React Native Mcp Guide — 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": "@mrnitro360/react-native-mcp-guide",
"source": {
"kind": "package",
"origin": "@mrnitro360/react-native-mcp-guide"
},
"server": {
"name": "@mrnitro360/react-native-mcp-guide"
}
},
"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-1.13"
},
"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 (17 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 (build/tools/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`build/tools/index.js:475`): 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": "build/tools/index.js"
},
"evidence": "ggestions.push(\"Replace eval() with safer alternatives like JSON.parse()\"); } // Network security",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-001",
"file": "build/tools/index.js",
"line": 475,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (build/tools/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`build/tools/index.js:4`): 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": "build/tools/index.js"
},
"evidence": "; import { exec } from 'child_process'; import { promisify } from 'util'; /** * React Native Tools * * Provides tools",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "build/tools/index.js",
"line": 4,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (build/tools/index.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`build/tools/index.js:2077`): A hardcoded outbound call to a fixed external host inside server code is a classic exfiltration/telemetry channel — especially paired with reads of local data. 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": "build/tools/index.js"
},
"evidence": "const response = await fetch('https://api.github.com/repos/MrNitro360/React-Native-MCP/releases/latest'); i",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "build/tools/index.js",
"line": 2077,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"@mrnitro360/react-native-mcp-guide\" 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": "@mrnitro360/react-native-mcp-guide"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "analyze_component",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_codebase_performance",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_codebase_comprehensive",
"tags": [],
"reasons": {}
},
{
"tool": "upgrade_packages",
"tags": [],
"reasons": {}
},
{
"tool": "resolve_dependencies",
"tags": [],
"reasons": {}
},
{
"tool": "audit_packages",
"tags": [],
"reasons": {}
},
{
"tool": "migrate_packages",
"tags": [],
"reasons": {}
},
{
"tool": "optimize_performance",
"tags": [],
"reasons": {}
},
{
"tool": "architecture_advice",
"tags": [],
"reasons": {}
},
{
"tool": "debug_issue",
"tags": [],
"reasons": {}
},
{
"tool": "check_for_updates",
"tags": [],
"reasons": {}
},
{
"tool": "get_version_info",
"tags": [],
"reasons": {}
},
{
"tool": "remediate_code",
"tags": [],
"reasons": {}
},
{
"tool": "refactor_component",
"tags": [],
"reasons": {}
},
{
"tool": "generate_component_test",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_testing_strategy",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_test_coverage",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "39b40b1bce96704705d77d8910fd8d3c7c43a12f02ee30d87a45749bc0c6c115",
"stats": {
"tools": 17,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 2,
"medium": 1,
"low": 0,
"info": 1
}
}
}