Zotero — the complete, unedited output of the deterministic mcptrustchecker engine v1.7.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.7.0",
"methodologyVersion": "mcptrustchecker-1.7"
},
"target": {
"id": "mcp-zotero",
"source": {
"kind": "package",
"origin": "mcp-zotero"
},
"server": {
"name": "mcp-zotero"
}
},
"grade": "A",
"score": {
"score": 90,
"threatScore": 94,
"grade": "A",
"band": "A",
"categorySubtotals": {
"injection": 0,
"exfiltration": 0,
"permissions": 6.3,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-SRC-007",
"category": "permissions",
"severity": "medium",
"confidence": "strong",
"rawWeight": 9,
"confidenceMult": 0.7,
"diminishingFactor": 1,
"appliedPenalty": 6.3
},
{
"kind": "client",
"term": "capability-exposure",
"level": "moderate",
"label": "capability blast radius (moderate) — client exposure if the model is manipulated",
"appliedPenalty": 3
},
{
"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-1.7"
},
"capability": {
"level": "moderate",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)"
],
"tags": [
"untrusted-input"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (46 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-007",
"title": "Unsafe deserialization (src/mcp_zotero/rag/vector_store.py)",
"category": "permissions",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`src/mcp_zotero/rag/vector_store.py:55`): Deserializing untrusted data with these APIs can execute arbitrary code (a well-known RCE gadget class). 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/mcp_zotero/rag/vector_store.py"
},
"evidence": "pickle.load(",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-007",
"file": "src/mcp_zotero/rag/vector_store.py",
"line": 55
}
},
{
"ruleId": "MTC-SUP-012",
"title": "Package has no license",
"category": "hygiene",
"severity": "info",
"confidence": "strong",
"description": "\"mcp-zotero\" has no declared license. This is a legal/reuse concern, not a security finding.",
"location": {
"kind": "package",
"name": "mcp-zotero"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "index_library",
"tags": [],
"reasons": {}
},
{
"tool": "index_items",
"tags": [],
"reasons": {}
},
{
"tool": "remove_from_index",
"tags": [],
"reasons": {}
},
{
"tool": "semantic_search",
"tags": [],
"reasons": {}
},
{
"tool": "get_chunk_context",
"tags": [],
"reasons": {}
},
{
"tool": "find_similar_chunks",
"tags": [],
"reasons": {}
},
{
"tool": "index_status",
"tags": [],
"reasons": {}
},
{
"tool": "list_indexed_items",
"tags": [],
"reasons": {}
},
{
"tool": "ping",
"tags": [],
"reasons": {}
},
{
"tool": "health_check",
"tags": [],
"reasons": {}
},
{
"tool": "search_items",
"tags": [],
"reasons": {}
},
{
"tool": "get_item",
"tags": [],
"reasons": {}
},
{
"tool": "top_items",
"tags": [],
"reasons": {}
},
{
"tool": "trash_items",
"tags": [],
"reasons": {}
},
{
"tool": "deleted_items",
"tags": [],
"reasons": {}
},
{
"tool": "list_searches",
"tags": [],
"reasons": {}
},
{
"tool": "list_groups",
"tags": [],
"reasons": {}
},
{
"tool": "list_collections",
"tags": [],
"reasons": {}
},
{
"tool": "list_collections_top",
"tags": [],
"reasons": {}
},
{
"tool": "list_collections_sub",
"tags": [],
"reasons": {}
},
{
"tool": "get_collection",
"tags": [],
"reasons": {}
},
{
"tool": "collection_items",
"tags": [],
"reasons": {}
},
{
"tool": "collection_items_top",
"tags": [],
"reasons": {}
},
{
"tool": "collection_tags",
"tags": [],
"reasons": {}
},
{
"tool": "list_tags",
"tags": [],
"reasons": {}
},
{
"tool": "item_tags",
"tags": [],
"reasons": {}
},
{
"tool": "item_types",
"tags": [],
"reasons": {}
},
{
"tool": "item_fields",
"tags": [],
"reasons": {}
},
{
"tool": "item_type_fields",
"tags": [],
"reasons": {}
},
{
"tool": "creator_fields",
"tags": [],
"reasons": {}
},
{
"tool": "item_creator_types",
"tags": [],
"reasons": {}
},
{
"tool": "item_attachment_link_modes",
"tags": [],
"reasons": {}
},
{
"tool": "download_attachments",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "add_item",
"tags": [],
"reasons": {}
},
{
"tool": "update_item",
"tags": [],
"reasons": {}
},
{
"tool": "create_collections",
"tags": [],
"reasons": {}
},
{
"tool": "update_collection",
"tags": [],
"reasons": {}
},
{
"tool": "delete_collection",
"tags": [],
"reasons": {}
},
{
"tool": "add_item_to_collection",
"tags": [],
"reasons": {}
},
{
"tool": "remove_item_from_collection",
"tags": [],
"reasons": {}
},
{
"tool": "delete_item",
"tags": [],
"reasons": {}
},
{
"tool": "create_saved_search",
"tags": [],
"reasons": {}
},
{
"tool": "delete_saved_search",
"tags": [],
"reasons": {}
},
{
"tool": "delete_tags",
"tags": [],
"reasons": {}
},
{
"tool": "attach_file",
"tags": [],
"reasons": {}
},
{
"tool": "attach_linked_file",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "4bbc0cc3dd6ddcd8d53846bafba1d47c3093f887a8d47fecbbd95b1c1a54282b",
"stats": {
"tools": 46,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 1,
"low": 0,
"info": 1
}
}
}