Tracepulse — 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": "tracepulse",
"source": {
"kind": "package",
"origin": "tracepulse"
},
"server": {
"name": "tracepulse"
}
},
"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 send data / act on an external service",
"can execute shell commands or code"
],
"tags": [
"code-exec",
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (44 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 \"verify_build\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"verify_build\" 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": "verify_build"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-001",
"title": "Tool \"run_and_watch\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"run_and_watch\" 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": "run_and_watch"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-001",
"title": "Tool \"verify_mcp\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"verify_mcp\" 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": "verify_mcp"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-001",
"title": "Tool \"start_server\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"start_server\" 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": "start_server"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/cli.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/cli.js:2099`): 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.js"
},
"evidence": "import { spawn } from \"child_process\"; import { createInterface } from \"readline\"; import { resolve } from \"path\"; impo",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/cli.js",
"line": 2099,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-003",
"title": "Hardcoded egress to an external endpoint (dist/init-command-V6O4TMLD.js)",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`dist/init-command-V6O4TMLD.js:101`): A hardcoded outbound call to a fixed external host inside server code is a classic exfiltration/telemetry channel — especially paired with reads of local data. 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/init-command-V6O4TMLD.js"
},
"evidence": "{ const res = await fetch(\"https://registry.npmjs.org/tracepulse/latest\", { signal: AbortSignal.timeout(3e3)",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"data": {
"rule": "MTC-SRC-003",
"file": "dist/init-command-V6O4TMLD.js",
"line": 101,
"nonRuntime": false
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"typecheck_command\" on \"verify_build\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"verify_build\" takes a command-shaped parameter \"typecheck_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": "verify_build",
"field": "inputSchema.properties.typecheck_command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "typecheck_command"
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"build_command\" on \"verify_build\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"verify_build\" takes a command-shaped parameter \"build_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": "verify_build",
"field": "inputSchema.properties.build_command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "build_command"
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"command\" on \"run_and_watch\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"run_and_watch\" 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": "run_and_watch",
"field": "inputSchema.properties.command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "command"
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"command\" on \"verify_mcp\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"verify_mcp\" 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": "verify_mcp",
"field": "inputSchema.properties.command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "command"
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"command\" on \"start_server\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"start_server\" 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": "start_server",
"field": "inputSchema.properties.command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "command"
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"verify_build\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"verify_build\" 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": "verify_build"
},
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"run_and_watch\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"run_and_watch\" 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": "run_and_watch"
},
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"verify_mcp\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"verify_mcp\" 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": "verify_mcp"
},
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"start_server\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"start_server\" 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": "start_server"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "get_errors",
"tags": [],
"reasons": {}
},
{
"tool": "get_server_logs",
"tags": [],
"reasons": {}
},
{
"tool": "get_runtime_status",
"tags": [],
"reasons": {}
},
{
"tool": "clear_errors",
"tags": [],
"reasons": {}
},
{
"tool": "acknowledge_error",
"tags": [],
"reasons": {}
},
{
"tool": "watch_for_errors",
"tags": [],
"reasons": {}
},
{
"tool": "get_build_errors",
"tags": [],
"reasons": {}
},
{
"tool": "get_error_clusters",
"tags": [],
"reasons": {}
},
{
"tool": "get_migration_status",
"tags": [],
"reasons": {}
},
{
"tool": "get_audit_trail",
"tags": [],
"reasons": {}
},
{
"tool": "get_session_insights",
"tags": [],
"reasons": {}
},
{
"tool": "check_drift",
"tags": [],
"reasons": {}
},
{
"tool": "get_session_impact",
"tags": [],
"reasons": {}
},
{
"tool": "get_session_summary",
"tags": [],
"reasons": {}
},
{
"tool": "get_perf_baseline",
"tags": [],
"reasons": {}
},
{
"tool": "get_error_context",
"tags": [],
"reasons": {}
},
{
"tool": "get_timeline",
"tags": [],
"reasons": {}
},
{
"tool": "list_services",
"tags": [],
"reasons": {}
},
{
"tool": "get_correlated_errors",
"tags": [],
"reasons": {}
},
{
"tool": "get_new_errors",
"tags": [],
"reasons": {}
},
{
"tool": "get_error_trends",
"tags": [],
"reasons": {}
},
{
"tool": "correlate_with_diff",
"tags": [],
"reasons": {}
},
{
"tool": "get_cross_layer_diagnosis",
"tags": [],
"reasons": {}
},
{
"tool": "get_health_summary",
"tags": [],
"reasons": {}
},
{
"tool": "verify_fix",
"tags": [],
"reasons": {}
},
{
"tool": "verify_loop",
"tags": [],
"reasons": {}
},
{
"tool": "get_prompt_context",
"tags": [],
"reasons": {}
},
{
"tool": "verify_build",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
},
{
"tool": "wait_for_build",
"tags": [],
"reasons": {}
},
{
"tool": "wait_for_event",
"tags": [],
"reasons": {}
},
{
"tool": "run_and_watch",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
},
{
"tool": "get_requests",
"tags": [],
"reasons": {}
},
{
"tool": "restart_server",
"tags": [],
"reasons": {}
},
{
"tool": "get_infra_status",
"tags": [],
"reasons": {}
},
{
"tool": "get_infra_detail",
"tags": [],
"reasons": {}
},
{
"tool": "check_port",
"tags": [],
"reasons": {}
},
{
"tool": "free_port",
"tags": [],
"reasons": {}
},
{
"tool": "get_project_health",
"tags": [],
"reasons": {}
},
{
"tool": "verify_mcp",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
},
{
"tool": "register_probe",
"tags": [],
"reasons": {}
},
{
"tool": "list_probes",
"tags": [],
"reasons": {}
},
{
"tool": "get_bug_patterns",
"tags": [],
"reasons": {}
},
{
"tool": "start_server",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
},
{
"tool": "stop_server",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "6dc49d1c8f5517efa552fe0fc27913d921baed866e61e87eae2a55d320b20523",
"stats": {
"tools": 44,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 5,
"medium": 6,
"low": 4,
"info": 0
}
}
}