Pay-per-use tools for AI agents

One prepaid balance across every tool. No provider API keys. Charged only when a call succeeds.

Like OpenRouter, but for tools

Start with $1 free

Works with any agent

  • Claude
  • ChatGPT
  • Cursor
  • Opencode
  • Hermes
  • Openclaw

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How it works

From prompt to paid tool calls

  1. Step 01

    Paste the prompt into your agent

    Copy the setup prompt and give it to Claude, Cursor, ChatGPT, or any agent you already use.

  2. Step 02

    It installs the CLI and you sign in

    Your agent installs the Cralo CLI. Sign in once and get $1 free credit to start calling tools.

  3. Step 03

    It calls tools at the published price

    The agent discovers tools from the catalog and calls them. Cralo charges your prepaid balance only when a call succeeds.

Tools your agent can call

Common questions

Using tools from an AI agent

How do agents pay for API calls?

Agents authenticate with Cralo and spend from one prepaid balance. The catalog shows the price before each call, and Cralo deducts the published charge only when the call succeeds. Agents do not need a separate subscription for every provider.

How do I use People Data Labs without an API key?

Install the Cralo CLI, authenticate, and call the People Data Labs person or company tools from the Cralo catalog. Cralo manages the provider connection, so you need a Cralo account and balance, not a separate People Data Labs API key.

What is a tool router?

A tool router gives AI agents one interface for discovering and calling tools from many providers. It handles shared concerns such as authentication, billing, and consistent results. Cralo is a pay-per-use tool router with one catalog and one prepaid balance.