# 0bridge and Composio

Composio is a platform for developers who build AI agents, with managed sign-in and a large catalog of tool integrations. 0bridge is for one person who uses several AI tools and wants them to share the same services and context. As of 2026-10-01.

## The short version

Use Composio if you are building an agent or product and need managed authentication for your own users across many apps. Use 0bridge if you are the user: you want your own Linear, Slack and Notion available in Claude, ChatGPT, Codex and Cursor at once, and your sessions, memory and secrets to follow you.

## Side by side

| | 0bridge | Composio |
|---|---|---|
| Built for | A person with several AI tools | Developers building agents and apps |
| Whose accounts | Yours | Your end users' |
| Main interface | One MCP endpoint, a CLI, a dashboard | SDKs and APIs, with MCP as one way in |
| Session history and resume | Yes | Not its job |
| Secrets for your own commands | Vault, used by name with `0b exec` | Not its job |
| Control of your coding agents | Yes, off by default | Not its job |
| Cost | Free for one person | Check their pricing |

Composio's column is how we understand it on the date above; their documentation is the source of truth.

## When not to use 0bridge

- You are building a product that needs sign-in and tool calls for many end users. 0bridge is one person's account, not a platform for your customers.
- You need a catalog of integrations you can call from your own code with an SDK.
- You need a service level agreement. 0bridge is a small service run by one person.