Mcacp — 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": "mcacp",
"source": {
"kind": "package",
"origin": "mcacp"
},
"server": {
"name": "mcacp"
}
},
"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": [
"can execute shell commands or code"
],
"tags": [
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (24 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/acp/agent-requests.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/acp/agent-requests.js:3`): 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/acp/agent-requests.js"
},
"evidence": "rt { spawn } from 'node:child_process'; export class AgentRequestHandler { terminals = new Map(); nextTerminalId",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/acp/agent-requests.js",
"line": 3,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/acp/transport.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/acp/transport.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/acp/transport.js"
},
"evidence": "rt { spawn } from 'node:child_process'; import { EventEmitter } from 'node:events'; import { createInterface } from 'nod",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/acp/transport.js",
"line": 1,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/registry/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/registry/index.js:3`): 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/registry/index.js"
},
"evidence": "ecFileSync } from 'node:child_process'; const DEFAULT_TTL_MS = 300_000; export class RegistryManager { config; c",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/registry/index.js",
"line": 3,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "list_installed_agents",
"tags": [],
"reasons": {}
},
{
"tool": "registry_search",
"tags": [],
"reasons": {}
},
{
"tool": "agent_install",
"tags": [],
"reasons": {}
},
{
"tool": "agent_uninstall",
"tags": [],
"reasons": {}
},
{
"tool": "agent_check_upgrades",
"tags": [],
"reasons": {}
},
{
"tool": "discover_agents",
"tags": [],
"reasons": {}
},
{
"tool": "reload_config",
"tags": [],
"reasons": {}
},
{
"tool": "initialize",
"tags": [],
"reasons": {}
},
{
"tool": "shutdown",
"tags": [],
"reasons": {}
},
{
"tool": "new_session",
"tags": [],
"reasons": {}
},
{
"tool": "load_session",
"tags": [],
"reasons": {}
},
{
"tool": "list_sessions",
"tags": [],
"reasons": {}
},
{
"tool": "close_session",
"tags": [],
"reasons": {}
},
{
"tool": "prompt_start",
"tags": [],
"reasons": {}
},
{
"tool": "prompt_events",
"tags": [],
"reasons": {}
},
{
"tool": "prompt",
"tags": [],
"reasons": {}
},
{
"tool": "events",
"tags": [],
"reasons": {}
},
{
"tool": "grant_permission",
"tags": [],
"reasons": {}
},
{
"tool": "request_permission",
"tags": [],
"reasons": {}
},
{
"tool": "cancel",
"tags": [],
"reasons": {}
},
{
"tool": "set_mode",
"tags": [],
"reasons": {}
},
{
"tool": "list_running_agents",
"tags": [],
"reasons": {}
},
{
"tool": "get_agent_status",
"tags": [],
"reasons": {}
},
{
"tool": "set_agent_status",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "bb19c66bb0880fc8346b6c9cabc98bbb21bff5ed850f1fd45552c442cc9a337d",
"stats": {
"tools": 24,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 3,
"medium": 0,
"low": 0,
"info": 0
}
}
}