Agent Bus Connect Cli — 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": "@agent-bus-connect/cli",
"source": {
"kind": "package",
"origin": "@agent-bus-connect/cli"
},
"server": {
"name": "@agent-bus-connect/cli"
}
},
"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 (65 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-CAP-001",
"title": "Tool \"record_test_result\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"record_test_result\" appears to run shell commands or evaluate code (parameter \"command\"). Arbitrary execution driven by model input is one of the most dangerous MCP capabilities; combined with any untrusted input it becomes RCE.",
"remediation": "Sandbox execution, allowlist commands/arguments, and never pass model output to a shell unescaped.",
"location": {
"kind": "tool",
"name": "record_test_result"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"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: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": "dist/cli/index.js"
},
"evidence": "ecFileSync } from \"node:child_process\"; import { existsSync, readFileSync } from \"node:fs\"; import { homedir } from \"nod",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/cli/index.js",
"line": 2,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/cli/ui.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/cli/ui.js:30`): 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/ui.js"
},
"evidence": "void import(\"node:child_process\").then(({ spawn }) => { const child = spawn(\"open\", [url], { stdio: \"i",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/cli/ui.js",
"line": 30,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/util/hooks.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/util/hooks.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/util/hooks.js"
},
"evidence": "spawnSync } from \"node:child_process\"; import { readScopeConfig } from \"./project.js\"; export function runLocalHook(eve",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/util/hooks.js",
"line": 1,
"nonRuntime": false
}
},
{
"ruleId": "MTC-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([get_message, task_result, get_task]) co-exist with external-action tools ([record_test_result]). A prompt injection could cause unwanted external actions, though no direct sensitive-data leak path was found.",
"remediation": "Require confirmation for state-changing/egress actions triggered after processing untrusted content.",
"location": {
"kind": "flow",
"name": "get_message → record_test_result"
},
"evidence": "untrusted [get_message, task_result, get_task] → sinks [record_test_result]",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"get_message",
"task_result",
"get_task"
],
"sinks": [
"record_test_result"
]
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"command\" on \"record_test_result\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"record_test_result\" takes a command-shaped parameter \"command\" with no enum/pattern constraint. Free-form, model- or attacker-controlled arguments reaching a shell is the command-injection precondition.",
"remediation": "Constrain the parameter (enum/pattern), or build the command from a fixed template with escaped args.",
"location": {
"kind": "tool",
"name": "record_test_result",
"field": "inputSchema.properties.command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "command"
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"record_test_result\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"record_test_result\" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.",
"remediation": "Declare accurate annotations, and gate destructive tools on user confirmation regardless.",
"location": {
"kind": "tool",
"name": "record_test_result"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"get_message",
"task_result",
"get_task"
],
"sensitiveSource": [],
"externalSink": [
"record_test_result"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "register",
"tags": [],
"reasons": {}
},
{
"tool": "remove_agent",
"tags": [],
"reasons": {}
},
{
"tool": "delete_team",
"tags": [],
"reasons": {}
},
{
"tool": "send",
"tags": [],
"reasons": {}
},
{
"tool": "inbox",
"tags": [],
"reasons": {}
},
{
"tool": "inbox_status",
"tags": [],
"reasons": {}
},
{
"tool": "inbox_previews",
"tags": [],
"reasons": {}
},
{
"tool": "get_message",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "ack",
"tags": [],
"reasons": {}
},
{
"tool": "ask",
"tags": [],
"reasons": {}
},
{
"tool": "ask_async",
"tags": [],
"reasons": {}
},
{
"tool": "ask_best",
"tags": [],
"reasons": {}
},
{
"tool": "reply",
"tags": [],
"reasons": {}
},
{
"tool": "reply_thread",
"tags": [],
"reasons": {}
},
{
"tool": "message_status",
"tags": [],
"reasons": {}
},
{
"tool": "why_no_reply",
"tags": [],
"reasons": {}
},
{
"tool": "send_team",
"tags": [],
"reasons": {}
},
{
"tool": "ask_team",
"tags": [],
"reasons": {}
},
{
"tool": "subscribe",
"tags": [],
"reasons": {}
},
{
"tool": "unsubscribe",
"tags": [],
"reasons": {}
},
{
"tool": "send_channel",
"tags": [],
"reasons": {}
},
{
"tool": "subscribers",
"tags": [],
"reasons": {}
},
{
"tool": "thread",
"tags": [],
"reasons": {}
},
{
"tool": "whois",
"tags": [],
"reasons": {}
},
{
"tool": "directory",
"tags": [],
"reasons": {}
},
{
"tool": "wait_for_agents",
"tags": [],
"reasons": {}
},
{
"tool": "recent",
"tags": [],
"reasons": {}
},
{
"tool": "create_task",
"tags": [],
"reasons": {}
},
{
"tool": "delegate",
"tags": [],
"reasons": {}
},
{
"tool": "delegate_team",
"tags": [],
"reasons": {}
},
{
"tool": "claim_task",
"tags": [],
"reasons": {}
},
{
"tool": "set_agent_status",
"tags": [],
"reasons": {}
},
{
"tool": "sleep_agent",
"tags": [],
"reasons": {}
},
{
"tool": "wake_agent",
"tags": [],
"reasons": {}
},
{
"tool": "assign_task",
"tags": [],
"reasons": {}
},
{
"tool": "claim_best_task",
"tags": [],
"reasons": {}
},
{
"tool": "update_task",
"tags": [],
"reasons": {}
},
{
"tool": "release_task",
"tags": [],
"reasons": {}
},
{
"tool": "acknowledge_task",
"tags": [],
"reasons": {}
},
{
"tool": "submit_review",
"tags": [],
"reasons": {}
},
{
"tool": "handoff_task",
"tags": [],
"reasons": {}
},
{
"tool": "check_scope_conflicts",
"tags": [],
"reasons": {}
},
{
"tool": "record_test_result",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
},
{
"tool": "list_test_results",
"tags": [],
"reasons": {}
},
{
"tool": "record_task_event",
"tags": [],
"reasons": {}
},
{
"tool": "list_task_events",
"tags": [],
"reasons": {}
},
{
"tool": "task_result",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wait_for_task",
"tags": [],
"reasons": {}
},
{
"tool": "cancel_task",
"tags": [],
"reasons": {}
},
{
"tool": "list_tasks",
"tags": [],
"reasons": {}
},
{
"tool": "activity",
"tags": [],
"reasons": {}
},
{
"tool": "cockpit",
"tags": [],
"reasons": {}
},
{
"tool": "now",
"tags": [],
"reasons": {}
},
{
"tool": "project_board",
"tags": [],
"reasons": {}
},
{
"tool": "team_board",
"tags": [],
"reasons": {}
},
{
"tool": "get_task",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "record_decision",
"tags": [],
"reasons": {}
},
{
"tool": "list_decisions",
"tags": [],
"reasons": {}
},
{
"tool": "remember",
"tags": [],
"reasons": {}
},
{
"tool": "list_memories",
"tags": [],
"reasons": {}
},
{
"tool": "pin_memory",
"tags": [],
"reasons": {}
},
{
"tool": "unpin_memory",
"tags": [],
"reasons": {}
},
{
"tool": "session_brief",
"tags": [],
"reasons": {}
},
{
"tool": "final_report",
"tags": [],
"reasons": {}
},
{
"tool": "review_gate",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "15b5cbdb381a701713a08e1ad69ed7f2706d289c9a051f6f4e5e0a71151a9d57",
"stats": {
"tools": 65,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 4,
"medium": 2,
"low": 1,
"info": 0
}
}
}