cloud browsers for your agent, served over KERNEL's hosted mcp server. your agent launches stealth chromium sessions in <30ms, drives them with playwright, a persistent browser repl, or computer-use actions, reuses logged-in profiles and managed auth connections, and records replays.
- open cursor settings → plugins.
- search for KERNEL.
- click install, then sign in to KERNEL when prompted.
| component | path | purpose |
|---|---|---|
| mcp server | mcp.json |
our hosted mcp server at https://mcp.onkernel.com/mcp (streamable http) |
| skill | skills/kernel-mcp/SKILL.md |
when and how the agent should use the KERNEL mcp tools |
| category | tools |
|---|---|
| session lifecycle | manage_browsers creates, lists, updates, and deletes browser sessions and reads their telemetry. manage_browser_pools keeps pre-warmed browsers ready to acquire |
| driving a browser | execute_playwright_code, browser_repl, computer_action, webmcp, browser_curl, and exec_command |
| state and auth | manage_profiles saves cookies and local storage. manage_auth_connections runs managed auth for third-party sites. manage_proxies and manage_extensions configure proxies and chrome extensions |
| other | manage_replays records mp4 replays (paid plans). manage_apps invokes KERNEL apps. search_docs searches our documentation |
the hosted server is the source of truth for tool names and schemas.
the plugin carries no api key. when it connects, you sign in to KERNEL over oauth 2.1 in your browser. during authorization you can grant org-wide access or limit it to one KERNEL project.
the plugin only talks to https://mcp.onkernel.com. it runs no local code, hooks, or install scripts. browsers run in our cloud and bill to the KERNEL account you sign in with.
for ci or other headless setups, you can skip oauth and pass an api key instead:
{
"mcpServers": {
"kernel": {
"type": "http",
"url": "https://mcp.onkernel.com/mcp",
"headers": {
"Authorization": "Bearer YOUR_KERNEL_API_KEY"
}
}
}
}the mcp server is open source: kernel/kernel-mcp-server.
- docs: https://kernel.sh/docs
- sign up: https://kernel.sh
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