Xno Skills — the complete, unedited output of the deterministic mcptrustchecker engine v1.7.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.7.0",
"methodologyVersion": "mcptrustchecker-1.7"
},
"target": {
"id": "xno-skills",
"source": {
"kind": "package",
"origin": "xno-skills"
},
"server": {
"name": "xno-skills"
}
},
"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": "verification-discount",
"level": "source",
"label": "publisher verification (provenance) — cryptographic build provenance ties the artifact to its source",
"appliedPenalty": 0
},
{
"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-1.7"
},
"capability": {
"level": "moderate",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"can send data / act on an external service",
"can create, modify or delete files"
],
"tags": [
"file-write",
"external-sink",
"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-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([rpc_account_balance, rpc_account_info]) co-exist with external-action tools ([wallet_send, payment_create, payment_status, payment_receive, payment_refund]). 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"
},
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"rpc_account_balance",
"rpc_account_info"
],
"sinks": [
"wallet_send",
"payment_create",
"payment_status",
"payment_receive",
"payment_refund"
]
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"address\" on \"rpc_account_balance\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"rpc_account_balance\" takes a URL/host parameter \"address\" 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": "rpc_account_balance",
"field": "inputSchema.properties.address"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "address"
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"address\" on \"rpc_account_info\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"rpc_account_info\" takes a URL/host parameter \"address\" 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": "rpc_account_info",
"field": "inputSchema.properties.address"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "address"
}
},
{
"ruleId": "MTC-CAP-002",
"title": "Tool \"config_set\" can modify the filesystem",
"category": "permissions",
"severity": "medium",
"confidence": "strong",
"description": "Tool \"config_set\" can write, overwrite or delete files (keyword \"overwrite\"). 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": "config_set"
},
"data": {
"tags": [
"file-write"
]
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"config_set\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"config_set\" 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": "config_set"
},
"data": {
"tags": [
"file-write"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"rpc_account_balance",
"rpc_account_info"
],
"sensitiveSource": [],
"externalSink": [
"wallet_send",
"payment_create",
"payment_status",
"payment_receive",
"payment_refund"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "system_diag",
"tags": [],
"reasons": {}
},
{
"tool": "config_get",
"tags": [],
"reasons": {}
},
{
"tool": "config_set",
"tags": [
"file-write"
],
"reasons": {
"file-write": [
"keyword \"overwrite\""
]
}
},
{
"tool": "wallet_list",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_address",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_balance",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_receive",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_send",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"destination\""
]
}
},
{
"tool": "wallet_change_rep",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_submit_block",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_info",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_ows_health",
"tags": [],
"reasons": {}
},
{
"tool": "wallet_history",
"tags": [],
"reasons": {}
},
{
"tool": "payment_create",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"request\""
]
}
},
{
"tool": "payment_list",
"tags": [],
"reasons": {}
},
{
"tool": "payment_status",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"request\""
]
}
},
{
"tool": "payment_receive",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"request\""
]
}
},
{
"tool": "payment_refund",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"request\""
]
}
},
{
"tool": "util_convert",
"tags": [],
"reasons": {}
},
{
"tool": "util_validate",
"tags": [],
"reasons": {}
},
{
"tool": "util_qr",
"tags": [],
"reasons": {}
},
{
"tool": "rpc_probe_caps",
"tags": [],
"reasons": {}
},
{
"tool": "rpc_account_balance",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "rpc_account_info",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "rpc_receivable",
"tags": [],
"reasons": {}
},
{
"tool": "block_send",
"tags": [],
"reasons": {}
},
{
"tool": "block_receive",
"tags": [],
"reasons": {}
},
{
"tool": "block_change",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "aba73c1888dc7a7d817659cec48e0a828e020ffa58348efa3918957ec2420ff3",
"stats": {
"tools": 28,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 4,
"low": 1,
"info": 0
}
}
}