Emulate — 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": "mcp-emulate",
"source": {
"kind": "package",
"origin": "mcp-emulate"
},
"server": {
"name": "mcp-emulate"
}
},
"grade": "A",
"score": {
"score": 96,
"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": "moderate",
"label": "capability blast radius (moderate) — client exposure if the model is manipulated",
"appliedPenalty": 3
},
{
"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": "moderate",
"reasons": [
"reads sensitive or local data"
],
"tags": [
"sensitive-source"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (55 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_integration.py)",
"category": "permissions",
"severity": "low",
"confidence": "heuristic",
"description": "In a packaging/dev/install script (shipped, but not the server runtime) (`tests/test_server_integration.py:20`): 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_integration.py"
},
"evidence": "ne: self.proc = subprocess.Popen( [sys.executable, \"-m\", \"mcp_emulate.server\"], stdin=su",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "tests/test_server_integration.py",
"line": 20,
"nonRuntime": true
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"mcp-emulate\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "mcp-emulate"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "create_emulator",
"tags": [],
"reasons": {}
},
{
"tool": "destroy_emulator",
"tags": [],
"reasons": {}
},
{
"tool": "map_memory",
"tags": [],
"reasons": {}
},
{
"tool": "write_memory",
"tags": [],
"reasons": {}
},
{
"tool": "read_memory",
"tags": [],
"reasons": {}
},
{
"tool": "list_regions",
"tags": [],
"reasons": {}
},
{
"tool": "hexdump",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"dump\""
]
}
},
{
"tool": "search_memory",
"tags": [],
"reasons": {}
},
{
"tool": "snapshot_memory",
"tags": [],
"reasons": {}
},
{
"tool": "diff_memory",
"tags": [],
"reasons": {}
},
{
"tool": "get_stack",
"tags": [],
"reasons": {}
},
{
"tool": "memory_map",
"tags": [],
"reasons": {}
},
{
"tool": "add_watchpoint",
"tags": [],
"reasons": {}
},
{
"tool": "remove_watchpoint",
"tags": [],
"reasons": {}
},
{
"tool": "list_watchpoints",
"tags": [],
"reasons": {}
},
{
"tool": "set_registers",
"tags": [],
"reasons": {}
},
{
"tool": "get_registers",
"tags": [],
"reasons": {}
},
{
"tool": "get_fp_registers",
"tags": [],
"reasons": {}
},
{
"tool": "set_fp_registers",
"tags": [],
"reasons": {}
},
{
"tool": "emulate",
"tags": [],
"reasons": {}
},
{
"tool": "add_breakpoint",
"tags": [],
"reasons": {}
},
{
"tool": "remove_breakpoint",
"tags": [],
"reasons": {}
},
{
"tool": "list_breakpoints",
"tags": [],
"reasons": {}
},
{
"tool": "step",
"tags": [],
"reasons": {}
},
{
"tool": "save_context",
"tags": [],
"reasons": {}
},
{
"tool": "restore_context",
"tags": [],
"reasons": {}
},
{
"tool": "enable_trace",
"tags": [],
"reasons": {}
},
{
"tool": "disable_trace",
"tags": [],
"reasons": {}
},
{
"tool": "get_trace",
"tags": [],
"reasons": {}
},
{
"tool": "save_trace",
"tags": [],
"reasons": {}
},
{
"tool": "diff_trace",
"tags": [],
"reasons": {}
},
{
"tool": "hook_syscall",
"tags": [],
"reasons": {}
},
{
"tool": "unhook_syscall",
"tags": [],
"reasons": {}
},
{
"tool": "get_syscall_log",
"tags": [],
"reasons": {}
},
{
"tool": "add_symbol",
"tags": [],
"reasons": {}
},
{
"tool": "remove_symbol",
"tags": [],
"reasons": {}
},
{
"tool": "list_symbols",
"tags": [],
"reasons": {}
},
{
"tool": "load_binary",
"tags": [],
"reasons": {}
},
{
"tool": "load_executable",
"tags": [],
"reasons": {}
},
{
"tool": "export_session",
"tags": [],
"reasons": {}
},
{
"tool": "import_session",
"tags": [],
"reasons": {}
},
{
"tool": "assemble",
"tags": [],
"reasons": {}
},
{
"tool": "disassemble",
"tags": [],
"reasons": {}
},
{
"tool": "unmap_memory",
"tags": [],
"reasons": {}
},
{
"tool": "protect_memory",
"tags": [],
"reasons": {}
},
{
"tool": "enable_coverage",
"tags": [],
"reasons": {}
},
{
"tool": "disable_coverage",
"tags": [],
"reasons": {}
},
{
"tool": "get_coverage",
"tags": [],
"reasons": {}
},
{
"tool": "setup_stack",
"tags": [],
"reasons": {}
},
{
"tool": "assemble_and_load",
"tags": [],
"reasons": {}
},
{
"tool": "diff_context",
"tags": [],
"reasons": {}
},
{
"tool": "fill_memory",
"tags": [],
"reasons": {}
},
{
"tool": "nop_out",
"tags": [],
"reasons": {}
},
{
"tool": "detect_arch",
"tags": [],
"reasons": {}
},
{
"tool": "run_and_diff",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "1fc5eee2bb92f615b12fba6114b705de3b5f7010fe2989c25baaa85f5928c3dc",
"stats": {
"tools": 55,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 0,
"low": 1,
"info": 1
}
}
}