Batch Call CSV File Guide

This guide explains how to prepare your CSV file for batch calling. Please read this carefully before uploading your file.

The CSV file tells the system who to call and what data to use during each call. If the file format is incorrect, the upload will fail.

1. Required Column

Your CSV file must contain the following column:

  • phone_number — the recipient’s phone number
The phone_number column is mandatory for all batch calls.

It must be the first column in the CSV file.

However, the column name must be exactly phone_number. Without this column, the system will not be able to place calls.

If the selected agent defines variables, include each variable name as a column heading after phone_number. Match the spelling and case shown in the agent variable badges. Additional blank columns are valid and ignored; you do not need to delete them.

2. Phone Number Format

  • Include country code
  • Do not use the + symbol
  • Example: 91XXXXXXXXXX
  • Each row must contain only one phone number

3. Supported File Type

Only .csv (Comma Separated Values) files are supported.
  • Excel (.xlsx, .xls) files are not supported
  • Word (.doc, .docx) files are not supported
  • Always save the file as CSV before uploading

4. How to Save as CSV

  • Open your file in Excel or Google Sheets
  • Click File → Save As
  • Select CSV (Comma delimited)
  • Save and upload the file

5. Using Override Variables & Dynamic Columns

Override variables allow you to customize how the agent behaves for each individual recipient in a batch call. By defining specific columns inside your CSV file, you can control the agent’s language, voice, system behavior, and opening message on a per-contact basis — without creating separate agents.

Any column other than phone_number is treated as a dynamic variable. These values can be referenced inside your agent’s prompt or used as overrides if they match supported system fields.

Supported Override Variables

  • language – Overrides the agent’s speaking language for that recipient
  • first_message – Customizes the very first message spoken to the user
  • system_prompt – Overrides the system-level behavior or personality
  • voice_id – Forces a specific voice for that call

These column names must match exactly. Any spelling or casing difference will cause the override to be ignored.

Example CSV Format

phone_number,name,language,first_message,system_prompt,voice_id 15551234567,John,en,"Hi John, this is your appointment reminder!","You are a friendly reminder assistant for John.",axXgspJ2msm3clMCkdW3 15559876543,Maria,es,"Hola Maria, este es tu recordatorio de cita!","Eres un asistente de recordatorio amigable para Maria.",custom_voice_id

How Dynamic Columns Work

Any column other than phone_number is automatically treated as a dynamic variable. These values can be injected into prompts, greetings, or logic flows during the call.

phone_number,name,language 91XXXXXXXXXX,John,en 91YYYYYYYYYY,Rahul,hi

In the above example:

  • phone_number is mandatory and used to place the call
  • name and language act as dynamic variables
  • If a dynamic column matches a supported override (like language), it will override the default value

Important Notes

  • The phone_number column is mandatory for all batch calls
  • Only override fields that are enabled in the agent’s security settings will be applied
  • All column names must match exactly — spelling and casing both matter
  • You may include additional columns (e.g. name, user_id, city) for personalization
  • Any column not recognized as an override will still be available as a dynamic variable

Using override variables and dynamic columns together allows you to run highly personalized, large-scale calling campaigns while keeping full control over agent behavior.

6. Column Name Rules

  • Each non-empty column name must be unique
  • Column names are case-sensitive
  • Duplicate named columns are not allowed; empty column headings are ignored
✅ Valid:
phone_number,name,city

✅ Valid:
phone_number,name,city,CITY,City

❌ Invalid:
mobile_number,name,city

❌ Invalid:
phone_number,name,name,city
If duplicate column names are detected, the file will be rejected.

Summary

  • CSV format only
  • The first column must be phone_number
  • Include every agent-defined variable as a column heading after it
  • Extra blank columns are ignored
  • Country code required (without +)
  • Other columns become dynamic variables
  • Each row = one call