The deciding difference is operational: Arcade can run on infrastructure you control, Composio cannot. If that constraint is real for you, it settles the choice before anything else is considered.
Managed auth and tool-calling for 250+ SaaS apps.
Tool-calling with per-user OAuth, so the agent acts as the user, not as root.
The per-user token model is what stops one user's agent reading another user's mailbox.
| Composio | Arcade | |
|---|---|---|
| Licence | Open source | Open source |
| Pricing | freemium | freemium |
| Self-hostable | No | Yes |
| Languages | Python, TypeScript | Python, TypeScript |
| Install | pip install composio | — |
| Keys required | COMPOSIO_API_KEY | ARCADE_API_KEY |
The deciding difference is operational: Arcade can run on infrastructure you control, Composio cannot. If that constraint is real for you, it settles the choice before anything else is considered. Composio: Managed auth and tool-calling for 250+ SaaS apps. Arcade: Tool-calling with per-user OAuth, so the agent acts as the user, not as root.
Composio is a hosted service only. Arcade can run on your own infrastructure.
Composio is open source (freemium). Arcade is open source (freemium).
Every page here answers to Accept: text/markdown and returns the same content at roughly a tenth the tokens. No separate site, no toggle — same URL.
curl -s -H "Accept: text/markdown" https://newagent.build/compare/composio-vs-arcade