Tool calling that handles the login, so an agent can act as a real user. Built by Arcade.dev.
Others in protocols and tools
Agent2Agent
ComposioHundreds of tools, with auth already handled.
FastMCP
Model Context ProtocolThe standard that plugs any agent into any tool.Common questions
Is Arcade free to use?
Arcade is open source and free to run yourself. You still pay whichever model provider you point it at, and this tutorial is free with no signup.
Do I need to know Python to use Arcade?
Basic Python is enough. Functions, dictionaries and imports cover most of what Arcade asks of you.
When should I not use Arcade?
When something else in protocols and tools fits the job better. The others in that group are listed below.
Lessons for Arcade are being written. Meanwhile the APIs for AI tutorial covers the same ground: state, tools, loops, memory and human approval. Most of it carries straight over.
Start the APIs for AI tutorial →