registry / record
@browserbasehq/mcp
Does @browserbasehq/mcp MCP work in Claude Code and Cursor? Throne executed @browserbasehq/mcp mcp in a single-use Firecracker microVM and replayed both recorded client behaviours. Compatibility verdict: fit. Is @browserbasehq/mcp mcp safe? Static security scan: 1 finding(s) to review under security ruleset v1. The full per-step results, security findings, scan date, and evidence hash are below.
> throne registry @browserbasehq/mcp
sealed
- scan id
- d3d2b3a32d414dae96957abcbb8c2cbf
- target
- @browserbasehq/mcp
- sealed at
- 2026-06-16 17:22:49Z
- evidence hash
- sha256:fb8629c0e6cc6db7c76b6e935af87c799d3fcda18f4ab29f6c0e4716ffac770b
initialize ok: server Browserbase MCP Server 3.0.0, negotiated protocolVersion 2025-11-25, capabilities ['resources', 'tools']
supported: tools/list (6 tools), resources/list (0); method not found (tolerated): prompts/list
all 6 tool inputSchemas are valid JSON Schema
called 6 of 6 tools (cap 10, strategy=serial): 1 ok, 5 returned tool-level errors (expected for synthesized args)
structured error responses, connection survived, wrong_type_args: start:accepted (returned result); end:accepted (returned result); navigate:accepted (returned result); act:accepted (returned result); observe:accepted (returned result); unknown_method: error(-32601); invalid_id: no response (silent), connection alive; oversized_input: accepted (returned result); recovery: accepted (returned result); cancellation: accepted (returned result); old_version: accepted old version 2024-10-07, negotiated 2024-10-07, server may have stale protocol handling
no streaming-capable tool declared by this server
server declares resources but lists none
ladder 1 overlapping start calls: max_observed_stable_concurrency=1; all ids answered exactly once, but every call returned an error (tool-level isError result), the tool may need runtime dependencies this sandbox does not provide
transport closed and relaunched; re-handshake ok (protocolVersion 2025-11-25, first session was 2025-11-25)
initialize ok: server Browserbase MCP Server 3.0.0, negotiated protocolVersion 2025-11-25, capabilities ['resources', 'tools'] [request_strategy=pipelined, connection_count=2, second connection established]
supported: tools/list (6 tools), resources/list (0); method not found (tolerated): prompts/list; notes: connection 2 confirms 6 tools
all 6 tool inputSchemas are valid JSON Schema
called 6 of 6 tools (cap 10, strategy=pipelined): 1 ok, 5 returned tool-level errors (expected for synthesized args)
structured error responses, connection survived, wrong_type_args: start:accepted (returned result); end:accepted (returned result); navigate:accepted (returned result); act:accepted (returned result); observe:accepted (returned result); unknown_method: error(-32601); invalid_id: no response (silent), connection alive; oversized_input: accepted (returned result); recovery: accepted (returned result); cancellation: accepted (returned result); old_version: accepted old version 2024-10-07, negotiated 2024-10-07, server may have stale protocol handling
no streaming-capable tool declared by this server
server declares resources but lists none
ladder 1/2/4/6 overlapping start calls: max_observed_stable_concurrency=6; all ids answered exactly once, but every call returned an error (tool-level isError result), the tool may need runtime dependencies this sandbox does not provide
transport closed and relaunched; re-handshake ok (protocolVersion 2025-11-25, first session was 2025-11-25)
2 non-local endpoint host(s) referenced in code, verify each is expected for this server's purpose: docs.browserbase.com (package/config.d.ts:14), www.browserbase.com (package/dist/sessionManager.js:141)
package/config.d.ts:14- target
- @browserbasehq/mcp npm
- engine
- sandboxed
- claude code
- calibration: partial recorded=9,spec=0,assumed=9
- cursor
- calibration: partial recorded=11,spec=0,assumed=7
- chatgpt desktop
- calibration: unavailable recorded=0,spec=2,assumed=16
- steps exercised
- 14 of 18
- test suite
- v1.0.0
- security ruleset
- v1.0.0
- sealed at
- 2026-06-16 17:22:49Z
- evidence hash
- sha256:fb8629c0e6cc6db7c76b6e935af87c799d3fcda18f4ab29f6c0e4716ffac770b
- valid until
- 2026-09-14
paste this in your README. it renders the live verdict and links back to this record. if a release ever breaks the verdict, the badge says so on its own.
[](https://usethrone.dev/server/browserbasehq-mcp)maintainer of this server? challenge this record: hello@usethrone.dev. tell us what we got wrong and we re-run it in the open.
this page renders the stored record of a real run. nothing on it is asserted without the execution that proved it.