Computer — the complete, unedited output of the deterministic mcptrustchecker engine v1.13.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.13.0",
"methodologyVersion": "mcptrustchecker-1.13"
},
"target": {
"id": "computer-mcp",
"source": {
"kind": "package",
"origin": "computer-mcp"
},
"server": {
"name": "computer-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-1.13"
},
"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 (37 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-CAP-001",
"title": "Tool \"spawn_terminal\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"spawn_terminal\" appears to run shell commands or evaluate code (keyword \"spawn\" in tool name, parameter \"command\"). Arbitrary execution driven by model input is one of the most dangerous MCP capabilities; combined with any untrusted input it becomes RCE.",
"remediation": "Sandbox execution, allowlist commands/arguments, and never pass model output to a shell unescaped.",
"location": {
"kind": "tool",
"name": "spawn_terminal"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/actions/accessibility_tree.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/actions/accessibility_tree.py:94`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/actions/accessibility_tree.py"
},
"evidence": "' result = subprocess.run( [\"osascript\", \"-e\", script], capture_output=Tr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/actions/accessibility_tree.py",
"line": 94,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/actions/focused_app.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/actions/focused_app.py:51`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/actions/focused_app.py"
},
"evidence": "''' result = subprocess.run( [\"osascript\", \"-e\", script], capture_output=True,",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/actions/focused_app.py",
"line": 51,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/actions/keyboard.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/actions/keyboard.py:246`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/actions/keyboard.py"
},
"evidence": "result = subprocess.run( [\"osascript\", \"-e\", script], capture_output=Tr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/actions/keyboard.py",
"line": 246,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/actions/window.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/actions/window.py:827`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/actions/window.py"
},
"evidence": "result_osascript = subprocess.run( [\"osascript\", \"-e\", script], capture_output=Tr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/actions/window.py",
"line": 827,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/core/utils.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/core/utils.py:227`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/core/utils.py"
},
"evidence": "' result = subprocess.run( [\"osascript\", \"-e\", script], capture_output=Tr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/core/utils.py",
"line": 227,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/handlers/accessibility_tree.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/handlers/accessibility_tree.py:86`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/handlers/accessibility_tree.py"
},
"evidence": "' result = subprocess.run( [\"osascript\", \"-e\", script], capture_output=Tr",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/handlers/accessibility_tree.py",
"line": 86,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/handlers/focused_app.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/handlers/focused_app.py:43`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/handlers/focused_app.py"
},
"evidence": "''' result = subprocess.run( [\"osascript\", \"-e\", script], capture_output=True,",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/handlers/focused_app.py",
"line": 43,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (computer_mcp/handlers/window.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`computer_mcp/handlers/window.py:1188`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. 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": "computer_mcp/handlers/window.py"
},
"evidence": "result_osascript = subprocess.run( [\"osascript\", \"-e\", script], capture_output=True",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "computer_mcp/handlers/window.py",
"line": 1188,
"nonRuntime": false
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"command\" on \"spawn_terminal\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"spawn_terminal\" takes a command-shaped parameter \"command\" with no enum/pattern constraint. Free-form, model- or attacker-controlled arguments reaching a shell is the command-injection precondition.",
"remediation": "Constrain the parameter (enum/pattern), or build the command from a fixed template with escaped args.",
"location": {
"kind": "tool",
"name": "spawn_terminal",
"field": "inputSchema.properties.command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "command"
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"shell\" on \"spawn_terminal\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"spawn_terminal\" takes a command-shaped parameter \"shell\" with no enum/pattern constraint. Free-form, model- or attacker-controlled arguments reaching a shell is the command-injection precondition.",
"remediation": "Constrain the parameter (enum/pattern), or build the command from a fixed template with escaped args.",
"location": {
"kind": "tool",
"name": "spawn_terminal",
"field": "inputSchema.properties.shell"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "shell"
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"spawn_terminal\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"spawn_terminal\" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.",
"remediation": "Declare accurate annotations, and gate destructive tools on user confirmation regardless.",
"location": {
"kind": "tool",
"name": "spawn_terminal"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "click",
"tags": [],
"reasons": {}
},
{
"tool": "double_click",
"tags": [],
"reasons": {}
},
{
"tool": "triple_click",
"tags": [],
"reasons": {}
},
{
"tool": "button_down",
"tags": [],
"reasons": {}
},
{
"tool": "button_up",
"tags": [],
"reasons": {}
},
{
"tool": "drag",
"tags": [],
"reasons": {}
},
{
"tool": "mouse_move",
"tags": [],
"reasons": {}
},
{
"tool": "type",
"tags": [],
"reasons": {}
},
{
"tool": "key_down",
"tags": [],
"reasons": {}
},
{
"tool": "key_up",
"tags": [],
"reasons": {}
},
{
"tool": "key_press",
"tags": [],
"reasons": {}
},
{
"tool": "screenshot",
"tags": [],
"reasons": {}
},
{
"tool": "set_config",
"tags": [],
"reasons": {}
},
{
"tool": "list_windows",
"tags": [],
"reasons": {}
},
{
"tool": "switch_to_window",
"tags": [],
"reasons": {}
},
{
"tool": "move_window",
"tags": [],
"reasons": {}
},
{
"tool": "resize_window",
"tags": [],
"reasons": {}
},
{
"tool": "minimize_window",
"tags": [],
"reasons": {}
},
{
"tool": "maximize_window",
"tags": [],
"reasons": {}
},
{
"tool": "restore_window",
"tags": [],
"reasons": {}
},
{
"tool": "set_window_topmost",
"tags": [],
"reasons": {}
},
{
"tool": "get_window_info",
"tags": [],
"reasons": {}
},
{
"tool": "close_window",
"tags": [],
"reasons": {}
},
{
"tool": "snap_window_left",
"tags": [],
"reasons": {}
},
{
"tool": "snap_window_right",
"tags": [],
"reasons": {}
},
{
"tool": "snap_window_top",
"tags": [],
"reasons": {}
},
{
"tool": "snap_window_bottom",
"tags": [],
"reasons": {}
},
{
"tool": "screenshot_window",
"tags": [],
"reasons": {}
},
{
"tool": "list_virtual_desktops",
"tags": [],
"reasons": {}
},
{
"tool": "switch_virtual_desktop",
"tags": [],
"reasons": {}
},
{
"tool": "move_window_to_virtual_desktop",
"tags": [],
"reasons": {}
},
{
"tool": "spawn_terminal",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"keyword \"spawn\" in tool name",
"parameter \"command\""
]
}
},
{
"tool": "list_terminals",
"tags": [],
"reasons": {}
},
{
"tool": "send_terminal_text",
"tags": [],
"reasons": {}
},
{
"tool": "read_terminal_output",
"tags": [],
"reasons": {}
},
{
"tool": "send_terminal_key",
"tags": [],
"reasons": {}
},
{
"tool": "close_terminal",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "58ad836611ffc2c9d908a0ae786c70682b69805e65cb046ba8bb10d04d1fb9fb",
"stats": {
"tools": 37,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 9,
"medium": 2,
"low": 1,
"info": 0
}
}
}