Roblox — 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": "roblox-mcp-server",
"source": {
"kind": "package",
"origin": "roblox-mcp-server"
},
"server": {
"name": "roblox-mcp-server"
}
},
"grade": "B",
"score": {
"score": 86,
"threatScore": 93,
"grade": "B",
"band": "B",
"categorySubtotals": {
"injection": 6.3,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 1.2,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-SRC-009",
"category": "injection",
"severity": "medium",
"confidence": "strong",
"rawWeight": 9,
"confidenceMult": 0.7,
"diminishingFactor": 1,
"appliedPenalty": 6.3
},
{
"kind": "threat",
"ruleId": "MTC-SUP-010",
"category": "supply-chain",
"severity": "low",
"confidence": "heuristic",
"rawWeight": 3,
"confidenceMult": 0.4,
"diminishingFactor": 1,
"appliedPenalty": 1.2
},
{
"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",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code"
],
"tags": [
"sensitive-source",
"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 (34 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/cli/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/cli/index.js:385`): 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/cli/index.js"
},
"evidence": "} = await import(\"node:child_process\"); const tries = process.platform === \"darwin\" ? [[\"pbcopy\", []]]",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/cli/index.js",
"line": 385,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/platform/windows-screenshot.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/platform/windows-screenshot.js:1`): 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/platform/windows-screenshot.js"
},
"evidence": "port { execSync } from \"child_process\"; import fs from \"fs\"; import os from \"os\"; import path from \"path\"; export functi",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/platform/windows-screenshot.js",
"line": 1,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (dist/http/routes/api/avatar.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`dist/http/routes/api/avatar.js:9`): 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": "dist/http/routes/api/avatar.js"
},
"evidence": "const robloxRes = await fetch(`https://thumbnails.roblox.com/v1/users/avatar-headshot?userIds=${encodeURIComponent(userI",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "dist/http/routes/api/avatar.js",
"line": 9,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-009",
"title": "Untrusted input concatenated into a command sink (dist/platform/windows-screenshot.js)",
"category": "injection",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`dist/platform/windows-screenshot.js:60`): A shell/process command assembled from concatenated or interpolated values is command injection when any part is attacker-influenced — the OWASP canonical RCE flow. Verify what reaches the interpolated value. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "dist/platform/windows-screenshot.js"
},
"evidence": "\"); const raw = execSync(`powershell -NoProfile -NonInteractive -ExecutionPolicy Bypass -File \"${tmpFile}\"`, { e",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-009",
"file": "dist/platform/windows-screenshot.js",
"line": 60,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-005",
"title": "Dynamic module load from a non-literal (dist/tools/impl/hydroxide/spy-closure.js)",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "In the server's implementation (`dist/tools/impl/hydroxide/spy-closure.js:13`): Loading a module chosen at runtime (from a variable) can pull in and run attacker-influenced code paths. 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/tools/impl/hydroxide/spy-closure.js"
},
"evidence": "get function. Example: 'require(game.ReplicatedStorage.Combat).Validate' or 'game:GetService(\\\"Players\\\").LocalPlayer.Ch",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-005",
"file": "dist/tools/impl/hydroxide/spy-closure.js",
"line": 13,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in packaging/dev tooling (scripts/install-harnesses.mjs)",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "In a packaging/dev/install script (shipped, but not the server runtime) (`scripts/install-harnesses.mjs:2`): 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": "scripts/install-harnesses.mjs"
},
"evidence": "spawnSync } from \"node:child_process\"; import fs from \"node:fs/promises\"; import fsSync from \"node:fs\"; import os from",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "scripts/install-harnesses.mjs",
"line": 2,
"nonRuntime": true
}
},
{
"ruleId": "MTC-SUP-010",
"title": "Package runs install-time scripts (postinstall)",
"category": "supply-chain",
"severity": "low",
"confidence": "heuristic",
"description": "\"roblox-mcp-server\" executes postinstall script(s) at install time. An install hook runs at install time; most are routine build/setup, but review what it does before trusting it.",
"remediation": "Review the scripts; install with --ignore-scripts where possible and vet what they do.",
"location": {
"kind": "package",
"name": "roblox-mcp-server"
},
"evidence": "node scripts/postinstall.mjs",
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"scripts": [
"postinstall"
]
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "list-clients",
"tags": [],
"reasons": {}
},
{
"tool": "set-active-client",
"tags": [],
"reasons": {}
},
{
"tool": "execute-file",
"tags": [],
"reasons": {}
},
{
"tool": "execute",
"tags": [],
"reasons": {}
},
{
"tool": "hot-reload",
"tags": [],
"reasons": {}
},
{
"tool": "click-button",
"tags": [],
"reasons": {}
},
{
"tool": "type-text-box",
"tags": [],
"reasons": {}
},
{
"tool": "ensure-hydroxide",
"tags": [],
"reasons": {}
},
{
"tool": "hydroxide-list-modules",
"tags": [],
"reasons": {}
},
{
"tool": "hydroxide-scan-constants",
"tags": [],
"reasons": {}
},
{
"tool": "hydroxide-scan-upvalues",
"tags": [],
"reasons": {}
},
{
"tool": "hydroxide-spy-closure",
"tags": [],
"reasons": {}
},
{
"tool": "dump-visible-ui",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"dump\""
]
}
},
{
"tool": "get-console-output",
"tags": [],
"reasons": {}
},
{
"tool": "get-data-by-code",
"tags": [],
"reasons": {}
},
{
"tool": "get-descendants-tree",
"tags": [],
"reasons": {}
},
{
"tool": "get-game-info",
"tags": [],
"reasons": {}
},
{
"tool": "get-script-content",
"tags": [],
"reasons": {}
},
{
"tool": "script-grep",
"tags": [],
"reasons": {}
},
{
"tool": "search-instances",
"tags": [],
"reasons": {}
},
{
"tool": "semantic-search-scripts",
"tags": [],
"reasons": {}
},
{
"tool": "block-remote",
"tags": [],
"reasons": {}
},
{
"tool": "clear-remote-spy-logs",
"tags": [],
"reasons": {}
},
{
"tool": "ensure-remote-spy",
"tags": [],
"reasons": {}
},
{
"tool": "get-remote-spy-logs",
"tags": [],
"reasons": {}
},
{
"tool": "ignore-remote",
"tags": [],
"reasons": {}
},
{
"tool": "subscribe-remote",
"tags": [],
"reasons": {}
},
{
"tool": "ensure-scanX",
"tags": [],
"reasons": {}
},
{
"tool": "scanX-callers",
"tags": [],
"reasons": {}
},
{
"tool": "scanX-memory",
"tags": [],
"reasons": {}
},
{
"tool": "scanX-remotes",
"tags": [],
"reasons": {}
},
{
"tool": "scanX-scripts",
"tags": [],
"reasons": {}
},
{
"tool": "list-roblox-windows",
"tags": [],
"reasons": {}
},
{
"tool": "screenshot-window",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "336aba9d65ee07530013dd29c36a39792c19606fb7f6bea51efa0950baef3352",
"stats": {
"tools": 34,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 2,
"medium": 3,
"low": 2,
"info": 0
}
}
}