Callio
Callio is an API gateway built for AI agent workflows
COMPANY
Callio
ADDED DATE
2/24/2026
CATEGORY
Developer & Technical Infrastructure
Callio is an API gateway built for AI agent workflows. It provides a unified proxy to connect agents to external APIs quickly while handling practical integration concerns such as authentication, key management, and rate limits, reducing the overhead of building and maintaining multi-API access.
Value Propositions
ForAI agent developers
Whoneed many APIs with different keys
Callioprovides one key and proxy to call APIs
So they canadd real-world actions to agents fast
ForAI agent developers
Whoneed many APIs with different keys
Callioprovides one key and proxy to call APIs
So they canadd real-world actions to agents fast
Features
single API key for many APIsunified proxy endpoint by API slugAPI discovery and browsingstores provider keys securelyMCP server for Claude Code and Cursorbuilt-in rate limits and usage tracking