Raw scan report

Windows Computer Use — the complete, unedited output of the deterministic mcptrustchecker engine v1.9.0, scanned 2026-07-24. Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.

{
  "tool": {
    "name": "mcptrustchecker",
    "version": "1.9.0",
    "methodologyVersion": "mcptrustchecker-1.9"
  },
  "target": {
    "id": "windows-computer-use-mcp",
    "source": {
      "kind": "package",
      "origin": "windows-computer-use-mcp"
    },
    "server": {
      "name": "windows-computer-use-mcp"
    }
  },
  "grade": "A",
  "score": {
    "score": 93,
    "threatScore": 100,
    "grade": "A",
    "band": "A",
    "categorySubtotals": {
      "injection": 0,
      "exfiltration": 0,
      "permissions": 0,
      "supply-chain": 0,
      "network": 0,
      "hygiene": 0
    },
    "vector": [
      {
        "kind": "client",
        "term": "capability-exposure",
        "level": "high",
        "label": "capability blast radius (high) — client exposure if the model is manipulated",
        "appliedPenalty": 6
      },
      {
        "kind": "client",
        "term": "verification-discount",
        "level": "repo",
        "label": "publisher verification (public source) — no provenance, but the source is public and inspectable",
        "appliedPenalty": 1
      },
      {
        "kind": "client",
        "term": "coverage-honesty",
        "level": "source",
        "label": "inspection depth (source) — how much of the target the scan could see",
        "appliedPenalty": 0
      }
    ],
    "gatesFired": [],
    "methodologyVersion": "mcptrustchecker-1.9"
  },
  "capability": {
    "level": "high",
    "reasons": [
      "can execute shell commands or code"
    ],
    "tags": [
      "code-exec"
    ]
  },
  "coverage": {
    "level": "source",
    "inputs": {
      "toolSurface": true,
      "implementationSource": true,
      "packageMetadata": true,
      "liveTransport": false
    },
    "caveats": [
      "Tools were statically extracted from the published source (18 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command \"npx -y <package>\"."
    ]
  },
  "findings": [
    {
      "ruleId": "MTC-SRC-001",
      "title": "Dynamic code execution in server code (dist/index.js)",
      "category": "permissions",
      "severity": "high",
      "confidence": "strong",
      "description": "In the server's implementation (`dist/index.js:2895`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
      "remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
      "location": {
        "kind": "server",
        "name": "dist/index.js"
      },
      "evidence": "const makeValidate = new Function(`${names_1.default.self}`, `${names_1.default.scope}`, sourceCode); const val",
      "owasp": "LLM05:2025 Improper Output Handling",
      "data": {
        "rule": "MTC-SRC-001",
        "file": "dist/index.js",
        "line": 2895,
        "nonRuntime": false
      }
    }
  ],
  "toxicFlows": [],
  "capabilities": [
    {
      "tool": "screenshot",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "mouse_move",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "left_click",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "right_click",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "double_click",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "left_click_drag",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "scroll",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "type",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "key",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "hold_key",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "cursor_position",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "list_running_applications",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "get_frontmost_application",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "open_application",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "list_displays",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "read_clipboard",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "write_clipboard",
      "tags": [],
      "reasons": {}
    },
    {
      "tool": "zoom",
      "tags": [],
      "reasons": {}
    }
  ],
  "surfaceDigest": "c2378f4f5796f8277d62f414d5e53e4c863f49380dcef0ffe540f621acc2eb9b",
  "stats": {
    "tools": 18,
    "prompts": 0,
    "resources": 0,
    "findingsBySeverity": {
      "critical": 0,
      "high": 1,
      "medium": 0,
      "low": 0,
      "info": 0
    }
  }
}