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@browserbasehq/mcp

npm / sealed 2026-06-12 / No. d02d36c6

> throne registry @browserbasehq/mcp sealed
receiptsealed evidence
scan id
d02d36c65abb4a1ba1676766d3b9ff87
target
@browserbasehq/mcp
sealed at
2026-06-12 06:52:06Z
evidence hash
sha256:621256d4335c97808d9c1c8fcf8cd4f6a812756a9553a73a971f183bbd367cc4
01connectPASS900ms

initialize ok: server Browserbase MCP Server 3.0.0, negotiated protocolVersion 2025-11-25, capabilities ['resources', 'tools']

02discoverPASS7ms

supported: tools/list (6 tools), resources/list (0); method not found (tolerated): prompts/list

03validate_schemasPASS1ms

all 6 tool inputSchemas are valid JSON Schema

04smoke_test_toolsPASS1.8s

called 6 of 6 tools (cap 10): 1 ok, 5 returned tool-level errors (expected for synthesized args)

05error_handlingPASS5.0s

structured error responses, connection survived — wrong_type_args: accepted (returned result); unknown_method: error(-32601); invalid_id: no response (silent), connection alive

06streamingPASS0ms

no streaming-capable tool declared by this server; not applicable (pass-na)

07resource_lifecyclePASS1ms

server declares resources but lists none; read skipped (pass-na)

08concurrent_callsWARN1.4s

ladder 1/2/4/8 overlapping start calls: max_observed_stable_concurrency=8; 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

09reconnectPASS871ms

transport closed and relaunched; re-handshake ok (protocolVersion 2025-11-25, first session was 2025-11-25)

01connectPASS912ms

initialize ok: server Browserbase MCP Server 3.0.0, negotiated protocolVersion 2025-11-25, capabilities ['resources', 'tools']

02discoverPASS6ms

supported: tools/list (6 tools), resources/list (0); method not found (tolerated): prompts/list

03validate_schemasPASS1ms

all 6 tool inputSchemas are valid JSON Schema

04smoke_test_toolsPASS1.9s

called 6 of 6 tools (cap 10): 1 ok, 5 returned tool-level errors (expected for synthesized args)

05error_handlingPASS4.9s

structured error responses, connection survived — wrong_type_args: accepted (returned result); unknown_method: error(-32601); invalid_id: no response (silent), connection alive

06streamingPASS0ms

no streaming-capable tool declared by this server; not applicable (pass-na)

07resource_lifecyclePASS1ms

server declares resources but lists none; read skipped (pass-na)

08concurrent_callsWARN1.3s

ladder 1/2/4/8 overlapping start calls: max_observed_stable_concurrency=8; 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

09reconnectPASS1.1s

transport closed and relaunched; re-handshake ok (protocolVersion 2025-11-25, first session was 2025-11-25)

chatgpt desktopemulation profile pending real-traffic captureCOMING SOON
SECURITY: REVIEW / 1 finding(s) / review material, not a verdict
LOWTHR-NET-05 / Hardcoded outbound endpoints

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
VERDICT: FIT TO SHIPSANDBOXED RUN — submitted server executed in a disposable microVM — compatibility: 0 fail / 2 warn across 2 clients / security: review — 1 finding(s), 0 highsealed by THRONE / No. d02d36c6 / 2026-06-12
THRONE: FIT TO SHIPwear the crown

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[![THRONE: FIT TO SHIP](https://api.usethrone.dev/api/badge/%40browserbasehq%2Fmcp)](https://usethrone.dev/server/browserbasehq-mcp)
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