Threlte — 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": "threlte-mcp",
"source": {
"kind": "package",
"origin": "threlte-mcp"
},
"server": {
"name": "threlte-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 send data / act on an external service",
"can execute shell commands or code"
],
"tags": [
"code-exec",
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (30 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_entity\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"spawn_entity\" appears to run shell commands or evaluate code (keyword \"spawn\" 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": "spawn_entity"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"spawn_entity\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"spawn_entity\" 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_entity"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "get_scene_state",
"tags": [],
"reasons": {}
},
{
"tool": "find_objects",
"tags": [],
"reasons": {}
},
{
"tool": "get_object_position",
"tags": [],
"reasons": {}
},
{
"tool": "log_positions",
"tags": [],
"reasons": {}
},
{
"tool": "set_camera_position",
"tags": [],
"reasons": {}
},
{
"tool": "save_camera_preset",
"tags": [],
"reasons": {}
},
{
"tool": "load_camera_preset",
"tags": [],
"reasons": {}
},
{
"tool": "list_camera_presets",
"tags": [],
"reasons": {}
},
{
"tool": "delete_camera_preset",
"tags": [],
"reasons": {}
},
{
"tool": "animate_camera_presets",
"tags": [],
"reasons": {}
},
{
"tool": "spawn_entity",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"keyword \"spawn\" in tool name"
]
}
},
{
"tool": "destroy_entity",
"tags": [],
"reasons": {}
},
{
"tool": "move_object",
"tags": [],
"reasons": {}
},
{
"tool": "set_transform",
"tags": [],
"reasons": {}
},
{
"tool": "set_visibility",
"tags": [],
"reasons": {}
},
{
"tool": "rename_entity",
"tags": [],
"reasons": {}
},
{
"tool": "duplicate_entity",
"tags": [],
"reasons": {}
},
{
"tool": "make_physical",
"tags": [],
"reasons": {}
},
{
"tool": "remove_physics",
"tags": [],
"reasons": {}
},
{
"tool": "apply_impulse",
"tags": [],
"reasons": {}
},
{
"tool": "set_gravity",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_gltf",
"tags": [],
"reasons": {}
},
{
"tool": "validate_asset",
"tags": [],
"reasons": {}
},
{
"tool": "optimize_gltf",
"tags": [],
"reasons": {}
},
{
"tool": "export_to_svelte",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"export_to\""
]
}
},
{
"tool": "load_asset",
"tags": [],
"reasons": {}
},
{
"tool": "apply_material",
"tags": [],
"reasons": {}
},
{
"tool": "set_environment",
"tags": [],
"reasons": {}
},
{
"tool": "apply_vibe",
"tags": [],
"reasons": {}
},
{
"tool": "get_bridge_status",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "29fde53d823dd949e51bb51b0184b4dcd154db3d30378c78f4d26dceb3ecdbc7",
"stats": {
"tools": 30,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 0,
"low": 1,
"info": 0
}
}
}