..."
Interview Workflow
Creating an Interview
When creating an interview with an agent that uses custom variables:
- Select the agent for your interview
- A Custom Variables section appears with fields for each variable
- Required fields are marked with a red asterisk (*)
- Default values are pre-filled (you can change them)
- Fill in the values and save
Editing an Interview
You can update variable values before the interview is conducted:
- Open the interview detail page
- Find the Custom Variables section
- Click Edit to modify values
- Click Save to apply changes
Changing Agents
When changing an interview's agent to one with different variables:
- Click Change Agent on the interview
- A preview modal shows the new agent's variables
- Fill in any required values
- Confirm to apply the change
Deleting Variables
Variables that are used by agent prompts cannot be deleted. To delete a variable:
- Remove the
{{variable_name}}reference from all agent prompts - Return to Settings → Variables
- The Delete option becomes available
Best Practices
Naming Conventions
Use descriptive, consistent names:
// Good - clear and consistent
company_background
research_focus
target_industry
// Avoid - unclear or inconsistent
cb
researchFocus
INDUSTRY
Required vs Optional
- Make variables required when the AI cannot perform well without them
- Make variables optional when they add context but aren't critical
- Always provide default values for optional variables when possible
Organization
- Create variables at the account level so they can be reused across agents
- Use similar variable names across related agents for consistency
- Document variable purposes in the description field
Prompt Writing
- Reference variables where they make sense contextually
- Don't overload prompts with too many variables
- Test prompts with different variable values to ensure they work well
Troubleshooting
"Missing required variables" error
This occurs when trying to save an interview without filling in all required variable values. Fill in all fields marked with (*).
Variable not being replaced
Check that:
- The variable name in the prompt exactly matches the defined name
- The syntax is correct:
{{variable_name}}with double curly braces - The variable is linked to the agent version being used
Can't delete a variable
The variable is still referenced in one or more agent prompts. The error message shows which agents use the variable. Remove the references first, then delete.