FlowCastle — 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": "https://api.flowcastle.ai/api/mcp",
"source": {
"kind": "http",
"origin": "https://api.flowcastle.ai/api/mcp"
},
"server": {
"name": "telegram-flow-builder-mcp",
"version": "0.1.0"
}
},
"grade": "A",
"score": {
"score": 97,
"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": "coverage-honesty",
"level": "live",
"label": "inspection depth (live) — 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": "live",
"inputs": {
"toolSurface": true,
"implementationSource": false,
"packageMetadata": false,
"liveTransport": true
},
"caveats": []
},
"findings": [
{
"ruleId": "MTC-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([import_website_knowledge, read_messages]) co-exist with external-action tools ([sync_dialog_contacts, send_message, send_flow_to_contacts]). 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": "import_website_knowledge → sync_dialog_contacts"
},
"evidence": "untrusted [import_website_knowledge, read_messages] → sinks [sync_dialog_contacts, send_message, send_flow_to_contacts]",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"import_website_knowledge",
"read_messages"
],
"sinks": [
"sync_dialog_contacts",
"send_message",
"send_flow_to_contacts"
]
}
},
{
"ruleId": "MTC-NET-005",
"title": "Remote HTTP MCP endpoint",
"category": "network",
"severity": "info",
"confidence": "strong",
"description": "Remote endpoint api.flowcastle.ai. MCP Trust Checker does not test server-side authentication/authorization; verify the endpoint requires auth.",
"location": {
"kind": "transport"
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"import_website_knowledge",
"read_messages"
],
"sensitiveSource": [],
"externalSink": [
"sync_dialog_contacts",
"send_message",
"send_flow_to_contacts"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "list_applications",
"tags": [],
"reasons": {}
},
{
"tool": "create_application",
"tags": [],
"reasons": {}
},
{
"tool": "update_application",
"tags": [],
"reasons": {}
},
{
"tool": "import_website_knowledge",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"crawl\""
]
}
},
{
"tool": "get_website_import",
"tags": [],
"reasons": {}
},
{
"tool": "list_watched_groups",
"tags": [],
"reasons": {}
},
{
"tool": "list_telegram_operations",
"tags": [],
"reasons": {}
},
{
"tool": "execute_telegram_operation",
"tags": [],
"reasons": {}
},
{
"tool": "get_telegram_operation",
"tags": [],
"reasons": {}
},
{
"tool": "set_watched_groups",
"tags": [],
"reasons": {}
},
{
"tool": "sync_dialog_contacts",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"send_message\""
]
}
},
{
"tool": "get_workspace_summary",
"tags": [],
"reasons": {}
},
{
"tool": "get_variable_context",
"tags": [],
"reasons": {}
},
{
"tool": "get_application_context",
"tags": [],
"reasons": {}
},
{
"tool": "get_module_catalog",
"tags": [],
"reasons": {}
},
{
"tool": "get_module_details",
"tags": [],
"reasons": {}
},
{
"tool": "install_module",
"tags": [],
"reasons": {}
},
{
"tool": "search_flows",
"tags": [],
"reasons": {}
},
{
"tool": "get_flow_context",
"tags": [],
"reasons": {}
},
{
"tool": "get_block_details",
"tags": [],
"reasons": {}
},
{
"tool": "get_action_schema",
"tags": [],
"reasons": {}
},
{
"tool": "get_design_guidelines",
"tags": [],
"reasons": {}
},
{
"tool": "get_funnel_analytics",
"tags": [],
"reasons": {}
},
{
"tool": "search_flow_examples",
"tags": [],
"reasons": {}
},
{
"tool": "get_flow_example",
"tags": [],
"reasons": {}
},
{
"tool": "validate_actions",
"tags": [],
"reasons": {}
},
{
"tool": "apply_actions",
"tags": [],
"reasons": {}
},
{
"tool": "deploy_application",
"tags": [],
"reasons": {}
},
{
"tool": "run_flow_autotest",
"tags": [],
"reasons": {}
},
{
"tool": "send_message",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"send_message\""
]
}
},
{
"tool": "send_flow_to_contacts",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"send_message\""
]
}
},
{
"tool": "read_messages",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"read_message\""
]
}
},
{
"tool": "list_contacts",
"tags": [],
"reasons": {}
},
{
"tool": "get_contact",
"tags": [],
"reasons": {}
},
{
"tool": "get_contact_activity",
"tags": [],
"reasons": {}
},
{
"tool": "list_event_contacts",
"tags": [],
"reasons": {}
},
{
"tool": "create_contact",
"tags": [],
"reasons": {}
},
{
"tool": "update_contact",
"tags": [],
"reasons": {}
},
{
"tool": "list_broadcasts",
"tags": [],
"reasons": {}
},
{
"tool": "get_broadcast_details",
"tags": [],
"reasons": {}
},
{
"tool": "get_broadcast_analytics",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "addd0345948ec4eb93153b3ac3252bfcb6c6099ae3c059430a64e6cec3d61778",
"stats": {
"tools": 41,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 1,
"low": 0,
"info": 1
}
}
}