public-browser (Silbercue/public-browser) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 3 tools. No publisher has claimed this listing.
Lets Claude Code and Cursor drive Chrome. Browse your real profile: -30% tokens, -25% cost, -41% tool calls, -34% tool defs, +40% faster. Direct CDP, a11y-tree refs, server-side plan executor. MIT, no paid tier.
Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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Silbercue
Source: Glama · also listed on github_repo_search
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The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
inspect_elementInspect CSS + geometry (Pro)
late_toolRegistered too late
too_earlyNo delegate yet
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening
Zod denial of service vulnerability
CHROME_PATHGoogle Chrome, Chromium, or any Chromium-based browser (auto-detected on macOS/Linux/Windows; override with )PUBLIC_BROWSER_CORTEX_DIRPUBLIC_BROWSER_PROFILE"Julian" npx public-browserPUBLIC_BROWSER_TELEMETRY1 / true — (disabled) Opt-in: upload anonymised Cortex patterns to the community endpointPUBLIC_BROWSER_TELEMETRY_ENDPOINTURL https://cortex.public-browser.dev/v1/patterns Override the telemetry collection endpoint (must be HTTPS)ProgramFilesProgramFiles(x86)SILBERCUE_CHROME_DIFF_RETRY_MSSILBERCUE_CHROME_DIFF_SETTLE_MSSILBERCUE_CHROME_FULL_TOOLSSILBERCUE_CHROME_HEADLESStrue / false false Opt-in headless mode for CI/server environmentsSILBERCUE_CHROME_MINIMAL_TOOLSSILBERCUE_CHROME_PORT1–65535 9222 CDP debugging port. Non-default values spawn an isolated Chrome instance (separate --user-data-dir) that won't conflict with the user's browserSILBERCUE_CHROME_PROFILEpath — Chrome user profile directory (auto-launch only)SILBERCUE_PUBLISH_BRANCHSILBERCUE_PUBLISH_REMOTESILBERCUE_SCRIPT_PORTTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
3/3 tools missing one or more hints — inspect_element (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); late_tool (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); too_early (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
Only 0/2 tool handlers declare input schemas (0%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 0/2 tool handlers wrap calls in try/catch (0%)
Wrap each tool handler body in try/catch and return a structured error response.
Tool test coverage
Only 0/3 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
1 child_process call — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Dev dependencies
2 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Dependency freshness
1/4 production deps stale: pngjs@2023-02-20 (3.3y)
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