Plain — 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": "@tellahq/plain-mcp",
"source": {
"kind": "package",
"origin": "@tellahq/plain-mcp"
},
"server": {
"name": "@tellahq/plain-mcp"
}
},
"grade": "A",
"score": {
"score": 96,
"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": "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-1.13"
},
"capability": {
"level": "moderate",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"can send data / act on an external service"
],
"tags": [
"untrusted-input",
"external-sink"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (78 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-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([change_thread_priority]) co-exist with external-action tools ([create_webhook, update_webhook, delete_webhook, send_email]). A prompt injection could cause unwanted external actions, though no direct sensitive-data leak path was found.",
"remediation": "Require confirmation for state-changing/egress actions triggered after processing untrusted content.",
"location": {
"kind": "flow",
"name": "change_thread_priority → create_webhook"
},
"evidence": "untrusted [change_thread_priority] → sinks [create_webhook, update_webhook, delete_webhook, send_email]",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"change_thread_priority"
],
"sinks": [
"create_webhook",
"update_webhook",
"delete_webhook",
"send_email"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"change_thread_priority"
],
"sensitiveSource": [],
"externalSink": [
"create_webhook",
"update_webhook",
"delete_webhook",
"send_email"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "list_help_centers",
"tags": [],
"reasons": {}
},
{
"tool": "get_help_center",
"tags": [],
"reasons": {}
},
{
"tool": "create_help_center",
"tags": [],
"reasons": {}
},
{
"tool": "update_help_center",
"tags": [],
"reasons": {}
},
{
"tool": "delete_help_center",
"tags": [],
"reasons": {}
},
{
"tool": "update_help_center_custom_domain",
"tags": [],
"reasons": {}
},
{
"tool": "verify_help_center_custom_domain",
"tags": [],
"reasons": {}
},
{
"tool": "list_help_center_articles",
"tags": [],
"reasons": {}
},
{
"tool": "get_help_center_article",
"tags": [],
"reasons": {}
},
{
"tool": "get_help_center_article_by_slug",
"tags": [],
"reasons": {}
},
{
"tool": "upsert_help_center_article",
"tags": [],
"reasons": {}
},
{
"tool": "delete_help_center_article",
"tags": [],
"reasons": {}
},
{
"tool": "generate_help_center_article",
"tags": [],
"reasons": {}
},
{
"tool": "list_help_center_article_groups",
"tags": [],
"reasons": {}
},
{
"tool": "get_help_center_article_group",
"tags": [],
"reasons": {}
},
{
"tool": "create_help_center_article_group",
"tags": [],
"reasons": {}
},
{
"tool": "update_help_center_article_group",
"tags": [],
"reasons": {}
},
{
"tool": "delete_help_center_article_group",
"tags": [],
"reasons": {}
},
{
"tool": "get_help_center_index",
"tags": [],
"reasons": {}
},
{
"tool": "update_help_center_index",
"tags": [],
"reasons": {}
},
{
"tool": "create_knowledge_source",
"tags": [],
"reasons": {}
},
{
"tool": "delete_knowledge_source",
"tags": [],
"reasons": {}
},
{
"tool": "upsert_customer",
"tags": [],
"reasons": {}
},
{
"tool": "delete_customer",
"tags": [],
"reasons": {}
},
{
"tool": "mark_customer_as_spam",
"tags": [],
"reasons": {}
},
{
"tool": "unmark_customer_as_spam",
"tags": [],
"reasons": {}
},
{
"tool": "get_customer",
"tags": [],
"reasons": {}
},
{
"tool": "create_customer_event",
"tags": [],
"reasons": {}
},
{
"tool": "create_thread",
"tags": [],
"reasons": {}
},
{
"tool": "assign_thread",
"tags": [],
"reasons": {}
},
{
"tool": "unassign_thread",
"tags": [],
"reasons": {}
},
{
"tool": "change_thread_priority",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"read_pr\""
]
}
},
{
"tool": "update_thread_title",
"tags": [],
"reasons": {}
},
{
"tool": "delete_thread",
"tags": [],
"reasons": {}
},
{
"tool": "create_thread_event",
"tags": [],
"reasons": {}
},
{
"tool": "list_label_types",
"tags": [],
"reasons": {}
},
{
"tool": "create_label_type",
"tags": [],
"reasons": {}
},
{
"tool": "add_labels_to_thread",
"tags": [],
"reasons": {}
},
{
"tool": "remove_labels_from_thread",
"tags": [],
"reasons": {}
},
{
"tool": "upsert_company",
"tags": [],
"reasons": {}
},
{
"tool": "delete_company",
"tags": [],
"reasons": {}
},
{
"tool": "upsert_tenant",
"tags": [],
"reasons": {}
},
{
"tool": "delete_tenant",
"tags": [],
"reasons": {}
},
{
"tool": "list_snippets",
"tags": [],
"reasons": {}
},
{
"tool": "create_snippet",
"tags": [],
"reasons": {}
},
{
"tool": "update_snippet",
"tags": [],
"reasons": {}
},
{
"tool": "delete_snippet",
"tags": [],
"reasons": {}
},
{
"tool": "list_webhooks",
"tags": [],
"reasons": {}
},
{
"tool": "create_webhook",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
]
}
},
{
"tool": "update_webhook",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
]
}
},
{
"tool": "delete_webhook",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
]
}
},
{
"tool": "list_users",
"tags": [],
"reasons": {}
},
{
"tool": "get_workspace",
"tags": [],
"reasons": {}
},
{
"tool": "send_email",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"send_email\""
]
}
},
{
"tool": "send_chat",
"tags": [],
"reasons": {}
},
{
"tool": "list_autoresponders",
"tags": [],
"reasons": {}
},
{
"tool": "create_autoresponder",
"tags": [],
"reasons": {}
},
{
"tool": "delete_autoresponder",
"tags": [],
"reasons": {}
},
{
"tool": "list_tiers",
"tags": [],
"reasons": {}
},
{
"tool": "create_tier",
"tags": [],
"reasons": {}
},
{
"tool": "delete_tier",
"tags": [],
"reasons": {}
},
{
"tool": "list_customer_groups",
"tags": [],
"reasons": {}
},
{
"tool": "create_customer_group",
"tags": [],
"reasons": {}
},
{
"tool": "add_customer_to_groups",
"tags": [],
"reasons": {}
},
{
"tool": "remove_customer_from_groups",
"tags": [],
"reasons": {}
},
{
"tool": "list_thread_field_schemas",
"tags": [],
"reasons": {}
},
{
"tool": "upsert_thread_field",
"tags": [],
"reasons": {}
},
{
"tool": "delete_note",
"tags": [],
"reasons": {}
},
{
"tool": "list_threads",
"tags": [],
"reasons": {}
},
{
"tool": "get_thread",
"tags": [],
"reasons": {}
},
{
"tool": "search_customers",
"tags": [],
"reasons": {}
},
{
"tool": "get_queue_stats",
"tags": [],
"reasons": {}
},
{
"tool": "reply_to_thread",
"tags": [],
"reasons": {}
},
{
"tool": "mark_thread_done",
"tags": [],
"reasons": {}
},
{
"tool": "mark_thread_todo",
"tags": [],
"reasons": {}
},
{
"tool": "change_thread_status_to_todo",
"tags": [],
"reasons": {}
},
{
"tool": "snooze_thread",
"tags": [],
"reasons": {}
},
{
"tool": "create_note",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "081a108465c2ea549437c488dbe60fd198e9e474e69f8f0e0d46bfe4388133e6",
"stats": {
"tools": 78,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 1,
"low": 0,
"info": 0
}
}
}