Email — 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": "email-mcp-server",
"source": {
"kind": "package",
"origin": "email-mcp-server"
},
"server": {
"name": "email-mcp-server"
}
},
"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 (28 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-SUP-011",
"title": "Package declares no source repository",
"category": "supply-chain",
"severity": "info",
"confidence": "strong",
"description": "\"email-mcp-server\" 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": "email-mcp-server"
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "email_digest",
"tags": [],
"reasons": {}
},
{
"tool": "email_suggest_reply",
"tags": [],
"reasons": {}
},
{
"tool": "email_triage",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"read_email\""
]
}
},
{
"tool": "email_cleanup",
"tags": [],
"reasons": {}
},
{
"tool": "email_cold_campaign",
"tags": [],
"reasons": {}
},
{
"tool": "email_follow_up",
"tags": [],
"reasons": {}
},
{
"tool": "email_contacts",
"tags": [],
"reasons": {}
},
{
"tool": "email_labels",
"tags": [],
"reasons": {}
},
{
"tool": "email_create_label",
"tags": [],
"reasons": {}
},
{
"tool": "email_archive",
"tags": [],
"reasons": {}
},
{
"tool": "email_trash",
"tags": [],
"reasons": {}
},
{
"tool": "email_delete",
"tags": [],
"reasons": {}
},
{
"tool": "email_mark_read",
"tags": [],
"reasons": {}
},
{
"tool": "email_mark_unread",
"tags": [],
"reasons": {}
},
{
"tool": "email_star",
"tags": [],
"reasons": {}
},
{
"tool": "email_unstar",
"tags": [],
"reasons": {}
},
{
"tool": "email_add_label",
"tags": [],
"reasons": {}
},
{
"tool": "email_remove_label",
"tags": [],
"reasons": {}
},
{
"tool": "email_search",
"tags": [],
"reasons": {}
},
{
"tool": "email_read",
"tags": [],
"reasons": {}
},
{
"tool": "email_read_thread",
"tags": [],
"reasons": {}
},
{
"tool": "email_inbox",
"tags": [],
"reasons": {}
},
{
"tool": "email_profile",
"tags": [],
"reasons": {}
},
{
"tool": "email_send",
"tags": [],
"reasons": {}
},
{
"tool": "email_reply",
"tags": [],
"reasons": {}
},
{
"tool": "email_draft",
"tags": [],
"reasons": {}
},
{
"tool": "email_send_draft",
"tags": [],
"reasons": {}
},
{
"tool": "email_list_drafts",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "5a5e726be2a1e0514e91137326f6d4d2d4045e01b9262fdb1954304ecc98555a",
"stats": {
"tools": 28,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 0,
"low": 0,
"info": 1
}
}
}