Excalidraw Architect — the complete, unedited output of the deterministic mcptrustchecker engine v1.8.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.8.0",
"methodologyVersion": "mcptrustchecker-1.8"
},
"target": {
"id": "excalidraw-architect-mcp",
"source": {
"kind": "package",
"origin": "excalidraw-architect-mcp"
},
"server": {
"name": "excalidraw-architect-mcp"
}
},
"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-1.8"
},
"capability": {
"level": "high",
"reasons": [
"can create, modify or delete files",
"can execute shell commands or code"
],
"tags": [
"file-write",
"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 (src/excalidraw_mcp/knowledge/diff.py)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`src/excalidraw_mcp/knowledge/diff.py:97`): 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": "src/excalidraw_mcp/knowledge/diff.py"
},
"evidence": "o_relative(p) out = subprocess.run( [\"git\", \"show\", f\"{ref}:{rel}\"], capture_output=True, te",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "src/excalidraw_mcp/knowledge/diff.py",
"line": 97,
"nonRuntime": false
}
},
{
"ruleId": "MTC-CAP-002",
"title": "Tool \"kg_unlink\" can modify the filesystem",
"category": "permissions",
"severity": "medium",
"confidence": "strong",
"description": "Tool \"kg_unlink\" can write, overwrite or delete files (keyword \"unlink\" in tool name). Verify it is scoped to a safe directory.",
"remediation": "Constrain file operations to an explicit, non-sensitive root; reject path traversal.",
"location": {
"kind": "tool",
"name": "kg_unlink"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"kg_unlink\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"kg_unlink\" 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": "kg_unlink"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"excalidraw-architect-mcp\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "excalidraw-architect-mcp"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "kg_init",
"tags": [],
"reasons": {}
},
{
"tool": "kg_add_service",
"tags": [],
"reasons": {}
},
{
"tool": "kg_remove_service",
"tags": [],
"reasons": {}
},
{
"tool": "kg_link",
"tags": [],
"reasons": {}
},
{
"tool": "kg_unlink",
"tags": [
"file-write"
],
"reasons": {
"file-write": [
"keyword \"unlink\" in tool name"
]
}
},
{
"tool": "kg_set_domain",
"tags": [],
"reasons": {}
},
{
"tool": "kg_info",
"tags": [],
"reasons": {}
},
{
"tool": "kg_render",
"tags": [],
"reasons": {}
},
{
"tool": "kg_render_view",
"tags": [],
"reasons": {}
},
{
"tool": "kg_render_around",
"tags": [],
"reasons": {}
},
{
"tool": "kg_render_domain",
"tags": [],
"reasons": {}
},
{
"tool": "kg_import",
"tags": [],
"reasons": {}
},
{
"tool": "whats_connected_to",
"tags": [],
"reasons": {}
},
{
"tool": "kg_path",
"tags": [],
"reasons": {}
},
{
"tool": "kg_lint",
"tags": [],
"reasons": {}
},
{
"tool": "kg_export",
"tags": [],
"reasons": {}
},
{
"tool": "kg_diff",
"tags": [],
"reasons": {}
},
{
"tool": "kg_onboarding_doc",
"tags": [],
"reasons": {}
},
{
"tool": "kg_drift",
"tags": [],
"reasons": {}
},
{
"tool": "create_diagram",
"tags": [],
"reasons": {}
},
{
"tool": "mermaid_to_excalidraw",
"tags": [],
"reasons": {}
},
{
"tool": "modify_diagram",
"tags": [],
"reasons": {}
},
{
"tool": "get_diagram_info",
"tags": [],
"reasons": {}
},
{
"tool": "export_diagram",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "764e4f15e352758256a9f45e41e5228ba55ff9150d6e1b431cb6b3f5e6ca5fbb",
"stats": {
"tools": 24,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 1,
"low": 1,
"info": 1
}
}
}