Petro — the complete, unedited output of the deterministic mcptrustchecker engine v1.9.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.9.0",
"methodologyVersion": "mcptrustchecker-1.9"
},
"target": {
"id": "petro-mcp",
"source": {
"kind": "package",
"origin": "petro-mcp"
},
"server": {
"name": "petro-mcp"
}
},
"grade": "A",
"score": {
"score": 98,
"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": "minimal",
"label": "capability blast radius (minimal) — client exposure if the model is manipulated",
"appliedPenalty": 0
},
{
"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-1.9"
},
"capability": {
"level": "minimal",
"reasons": [],
"tags": []
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (19 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 packaging/dev tooling (tests/test_server.py)",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "In a packaging/dev/install script (shipped, but not the server runtime) (`tests/test_server.py:73`): 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": "tests/test_server.py"
},
"evidence": "self): result = subprocess.run( [sys.executable, \"-m\", \"petro_mcp.server\", \"--list-tools\"],",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "tests/test_server.py",
"line": 73,
"nonRuntime": true
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"petro-mcp\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "petro-mcp"
}
},
{
"ruleId": "MTC-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"petro-mcp\" 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": "petro-mcp"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "read_las",
"tags": [],
"reasons": {}
},
{
"tool": "get_curve_values",
"tags": [],
"reasons": {}
},
{
"tool": "compare_logs",
"tags": [],
"reasons": {}
},
{
"tool": "query_production",
"tags": [],
"reasons": {}
},
{
"tool": "fit_decline",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_eur",
"tags": [],
"reasons": {}
},
{
"tool": "pz_analysis",
"tags": [],
"reasons": {}
},
{
"tool": "volumetric_ooip",
"tags": [],
"reasons": {}
},
{
"tool": "volumetric_ogip",
"tags": [],
"reasons": {}
},
{
"tool": "recovery_factor",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_pvt_properties",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_bubble_point",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_gas_z",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_vshale",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_density_porosity",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_archie_sw",
"tags": [],
"reasons": {}
},
{
"tool": "calculate_net_pay",
"tags": [],
"reasons": {}
},
{
"tool": "convert_oilfield_units",
"tags": [],
"reasons": {}
},
{
"tool": "list_oilfield_units",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "d93411bb040723c668b49ea98d1993d1c970efb2d740ef00e0a33bb0cdcae6ad",
"stats": {
"tools": 19,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 0,
"low": 1,
"info": 2
}
}
}