Caid — the complete, unedited output of the deterministic mcptrustchecker engine v1.9.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.9.0",
"methodologyVersion": "mcptrustchecker-1.9"
},
"target": {
"id": "caid-mcp",
"source": {
"kind": "package",
"origin": "caid-mcp"
},
"server": {
"name": "caid-mcp"
}
},
"grade": "A",
"score": {
"score": 92,
"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": "none",
"label": "publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read",
"appliedPenalty": 2
},
{
"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": [
"ingests untrusted external content (a prompt-injection entry point)",
"can execute shell commands or code"
],
"tags": [
"code-exec",
"untrusted-input"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (107 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 \"shell_object\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"shell_object\" appears to run shell commands or evaluate code (keyword \"shell\" in tool name). 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": "shell_object"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (caid_mcp/core.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`caid_mcp/core.py:237`): 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": "caid_mcp/core.py"
},
"evidence": "try: proc = subprocess.run( [sys.executable, \"-c\", script], capture_output=True, tex",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "caid_mcp/core.py",
"line": 237,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (caid_mcp/tools/advanced.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`caid_mcp/tools/advanced.py:53`): 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": "caid_mcp/tools/advanced.py"
},
"evidence": "try: proc = subprocess.run( [sys.executable, \"-c\", wrapper], capture_output=True,",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "caid_mcp/tools/advanced.py",
"line": 53,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (caid_mcp/tools/parts_user.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`caid_mcp/tools/parts_user.py:154`): 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": "caid_mcp/tools/parts_user.py"
},
"evidence": "try: proc = subprocess.run( [sys.executable, \"-c\", wrapper], capture_output=True, te",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "caid_mcp/tools/parts_user.py",
"line": 154,
"nonRuntime": false
}
},
{
"ruleId": "MTC-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([freecad_library_browse, freecad_library_import]) co-exist with external-action tools ([shell_object]). A prompt injection could cause unwanted external actions, though no direct sensitive-data leak path was found.",
"remediation": "Require confirmation for state-changing/egress actions triggered after processing untrusted content.",
"location": {
"kind": "flow",
"name": "freecad_library_browse → shell_object"
},
"evidence": "untrusted [freecad_library_browse, freecad_library_import] → sinks [shell_object]",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"freecad_library_browse",
"freecad_library_import"
],
"sinks": [
"shell_object"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"shell_object\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"shell_object\" 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": "shell_object"
},
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in packaging/dev tooling (tests/test_caid_mcp.py)",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "In a packaging/dev/install script (shipped, but not the server runtime) (`tests/test_caid_mcp.py:529`): 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": "tests/test_caid_mcp.py"
},
"evidence": "\"scene\": scene} exec(\"result = caid.box(5, 5, 5)\", exec_globals) assert \"result\" in exec_globals",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "tests/test_caid_mcp.py",
"line": 529,
"nonRuntime": true
}
},
{
"ruleId": "MTC-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"caid-mcp\" declares no repository URL, so its published artifact cannot be compared against reviewable source.",
"remediation": "Prefer packages that link to public, reviewable source.",
"location": {
"kind": "package",
"name": "caid-mcp"
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"freecad_library_browse",
"freecad_library_import"
],
"sensitiveSource": [],
"externalSink": [
"shell_object"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "run_cadquery_script",
"tags": [],
"reasons": {}
},
{
"tool": "create_linear_pattern",
"tags": [],
"reasons": {}
},
{
"tool": "create_circular_pattern",
"tags": [],
"reasons": {}
},
{
"tool": "create_assembly",
"tags": [],
"reasons": {}
},
{
"tool": "assembly_add",
"tags": [],
"reasons": {}
},
{
"tool": "assembly_move",
"tags": [],
"reasons": {}
},
{
"tool": "assembly_rotate",
"tags": [],
"reasons": {}
},
{
"tool": "assembly_merge",
"tags": [],
"reasons": {}
},
{
"tool": "boolean_union",
"tags": [],
"reasons": {}
},
{
"tool": "boolean_cut",
"tags": [],
"reasons": {}
},
{
"tool": "boolean_intersect",
"tags": [],
"reasons": {}
},
{
"tool": "combine_objects",
"tags": [],
"reasons": {}
},
{
"tool": "create_belt_wire",
"tags": [],
"reasons": {}
},
{
"tool": "create_array_on_curve",
"tags": [],
"reasons": {}
},
{
"tool": "create_pulley_assembly",
"tags": [],
"reasons": {}
},
{
"tool": "create_line",
"tags": [],
"reasons": {}
},
{
"tool": "create_arc",
"tags": [],
"reasons": {}
},
{
"tool": "create_circle",
"tags": [],
"reasons": {}
},
{
"tool": "create_polyline",
"tags": [],
"reasons": {}
},
{
"tool": "create_spline",
"tags": [],
"reasons": {}
},
{
"tool": "offset_curve",
"tags": [],
"reasons": {}
},
{
"tool": "project_curve",
"tags": [],
"reasons": {}
},
{
"tool": "fillet_wire_corners",
"tags": [],
"reasons": {}
},
{
"tool": "extend_curve",
"tags": [],
"reasons": {}
},
{
"tool": "chamfer_wire_corners",
"tags": [],
"reasons": {}
},
{
"tool": "join_curves",
"tags": [],
"reasons": {}
},
{
"tool": "reverse_curve",
"tags": [],
"reasons": {}
},
{
"tool": "extrude_surface",
"tags": [],
"reasons": {}
},
{
"tool": "unroll_surface",
"tags": [],
"reasons": {}
},
{
"tool": "render_object",
"tags": [],
"reasons": {}
},
{
"tool": "render_scene",
"tags": [],
"reasons": {}
},
{
"tool": "compare_renders",
"tags": [],
"reasons": {}
},
{
"tool": "export_stl",
"tags": [],
"reasons": {}
},
{
"tool": "export_step",
"tags": [],
"reasons": {}
},
{
"tool": "export_brep",
"tags": [],
"reasons": {}
},
{
"tool": "list_fastener_sizes",
"tags": [],
"reasons": {}
},
{
"tool": "create_bolt",
"tags": [],
"reasons": {}
},
{
"tool": "create_nut",
"tags": [],
"reasons": {}
},
{
"tool": "create_washer",
"tags": [],
"reasons": {}
},
{
"tool": "add_clearance_hole",
"tags": [],
"reasons": {}
},
{
"tool": "add_tap_hole",
"tags": [],
"reasons": {}
},
{
"tool": "check_object_valid",
"tags": [],
"reasons": {}
},
{
"tool": "heal_object",
"tags": [],
"reasons": {}
},
{
"tool": "simplify_object",
"tags": [],
"reasons": {}
},
{
"tool": "save_snapshot",
"tags": [],
"reasons": {}
},
{
"tool": "restore_snapshot",
"tags": [],
"reasons": {}
},
{
"tool": "list_snapshots",
"tags": [],
"reasons": {}
},
{
"tool": "undo",
"tags": [],
"reasons": {}
},
{
"tool": "import_step",
"tags": [],
"reasons": {}
},
{
"tool": "import_brep",
"tags": [],
"reasons": {}
},
{
"tool": "add_hole",
"tags": [],
"reasons": {}
},
{
"tool": "fillet_solid_edges",
"tags": [],
"reasons": {}
},
{
"tool": "chamfer_solid_edges",
"tags": [],
"reasons": {}
},
{
"tool": "shell_object",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"keyword \"shell\" in tool name"
]
}
},
{
"tool": "freecad_library_browse",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"browse\""
]
}
},
{
"tool": "freecad_library_search",
"tags": [],
"reasons": {}
},
{
"tool": "freecad_library_import",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "scan_part_library",
"tags": [],
"reasons": {}
},
{
"tool": "search_parts",
"tags": [],
"reasons": {}
},
{
"tool": "find_parts",
"tags": [],
"reasons": {}
},
{
"tool": "import_part",
"tags": [],
"reasons": {}
},
{
"tool": "list_warehouse_parts",
"tags": [],
"reasons": {}
},
{
"tool": "list_warehouse_sizes",
"tags": [],
"reasons": {}
},
{
"tool": "create_warehouse_fastener",
"tags": [],
"reasons": {}
},
{
"tool": "create_warehouse_bearing",
"tags": [],
"reasons": {}
},
{
"tool": "create_box",
"tags": [],
"reasons": {}
},
{
"tool": "create_cylinder",
"tags": [],
"reasons": {}
},
{
"tool": "create_sphere",
"tags": [],
"reasons": {}
},
{
"tool": "create_cone",
"tags": [],
"reasons": {}
},
{
"tool": "create_torus",
"tags": [],
"reasons": {}
},
{
"tool": "create_extruded_polygon",
"tags": [],
"reasons": {}
},
{
"tool": "create_revolved_profile",
"tags": [],
"reasons": {}
},
{
"tool": "list_edges",
"tags": [],
"reasons": {}
},
{
"tool": "list_faces",
"tags": [],
"reasons": {}
},
{
"tool": "measure_distance",
"tags": [],
"reasons": {}
},
{
"tool": "inspect_object",
"tags": [],
"reasons": {}
},
{
"tool": "mass_properties",
"tags": [],
"reasons": {}
},
{
"tool": "find_edges_near_point",
"tags": [],
"reasons": {}
},
{
"tool": "find_faces_near_point",
"tags": [],
"reasons": {}
},
{
"tool": "list_objects",
"tags": [],
"reasons": {}
},
{
"tool": "delete_object",
"tags": [],
"reasons": {}
},
{
"tool": "duplicate_object",
"tags": [],
"reasons": {}
},
{
"tool": "clear_scene",
"tags": [],
"reasons": {}
},
{
"tool": "server_info",
"tags": [],
"reasons": {}
},
{
"tool": "set_object_properties",
"tags": [],
"reasons": {}
},
{
"tool": "get_object_properties",
"tags": [],
"reasons": {}
},
{
"tool": "create_group",
"tags": [],
"reasons": {}
},
{
"tool": "ungroup",
"tags": [],
"reasons": {}
},
{
"tool": "list_groups",
"tags": [],
"reasons": {}
},
{
"tool": "create_layer",
"tags": [],
"reasons": {}
},
{
"tool": "list_layers",
"tags": [],
"reasons": {}
},
{
"tool": "split_with_plane",
"tags": [],
"reasons": {}
},
{
"tool": "split_with_object",
"tags": [],
"reasons": {}
},
{
"tool": "intersect_curves",
"tags": [],
"reasons": {}
},
{
"tool": "sweep_along_path",
"tags": [],
"reasons": {}
},
{
"tool": "sweep_circle_along_path",
"tags": [],
"reasons": {}
},
{
"tool": "loft_profiles",
"tags": [],
"reasons": {}
},
{
"tool": "loft_circle_to_rect",
"tags": [],
"reasons": {}
},
{
"tool": "translate_object",
"tags": [],
"reasons": {}
},
{
"tool": "rotate_object",
"tags": [],
"reasons": {}
},
{
"tool": "scale_object",
"tags": [],
"reasons": {}
},
{
"tool": "mirror_object",
"tags": [],
"reasons": {}
},
{
"tool": "orient_object",
"tags": [],
"reasons": {}
},
{
"tool": "align_objects",
"tags": [],
"reasons": {}
},
{
"tool": "distribute_objects",
"tags": [],
"reasons": {}
},
{
"tool": "section_view",
"tags": [],
"reasons": {}
},
{
"tool": "exploded_view",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "b53772a24e310ec7aa3c779b3d61701cca5b4f72a8710e56c54d181723e3c6b8",
"stats": {
"tools": 107,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 4,
"medium": 1,
"low": 2,
"info": 1
}
}
}