Lighter — 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": "lighter-mcp",
"source": {
"kind": "package",
"origin": "lighter-mcp"
},
"server": {
"name": "lighter-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": [
"ingests untrusted external content (a prompt-injection entry point)",
"can execute shell commands or code"
],
"tags": [
"untrusted-input",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (23 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 (lighter_mcp/installer.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`lighter_mcp/installer.py:183`): 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": "lighter_mcp/installer.py"
},
"evidence": "est: Path) -> None: subprocess.run( [\"git\", \"clone\", \"--depth\", \"1\", \"--single-branch\", url, str(dest)],",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "lighter_mcp/installer.py",
"line": 183,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (lighter_mcp/price_watcher.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`lighter_mcp/price_watcher.py:188`): 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": "lighter_mcp/price_watcher.py"
},
"evidence": "'\\\\\"') try: subprocess.run( [ \"osascript\", \"-e\",",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "lighter_mcp/price_watcher.py",
"line": 188,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "lighter_version",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_live_modify_order",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_live_cancel_order",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_live_cancel_all",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_live_set_leverage",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_set_tier",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_status",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_positions",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "lighter_paper_health",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_liquidation_price",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_refresh",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_market_order",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_paper_ioc_order",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_system_status",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_market_info",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_market_trades",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_market_funding",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_auth_status",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_account_apikeys",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_account_limits",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_portfolio_performance",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_orders_open",
"tags": [],
"reasons": {}
},
{
"tool": "lighter_orders_history",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "316a7e97542915c77a9ddfc6ac81d7318f4debb23f3f6af084b2fce9fdfabcf6",
"stats": {
"tools": 23,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 2,
"medium": 0,
"low": 0,
"info": 0
}
}
}