Apple Books — 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": "apple-books-mcp",
"source": {
"kind": "package",
"origin": "apple-books-mcp"
},
"server": {
"name": "apple-books-mcp"
}
},
"grade": "A",
"score": {
"score": 95,
"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": "moderate",
"label": "capability blast radius (moderate) — client exposure if the model is manipulated",
"appliedPenalty": 3
},
{
"kind": "client",
"term": "verification-discount",
"level": "none",
"label": "publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read",
"appliedPenalty": 2
},
{
"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": "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 (30 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-005",
"title": "Dynamic module load from a non-literal (apple_books_mcp/server.py)",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "In the server's implementation (`apple_books_mcp/server.py:5`): Loading a module chosen at runtime (from a variable) can pull in and run attacker-influenced code paths. 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": "apple_books_mcp/server.py"
},
"evidence": "datetime from mcp.types import ( TextContent ) from mcp.server.fastmcp import FastMCP from py_apple_books import PyA",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-005",
"file": "apple_books_mcp/server.py",
"line": 5,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"apple-books-mcp\" declares no repository URL, so its published artifact cannot be compared against reviewable source.",
"remediation": "Prefer packages that link to public, reviewable source.",
"location": {
"kind": "package",
"name": "apple-books-mcp"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "list_all_collections",
"tags": [],
"reasons": {}
},
{
"tool": "get_collection_books",
"tags": [],
"reasons": {}
},
{
"tool": "describe_collection",
"tags": [],
"reasons": {}
},
{
"tool": "search_collections_by_title",
"tags": [],
"reasons": {}
},
{
"tool": "create_collection",
"tags": [],
"reasons": {}
},
{
"tool": "rename_collection",
"tags": [],
"reasons": {}
},
{
"tool": "delete_collection",
"tags": [],
"reasons": {}
},
{
"tool": "add_book_to_collection",
"tags": [],
"reasons": {}
},
{
"tool": "remove_book_from_collection",
"tags": [],
"reasons": {}
},
{
"tool": "list_all_books",
"tags": [],
"reasons": {}
},
{
"tool": "describe_book",
"tags": [],
"reasons": {}
},
{
"tool": "search_books_by_title",
"tags": [],
"reasons": {}
},
{
"tool": "get_books_by_genre",
"tags": [],
"reasons": {}
},
{
"tool": "get_books_in_progress",
"tags": [],
"reasons": {}
},
{
"tool": "get_finished_books",
"tags": [],
"reasons": {}
},
{
"tool": "get_unstarted_books",
"tags": [],
"reasons": {}
},
{
"tool": "get_recently_read_books",
"tags": [],
"reasons": {}
},
{
"tool": "list_all_annotations",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"browse\""
]
}
},
{
"tool": "list_annotations",
"tags": [],
"reasons": {}
},
{
"tool": "get_highlights_by_color",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"browse\""
]
}
},
{
"tool": "search_notes",
"tags": [],
"reasons": {}
},
{
"tool": "search_annotations",
"tags": [],
"reasons": {}
},
{
"tool": "recent_annotations",
"tags": [],
"reasons": {}
},
{
"tool": "describe_annotation",
"tags": [],
"reasons": {}
},
{
"tool": "get_annotation_context",
"tags": [],
"reasons": {}
},
{
"tool": "get_annotations_by_date_range",
"tags": [],
"reasons": {}
},
{
"tool": "list_book_chapters",
"tags": [],
"reasons": {}
},
{
"tool": "get_chapter_content",
"tags": [],
"reasons": {}
},
{
"tool": "get_current_reading_position",
"tags": [],
"reasons": {}
},
{
"tool": "get_library_stats",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "104dc8b6dba1c1d638031721157ace84dd6272dd1052cebbc8a69b229e29c287",
"stats": {
"tools": 30,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 1,
"low": 0,
"info": 1
}
}
}