callio

Callio provides a unified API gateway and proxy for AI agents, centralizing authentication and usage tracking across multiple services through a single access key. It integrates natively with MCP-compatible tools and developer environments like Cursor and Claude Code.

• Unified authentication management through a single Callio access key for multiple external APIs.
• Native support for Model Context Protocol (MCP) and popular developer tools like Cursor and Claude Code.
• Integrated usage tracking and billing management across diverse API providers.
• Web, API, and MCP platform availability with a free tier for initial development.

Ideal for: Developers and indie hackers building AI agents who need to simplify API integration and workflow automation without managing individual provider keys.