Index / devtools
Browserbase MCP Server
browserbase-mcp-server declares 9 capabilities across 9 tools, with 2 critical issues.
45/100 exposureElevated
Manifest recorded 2026-10-11 from tools/list answered by the npm package @browserbasehq/mcp-server-browserbase@2.4.3 (published to npm under the @browserbasehq scope), run in an isolated container with no network access and placeholder credentials. The date changes only when the manifest does. Not verified by a maintainer.
Note. Listed without the --experimental flag, which Browserbase's README says enables experimental features.
Issues
These describe what this server's manifest declares. A product can provide controls that MCP has no
way to express — token revocation, an admin console, audit logs — and this page cannot see them. The absence of a
declaration is not evidence that a control is absent.
critical · no-revocation · All 9 tools
9 of 9 tools declare no way for the customer to switch them off once granted. This applies to every tool because MCP has no field in which to declare a revocation mechanism; the product may provide one outside MCP that a manifest cannot show.
critical · irreversible-uncapped · 1 of 9 tools
1 tool is classified as irreversible and declares no limit.
high · no-expiry · All 9 tools
9 of 9 tools declare no expiry. This applies to every tool because MCP has no field in which to declare an expiry; the product may provide one outside MCP that a manifest cannot show.
high · no-audit-trail · All 9 tools
9 of 9 tools declare no record of their actions that the customer can read. This applies to every tool because MCP has no field in which to declare an audit requirement; the product may provide one outside MCP that a manifest cannot show.
high · uncapped-write · 6 of 9 tools
6 tools can modify data and declare no limit.
low · uncapped-read · 2 of 9 tools
2 tools can read data and declare no limit.
Declared capabilities
How each tool was read. declared means the server's own annotation said so — self-reported and
unverified. inferred is from the tool's name. assumed means nothing indicated either way.
| Tool | Read as | Basis |
|---|
browserbase_session_create | write |
inferred |
browserbase_session_close | delete |
inferred |
browserbase_stagehand_navigate | write |
assumed |
browserbase_stagehand_act | write |
assumed |
browserbase_stagehand_extract | write |
assumed |
browserbase_stagehand_observe | read |
inferred |
browserbase_screenshot | write |
assumed |
browserbase_stagehand_get_url | read |
inferred |
browserbase_stagehand_agent | write |
assumed |
Answering this question about your own agent? The self-serve
stack report applies the same reading to your own stack or server and gives you a dated
document you can hand to a customer's security review. It is generated in your browser, with nobody to wait for.
Buying one does not change this page, its score or its place in the index — see
Independence.
Maintain this server? If this page misreads your manifest, or your server has changed,
submit its current tools/list response and it will be re-scored and dated.
Corrections are published alongside the original, not in place of it.