Obsidian 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": "@joemugen/obsidian-cli-mcp",
"source": {
"kind": "package",
"origin": "@joemugen/obsidian-cli-mcp"
},
"server": {
"name": "@joemugen/obsidian-cli-mcp"
}
},
"grade": "B",
"score": {
"score": 89,
"threatScore": 100,
"grade": "B",
"band": "B",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "client",
"term": "capability-exposure",
"level": "critical",
"label": "capability blast radius (critical) — client exposure if the model is manipulated",
"appliedPenalty": 10
},
{
"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": "critical",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code",
"untrusted-input, sensitive-source and egress co-exist across tools (toxic-flow surface)",
"untrusted input can reach code execution"
],
"tags": [
"sensitive-source",
"code-exec",
"untrusted-input"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (78 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-FLOW-002",
"title": "Completed toxic-flow trifecta across tools",
"category": "exfiltration",
"severity": "critical",
"confidence": "strong",
"description": "This server (without client built-ins) exposes a complete data-exfiltration chain: obsidian_list_themes → obsidian_list_files → obsidian_eval. Untrusted input is ingested, private data is read, and it can be sent to an external sink via the agent composing the tools (→). Static analysis proves the primitive exists, not that a specific run will occur.",
"remediation": "Remove one leg of the trifecta: isolate untrusted-input tools from secret-reading tools and from egress tools, or require human approval between them.",
"location": {
"kind": "flow",
"name": "obsidian_list_themes → obsidian_list_files → obsidian_eval"
},
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"untrusted": [
"obsidian_list_themes"
],
"sources": [
"obsidian_list_files",
"obsidian_sync_deleted"
],
"sinks": [
"obsidian_execute_command",
"obsidian_eval"
],
"path": [
"obsidian_list_themes",
"obsidian_list_files",
"obsidian_eval"
],
"edges": [
{
"from": "obsidian_list_themes",
"to": "obsidian_list_files",
"kind": "agent-mediated"
},
{
"from": "obsidian_list_files",
"to": "obsidian_eval",
"kind": "agent-mediated"
}
],
"wired": false
}
},
{
"ruleId": "MTC-CAP-001",
"title": "Tool \"obsidian_execute_command\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"obsidian_execute_command\" appears to run shell commands or evaluate code (keyword \"execute command\" in tool name). 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": "obsidian_execute_command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-001",
"title": "Tool \"obsidian_eval\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"obsidian_eval\" appears to run shell commands or evaluate code (keyword \"eval\" in tool name). 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": "obsidian_eval"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:7`): 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/index.js"
},
"evidence": "n, execFileSync } from \"child_process\"; import os from \"os\"; var ObsidianCliService = class { constructor(obsidianBin,",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/index.js",
"line": 7,
"nonRuntime": false
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"code\" on \"obsidian_eval\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"obsidian_eval\" takes a command-shaped parameter \"code\" 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": "obsidian_eval",
"field": "inputSchema.properties.code"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "code"
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"obsidian_execute_command\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"obsidian_execute_command\" 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": "obsidian_execute_command"
},
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"obsidian_eval\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"obsidian_eval\" 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": "obsidian_eval"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "critical",
"confidence": "strong",
"untrustedInput": [
"obsidian_list_themes"
],
"sensitiveSource": [
"obsidian_list_files",
"obsidian_sync_deleted"
],
"externalSink": [
"obsidian_execute_command",
"obsidian_eval"
],
"selfContained": false,
"path": [
"obsidian_list_themes",
"obsidian_list_files",
"obsidian_eval"
],
"pathWired": false,
"description": "A cross-tool exfiltration chain exists: obsidian_list_themes → obsidian_list_files → obsidian_eval."
}
],
"capabilities": [
{
"tool": "obsidian_read_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_create_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_append_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_prepend_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_move_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_delete_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_vault_info",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_files",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"list_files\""
]
}
},
{
"tool": "obsidian_list_folders",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_search",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_search_context",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_properties",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_get_property",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_set_property",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_remove_property",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_tags",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_get_tag",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_links",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_backlinks",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_orphans",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_read_daily",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_append_daily",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_prepend_daily",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_tasks",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_toggle_task",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_templates",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_read_template",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_insert_template",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_bookmarks",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_add_bookmark",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_deadends",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_unresolved",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_outline",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_wordcount",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_rename_note",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_file_info",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_plugins",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_plugins_enabled",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_get_plugin",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_enable_plugin",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_disable_plugin",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_install_plugin",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_uninstall_plugin",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_history_list",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_history_read",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_history_restore",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_sync_status",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_sync_history",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_sync_read",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_sync_restore",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_sync_deleted",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"list_files\""
]
}
},
{
"tool": "obsidian_list_bases",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_query_base",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_base_views",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_create_base_item",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_vaults",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_version",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_recents",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_random_read",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_aliases",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_workspace",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_tabs",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_daily_path",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_commands",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_execute_command",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"keyword \"execute command\" in tool name"
]
}
},
{
"tool": "obsidian_list_hotkeys",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_get_hotkey",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_themes",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"browse\""
]
}
},
{
"tool": "obsidian_get_theme",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_set_theme",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_install_theme",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_uninstall_theme",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_snippets",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_list_snippets_enabled",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_enable_snippet",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_disable_snippet",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_diff",
"tags": [],
"reasons": {}
},
{
"tool": "obsidian_eval",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"keyword \"eval\" in tool name"
]
}
}
],
"surfaceDigest": "2b52a62be0151a32ca069c93125e35d384c7cde596e2ae56dbc31f580a533952",
"stats": {
"tools": 78,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 1,
"high": 3,
"medium": 1,
"low": 2,
"info": 0
}
}
}