Expo Metro — the complete, unedited output of the deterministic mcptrustchecker engine v1.8.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.8.0",
"methodologyVersion": "mcptrustchecker-1.8"
},
"target": {
"id": "@synnode/expo-metro-mcp",
"source": {
"kind": "package",
"origin": "@synnode/expo-metro-mcp"
},
"server": {
"name": "@synnode/expo-metro-mcp"
}
},
"grade": "B",
"score": {
"score": 89,
"threatScore": 100,
"grade": "B",
"band": "B",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "client",
"term": "capability-exposure",
"level": "critical",
"label": "capability blast radius (critical) — client exposure if the model is manipulated",
"appliedPenalty": 10
},
{
"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-1.8"
},
"capability": {
"level": "critical",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code",
"untrusted input can reach code execution"
],
"tags": [
"untrusted-input",
"sensitive-source",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (26 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-002",
"title": "Shell/command execution in server code (dist/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:15`): 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": "dist/index.js"
},
"evidence": "child_process",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/index.js",
"line": 15
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "get_logs",
"tags": [
"untrusted-input",
"sensitive-source"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
],
"sensitive-source": [
"keyword \"get_logs\""
]
}
},
{
"tool": "get_errors",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "get_status",
"tags": [],
"reasons": {}
},
{
"tool": "connect",
"tags": [],
"reasons": {}
},
{
"tool": "disconnect",
"tags": [],
"reasons": {}
},
{
"tool": "clear_logs",
"tags": [],
"reasons": {}
},
{
"tool": "watch_logs",
"tags": [],
"reasons": {}
},
{
"tool": "reload",
"tags": [],
"reasons": {}
},
{
"tool": "resolve_stack",
"tags": [],
"reasons": {}
},
{
"tool": "list_devices",
"tags": [],
"reasons": {}
},
{
"tool": "screenshot",
"tags": [],
"reasons": {}
},
{
"tool": "tap",
"tags": [],
"reasons": {}
},
{
"tool": "swipe",
"tags": [],
"reasons": {}
},
{
"tool": "input_text",
"tags": [],
"reasons": {}
},
{
"tool": "input_key",
"tags": [],
"reasons": {}
},
{
"tool": "evaluate",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_get",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_set",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_remove",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_keys",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_get_json",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_set_json",
"tags": [],
"reasons": {}
},
{
"tool": "mmkv_merge_json",
"tags": [],
"reasons": {}
},
{
"tool": "zustand_persist_get",
"tags": [],
"reasons": {}
},
{
"tool": "zustand_persist_set",
"tags": [],
"reasons": {}
},
{
"tool": "zustand_persist_merge",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "44fea80906decfcc70612b6195bb66fe3502d09ac435d460eea8812e5ab42e35",
"stats": {
"tools": 26,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 0,
"low": 0,
"info": 0
}
}
}