Google Workspace — 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": "google-workspace-mcp",
"source": {
"kind": "package",
"origin": "google-workspace-mcp"
},
"server": {
"name": "google-workspace-mcp"
}
},
"grade": "A",
"score": {
"score": 92,
"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": "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": "high",
"reasons": [
"can send data / act on an external service",
"can create, modify or delete files",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)"
],
"tags": [
"sensitive-source",
"file-write",
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (40 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-004",
"title": "Sensitive-source and external-sink co-exist",
"category": "exfiltration",
"severity": "high",
"confidence": "strong",
"description": "Tools that read sensitive data ([drive_read_file_content]) and tools that can send data out ([gmail_send_email]) are exposed together. An agent can move private data to the sink.",
"remediation": "Keep secret-reading and egress capabilities on separate, separately-approved servers.",
"location": {
"kind": "flow",
"name": "drive_read_file_content → gmail_send_email"
},
"evidence": "sources [drive_read_file_content] → sinks [gmail_send_email]",
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"sources": [
"drive_read_file_content"
],
"sinks": [
"gmail_send_email"
]
}
},
{
"ruleId": "MTC-CAP-002",
"title": "Tool \"drive_delete_file\" can modify the filesystem",
"category": "permissions",
"severity": "medium",
"confidence": "strong",
"description": "Tool \"drive_delete_file\" can write, overwrite or delete files (keyword \"delete_file\" 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": "drive_delete_file"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"drive_delete_file\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"drive_delete_file\" 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": "drive_delete_file"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"google-workspace-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": "google-workspace-mcp"
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "high",
"confidence": "strong",
"untrustedInput": [],
"sensitiveSource": [
"drive_read_file_content"
],
"externalSink": [
"gmail_send_email"
],
"selfContained": false,
"path": [
"drive_read_file_content",
"gmail_send_email"
],
"pathWired": false,
"description": "A sensitive-source → external-sink chain exists: drive_read_file_content → gmail_send_email."
}
],
"capabilities": [
{
"tool": "calendar_get_events",
"tags": [],
"reasons": {}
},
{
"tool": "calendar_get_event_details",
"tags": [],
"reasons": {}
},
{
"tool": "create_calendar_event",
"tags": [],
"reasons": {}
},
{
"tool": "delete_calendar_event",
"tags": [],
"reasons": {}
},
{
"tool": "docs_create_document",
"tags": [],
"reasons": {}
},
{
"tool": "docs_get_content_as_markdown",
"tags": [],
"reasons": {}
},
{
"tool": "docs_append_text",
"tags": [],
"reasons": {}
},
{
"tool": "docs_prepend_text",
"tags": [],
"reasons": {}
},
{
"tool": "docs_insert_text",
"tags": [],
"reasons": {}
},
{
"tool": "docs_batch_update",
"tags": [],
"reasons": {}
},
{
"tool": "docs_insert_image",
"tags": [],
"reasons": {}
},
{
"tool": "drive_search_files",
"tags": [],
"reasons": {}
},
{
"tool": "drive_read_file_content",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"read_file\""
]
}
},
{
"tool": "drive_create_folder",
"tags": [],
"reasons": {}
},
{
"tool": "drive_delete_file",
"tags": [
"file-write"
],
"reasons": {
"file-write": [
"keyword \"delete_file\" in tool name"
]
}
},
{
"tool": "drive_list_shared_drives",
"tags": [],
"reasons": {}
},
{
"tool": "drive_rename_file",
"tags": [],
"reasons": {}
},
{
"tool": "query_gmail_emails",
"tags": [],
"reasons": {}
},
{
"tool": "gmail_get_message_details",
"tags": [],
"reasons": {}
},
{
"tool": "gmail_get_attachment_content",
"tags": [],
"reasons": {}
},
{
"tool": "create_gmail_draft",
"tags": [],
"reasons": {}
},
{
"tool": "delete_gmail_draft",
"tags": [],
"reasons": {}
},
{
"tool": "gmail_send_draft",
"tags": [],
"reasons": {}
},
{
"tool": "gmail_reply_to_email",
"tags": [],
"reasons": {}
},
{
"tool": "gmail_bulk_delete_messages",
"tags": [],
"reasons": {}
},
{
"tool": "gmail_send_email",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"send_email\""
]
}
},
{
"tool": "sheets_create_spreadsheet",
"tags": [],
"reasons": {}
},
{
"tool": "sheets_set_column_width",
"tags": [],
"reasons": {}
},
{
"tool": "get_presentation",
"tags": [],
"reasons": {}
},
{
"tool": "get_slides",
"tags": [],
"reasons": {}
},
{
"tool": "create_presentation",
"tags": [],
"reasons": {}
},
{
"tool": "create_slide",
"tags": [],
"reasons": {}
},
{
"tool": "add_text_to_slide",
"tags": [],
"reasons": {}
},
{
"tool": "add_bulleted_list_to_slide",
"tags": [],
"reasons": {}
},
{
"tool": "add_table_to_slide",
"tags": [],
"reasons": {}
},
{
"tool": "add_slide_notes",
"tags": [],
"reasons": {}
},
{
"tool": "duplicate_slide",
"tags": [],
"reasons": {}
},
{
"tool": "delete_slide",
"tags": [],
"reasons": {}
},
{
"tool": "create_presentation_from_markdown",
"tags": [],
"reasons": {}
},
{
"tool": "add_image_to_slide",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "6850512c05195fe5b8440e8ed87edc7d929b650f1b6253804313dcd4da13f099",
"stats": {
"tools": 40,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 1,
"low": 1,
"info": 1
}
}
}