prototype_assistant (llxxbb/mcp-prototype) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.
工具能力：\r\n\r\n- 提供导航栏。\r\n- 将标记与原型解耦。\r\n- 支持页面附加说明。\r\n\r\n
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
How we verified
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llxxbb
Source: mcp.so · also listed on modelscope
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Install from
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
Vitest Browser: Exposed Browser Mode API Can Proxy CDP and Overwrite Config Files, Leading to RCE
@vitest/browser: Browser Mode provider commands bypass the file-access permission gate
When Vitest UI server is listening, arbitrary file can be read and executed
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
MCP_PROTOTYPE_FILESMCP_PROTOTYPE_HTML_PATHMCP_PROTOTYPE_PATHDependencies
23 dependencies, 1 flagged: playwright
Tool 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
5/5 tools missing one or more hints — start (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); stop (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); getSpec (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +2 more. 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 test coverage
2/5 tools referenced in tests (40%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
10 child_process/subprocess calls in production code — runs shell commands (src/mcp/mcp-test.js:24, src/mcp/test-local.js:120, src/mcp/test-local.js:463)
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.13.3 (high), @modelcontextprotocol/sdk@1.13.3 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
4 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Dependency freshness
1/6 production deps stale: node-fetch@2023-11-30 (2.7y)
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