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CallKaro CLI lets you manage voice AI agents, calls, phone numbers, simulations, and analytics from your terminal.

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Prerequisites

Install Node.js 18 or newer before installing the CLI.

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Install the CLI

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macOS or Linux

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Windows

Run in PowerShell:

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npm

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Manual installation

The package installs two equivalent commands: ck and callkaro. The examples below use ck.

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Sign in and verify your account

1

Sign in

Run the interactive login flow and enter your CallKaro account credentials when prompted.
2

Verify the active account

3

List your voice agents

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Explore available commands

Don’t have a CallKaro account yet? Run ck register to create one from the terminal.

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Common commands

Agents

Calls

Phone numbers

Simulations

Run ck <command> --help to see the options and subcommands available for any command.

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Install skills for your coding agent

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Claude Code

Install the CallKaro skill pack:
You can also install it from the Claude Code plugin marketplace:

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OpenAI Codex

Copy the skills to ~/.codex/skills and add them to ~/.codex/AGENTS.md:

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Use the CLI in automation

Set CK_TOKEN when a script or CI job cannot use the interactive login flow.
Keep tokens private. Do not commit tokens or configuration files containing credentials.
Interactive login stores your session in ~/.config/callkaro/config.json with restricted file permissions. Run ck logout to revoke the session.