Paybridge Np — 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": "@paybridge-np/mcp",
"source": {
"kind": "package",
"origin": "@paybridge-np/mcp"
},
"server": {
"name": "@paybridge-np/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 (85 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 ([get_payment, search_docs, get_refund, get_plan, get_customer, get_subscription, get_invoice, get_coupon, get_promotion_code, get_tax_settings, get_checkout_session, get_payment_link]) co-exist with external-action tools ([create_webhook_endpoint, update_webhook_endpoint, delete_webhook_endpoint, create_payment_link]). 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": "get_payment → create_webhook_endpoint"
},
"evidence": "untrusted [get_payment, search_docs, get_refund, get_plan, get_customer, get_subscription, get_invoice, get_coupon, get_promotion_code, get_tax_settings, get_ch",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"get_payment",
"search_docs",
"get_refund",
"get_plan",
"get_customer",
"get_subscription",
"get_invoice",
"get_coupon",
"get_promotion_code",
"get_tax_settings",
"get_checkout_session",
"get_payment_link"
],
"sinks": [
"create_webhook_endpoint",
"update_webhook_endpoint",
"delete_webhook_endpoint",
"create_payment_link"
]
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"url\" on \"create_webhook_endpoint\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"create_webhook_endpoint\" takes a URL/host parameter \"url\" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).",
"remediation": "Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.",
"location": {
"kind": "tool",
"name": "create_webhook_endpoint",
"field": "inputSchema.properties.url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "url"
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"url\" on \"update_webhook_endpoint\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"update_webhook_endpoint\" takes a URL/host parameter \"url\" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).",
"remediation": "Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.",
"location": {
"kind": "tool",
"name": "update_webhook_endpoint",
"field": "inputSchema.properties.url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "url"
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"redirect_url\" on \"create_payment_link\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"create_payment_link\" takes a URL/host parameter \"redirect_url\" with no allowlist/pattern. An outbound-request tool with an unbounded destination enables SSRF and cloud-metadata access (e.g. 169.254.169.254).",
"remediation": "Allowlist destinations or constrain the parameter; block private/link-local addresses server-side.",
"location": {
"kind": "tool",
"name": "create_payment_link",
"field": "inputSchema.properties.redirect_url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "redirect_url"
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"get_payment",
"search_docs",
"get_refund",
"get_plan",
"get_customer",
"get_subscription",
"get_invoice",
"get_coupon",
"get_promotion_code",
"get_tax_settings",
"get_checkout_session",
"get_payment_link"
],
"sensitiveSource": [],
"externalSink": [
"create_webhook_endpoint",
"update_webhook_endpoint",
"delete_webhook_endpoint",
"create_payment_link"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "list_payments",
"tags": [],
"reasons": {}
},
{
"tool": "get_payment",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "create_checkout_session",
"tags": [],
"reasons": {}
},
{
"tool": "search_docs",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"web_search\""
]
}
},
{
"tool": "list_refunds",
"tags": [],
"reasons": {}
},
{
"tool": "get_refund",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "create_refund",
"tags": [],
"reasons": {}
},
{
"tool": "list_webhook_endpoints",
"tags": [],
"reasons": {}
},
{
"tool": "create_webhook_endpoint",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
]
}
},
{
"tool": "update_webhook_endpoint",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
]
}
},
{
"tool": "delete_webhook_endpoint",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
]
}
},
{
"tool": "list_webhook_deliveries",
"tags": [],
"reasons": {}
},
{
"tool": "list_plans",
"tags": [],
"reasons": {}
},
{
"tool": "get_plan",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "list_customers",
"tags": [],
"reasons": {}
},
{
"tool": "get_customer",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "list_subscriptions",
"tags": [],
"reasons": {}
},
{
"tool": "get_subscription",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "list_invoices",
"tags": [],
"reasons": {}
},
{
"tool": "get_invoice",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "create_plan",
"tags": [],
"reasons": {}
},
{
"tool": "update_plan",
"tags": [],
"reasons": {}
},
{
"tool": "create_customer",
"tags": [],
"reasons": {}
},
{
"tool": "update_customer",
"tags": [],
"reasons": {}
},
{
"tool": "add_customer_credit",
"tags": [],
"reasons": {}
},
{
"tool": "create_subscription",
"tags": [],
"reasons": {}
},
{
"tool": "pause_subscription",
"tags": [],
"reasons": {}
},
{
"tool": "resume_subscription",
"tags": [],
"reasons": {}
},
{
"tool": "cancel_subscription",
"tags": [],
"reasons": {}
},
{
"tool": "end_subscription_trial",
"tags": [],
"reasons": {}
},
{
"tool": "extend_subscription_trial",
"tags": [],
"reasons": {}
},
{
"tool": "change_subscription_plan",
"tags": [],
"reasons": {}
},
{
"tool": "preview_subscription_proration",
"tags": [],
"reasons": {}
},
{
"tool": "list_coupons",
"tags": [],
"reasons": {}
},
{
"tool": "get_coupon",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "create_coupon",
"tags": [],
"reasons": {}
},
{
"tool": "deactivate_coupon",
"tags": [],
"reasons": {}
},
{
"tool": "list_promotion_codes",
"tags": [],
"reasons": {}
},
{
"tool": "get_promotion_code",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "create_promotion_code",
"tags": [],
"reasons": {}
},
{
"tool": "deactivate_promotion_code",
"tags": [],
"reasons": {}
},
{
"tool": "validate_promotion_code",
"tags": [],
"reasons": {}
},
{
"tool": "apply_coupon_to_subscription",
"tags": [],
"reasons": {}
},
{
"tool": "remove_subscription_discount",
"tags": [],
"reasons": {}
},
{
"tool": "get_tax_settings",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "update_tax_settings",
"tags": [],
"reasons": {}
},
{
"tool": "list_dunning_policies",
"tags": [],
"reasons": {}
},
{
"tool": "create_dunning_policy",
"tags": [],
"reasons": {}
},
{
"tool": "get_dunning_invoice_status",
"tags": [],
"reasons": {}
},
{
"tool": "stop_invoice_dunning",
"tags": [],
"reasons": {}
},
{
"tool": "retry_invoice_dunning_now",
"tags": [],
"reasons": {}
},
{
"tool": "report_subscription_usage",
"tags": [],
"reasons": {}
},
{
"tool": "get_subscription_usage_summary",
"tags": [],
"reasons": {}
},
{
"tool": "create_invoice_item",
"tags": [],
"reasons": {}
},
{
"tool": "list_invoice_items",
"tags": [],
"reasons": {}
},
{
"tool": "delete_invoice_item",
"tags": [],
"reasons": {}
},
{
"tool": "update_subscription_quantity",
"tags": [],
"reasons": {}
},
{
"tool": "list_usage_records",
"tags": [],
"reasons": {}
},
{
"tool": "update_dunning_policy",
"tags": [],
"reasons": {}
},
{
"tool": "set_subscription_dunning_policy",
"tags": [],
"reasons": {}
},
{
"tool": "list_checkout_sessions",
"tags": [],
"reasons": {}
},
{
"tool": "get_checkout_session",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "list_payment_links",
"tags": [],
"reasons": {}
},
{
"tool": "get_payment_link",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "create_payment_link",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"sms\""
]
}
},
{
"tool": "update_payment_link",
"tags": [],
"reasons": {}
},
{
"tool": "cancel_payment_link",
"tags": [],
"reasons": {}
},
{
"tool": "delete_payment_link",
"tags": [],
"reasons": {}
},
{
"tool": "get_analytics_overview",
"tags": [],
"reasons": {}
},
{
"tool": "get_account",
"tags": [],
"reasons": {}
},
{
"tool": "monthly_reconciliation",
"tags": [],
"reasons": {}
},
{
"tool": "month",
"tags": [],
"reasons": {}
},
{
"tool": "investigate_failed_payment",
"tags": [],
"reasons": {}
},
{
"tool": "payment_id",
"tags": [],
"reasons": {}
},
{
"tool": "customer_email",
"tags": [],
"reasons": {}
},
{
"tool": "onboard_customer",
"tags": [],
"reasons": {}
},
{
"tool": "email",
"tags": [],
"reasons": {}
},
{
"tool": "name",
"tags": [],
"reasons": {}
},
{
"tool": "plan_id",
"tags": [],
"reasons": {}
},
{
"tool": "coupon_code",
"tags": [],
"reasons": {}
},
{
"tool": "review_dunning",
"tags": [],
"reasons": {}
},
{
"tool": "apply_discount",
"tags": [],
"reasons": {}
},
{
"tool": "subscription_id",
"tags": [],
"reasons": {}
},
{
"tool": "promotion_code",
"tags": [],
"reasons": {}
},
{
"tool": "daily_summary",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "f662eeb77bdd14332ff1b62b438ca584a6688159255ae7f84b3777f5a2350b15",
"stats": {
"tools": 85,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 4,
"low": 0,
"info": 0
}
}
}