Oh My Browser
What Oh My Browser is
Oh My Browser connects AI agents to a browser session that is already signed in, enabling page reading and web tasks. Agents can extract structured data, fill forms, click buttons and navigate JavaScript-rendered pages and single-page apps. For software debugging, they can inspect live page state, bounded network requests, runtime errors and form diagnostics, then verify a fix. Its MCP server is described as compatible with Claude Code, Cursor, Codex, Windsurf and other MCP clients. The extension works with Chrome-family browsers including Chrome, Edge, Brave and Arc; Firefox and Safari are not supported. The default edition allows up to eight concurrent tabs and includes Site Memory, while Lite allows one tab and omits that feature. The Free Tier costs nothing, with 50 calls per day resetting at 00:00 UTC. A Standard tier lists higher quotas without exact amounts and says there are currently no fees. The privacy policy says cookies, login state, passwords and browsing history remain in the local browser; active-tab content is forwarded to the AI client as a single response and is not retained on OMB servers.
Who it suits
The full edition is positioned for agent developers and power users who work with supported Chrome-family browsers. Lite is positioned for managed Chrome environments where unpacked extensions are blocked.
What it does well
- Can fill forms, click and navigate single-page apps
- Debugging tools inspect runtime errors and form diagnostics
- MCP compatibility includes Claude Code and Cursor
- Free tier provides 50 daily calls
- Browser login state stays local
What to know first
- Firefox and Safari are not supported
- Lite allows only one concurrent tab
- Lite does not include Site Memory
Limits
The Free Tier allows 50 calls per day and resets at 00:00 UTC. Lite supports one concurrent tab and has no Site Memory; the default edition supports up to eight concurrent tabs and includes Site Memory.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free Tier | No charge · 50 calls per day · resets at 00:00 UTC | Free |
| Lite | unlimited for personal users · core read/write features · Chrome Web Store distribution | Free |
| Full | developer-mode installation · debugger/CDP features · full network-response capture | Free |
| Standard tier | No fees currently; higher quotas are listed in the dashboard · Higher quotas; exact quota not stated on the page | On request |
| Pro | team sharing · priority support · higher rate limits · waitlist | On request |
As omb.org.cn lists them, read 8 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://omb.org.cn/.
- Install the extension in a supported Chrome-family browser such as Chrome or Edge.
- Choose Lite for a managed Chrome environment that blocks unpacked extensions, or the full edition for agent development and power use.
- Connect through its MCP server using Claude Code, Cursor, Codex, Windsurf, or another MCP client.
- Use the Free Tier for up to 50 calls per day, resetting at 00:00 UTC.
Verdict
Oh My Browser gives AI clients access to an existing browser session, including tools for web tasks and debugging. Check browser compatibility and edition limits first, especially if you need Firefox, Safari or multiple tabs in Lite.
Questions
Is Oh My Browser free?
Yes. Its Free Tier costs nothing and allows 50 calls per day, resetting at 00:00 UTC.
Which browsers does it support?
The extension supports Chrome-family browsers, including Chrome, Edge, Brave, and Arc. Firefox and Safari are not supported.
Which AI clients can connect?
Its MCP server is described as compatible with Claude Code, Cursor, Codex, Windsurf, and other MCP clients.
What is the difference between Lite and the default edition?
Lite supports one concurrent tab and does not include Site Memory. The default edition supports up to eight concurrent tabs and includes Site Memory.
Where does browser session data go?
The privacy policy says cookies, login state, passwords, and browsing history stay in the local browser. Active-tab content is forwarded to the AI client as a single-shot response and is not retained on OMB servers.
Facts from Oh My Browser's own pages
- Agent integrations
- Its MCP server is described as compatible with Claude Code, Cursor, Codex, Windsurf, and other MCP clients. · omb.org.cn, 8 Oct 2026
- Authenticated sessions
- Existing Chrome sessions can be used with SSO, two-factor authentication, cookie-gated content and enterprise intranets without sharing credentials with the agent. · omb.org.cn, 15 Oct 2026
- Browser actions
- Agents can click, type, scroll, navigate and extract information through the extension. · chromewebstore.google.com, 15 Oct 2026
- Browser compatibility
- The extension supports Chrome-family browsers, including Chrome, Edge, Brave, and Arc; Firefox and Safari are not supported. · omb.org.cn, 8 Oct 2026
- Chrome WebMCP requirement
- OMB says its extension bridge works without enabling Chrome's experimental WebMCP API. · omb.org.cn, 15 Oct 2026
- Chrome Web Store compatibility
- The listing says the extension works with Chromium browsers including Edge, Brave, Arc, Vivaldi and Opera. · chromewebstore.google.com, 15 Oct 2026
- Compliance
- OMB says it follows China's PIPL and, where applicable, the EU GDPR. · omb.org.cn, 15 Oct 2026
- Credential boundary
- Cookies, login state, passwords and browsing history remain in the local Chrome or Edge profile and are not uploaded to OMB servers. · omb.org.cn, 15 Oct 2026
- Data handling
- The policy says active-tab content is forwarded to the AI client as a single-shot response and is not retained on OMB servers; query text is stored as a SHA hash by default. · omb.org.cn, 8 Oct 2026
- Data hosting
- The privacy policy says service data is hosted in mainland China on Aliyun. · omb.org.cn, 15 Oct 2026
- Debugging
- For software debugging, agents can inspect live page state, bounded network requests, runtime errors, and form diagnostics, then verify a fix. · omb.org.cn, 8 Oct 2026
- Developer SDK
- Web developers can install the JavaScript/TypeScript package @getohmy/omb-web-diagnostics to expose bounded application diagnostics. · omb.org.cn, 15 Oct 2026
- Diagnostics support
- The CLI provides omb version, omb status and omb doctor commands for checking and repairing connectivity. · omb.org.cn, 15 Oct 2026
- Dynamic pages
- The product supports JavaScript-rendered pages, single-page applications and infinite scrolling. · omb.org.cn, 15 Oct 2026
- Edition concurrency
- Lite supports one concurrent tab, while the full edition supports up to eight tabs. · omb.org.cn, 15 Oct 2026
- Edition difference
- Lite omits Site Memory, while both editions provide reading, interaction, generic diagnostics and logged-in-session support. · omb.org.cn, 15 Oct 2026
- Editions and limits
- Lite supports one concurrent tab and has no Site Memory, while the default edition supports up to eight concurrent tabs and Site Memory. · omb.org.cn, 8 Oct 2026
- Element targeting
- OMB exposes an accessibility tree and DOM map, with CDP fallback for strict CSP sites. · omb.org.cn, 15 Oct 2026
- Hosting and compliance
- The privacy policy says data is hosted in mainland China on Aliyun and that OMB complies with China's PIPL and, where applicable, the EU GDPR. · omb.org.cn, 8 Oct 2026
- Installation
- The installer command is curl -fsSL https://api.omb.org.cn/install.sh | sh and it configures the CLI, agents and full extension. · omb.org.cn, 15 Oct 2026
- Intended users
- The install page recommends the full edition for agent developers and power users, while Lite is positioned for managed Chrome environments where unpacked extensions are blocked. · omb.org.cn, 8 Oct 2026
- Limit: Lite debugger gap
- The Lite store build does not include chrome.debugger, CDP attachment, webRequest header rewriting or anti-detection content scripts. · chromewebstore.google.com, 15 Oct 2026
- Limit: product scope
- The store listing says OMB does not provide a cloud agent, remote browser sessions, crawler service, automation-as-a-service platform, dedicated model routing or a chat sidebar. · chromewebstore.google.com, 15 Oct 2026
- Local session privacy
- The privacy policy says browser cookies, login state, passwords, and browsing history stay in the local browser and are not uploaded to OMB servers. · omb.org.cn, 8 Oct 2026
Where Oh My Browser stands on Freedom251
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