Kywi Software — 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": "@kywi-software/mcp",
"source": {
"kind": "package",
"origin": "@kywi-software/mcp"
},
"server": {
"name": "@kywi-software/mcp"
}
},
"grade": "A",
"score": {
"score": 93,
"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": "high",
"label": "capability blast radius (high) — client exposure if the model is manipulated",
"appliedPenalty": 6
},
{
"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": "high",
"reasons": [
"can send data / act on an external service",
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code"
],
"tags": [
"external-sink",
"sensitive-source",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (70 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-003",
"title": "Read-and-egress in one tool: \"create_webhook\"",
"category": "exfiltration",
"severity": "high",
"confidence": "strong",
"description": "Tool \"create_webhook\" can both read sensitive data and send data to an external destination. Even without an explicit untrusted-input leg, this is a single-call data-exfiltration path if the model is ever manipulated.",
"remediation": "Separate reading from sending; require explicit user confirmation before egress of file/secret contents.",
"location": {
"kind": "flow",
"name": "create_webhook"
},
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"tags": [
"external-sink",
"sensitive-source"
]
}
},
{
"ruleId": "MTC-SRC-002",
"title": "Shell/command execution in server code (dist/developer/tools/config-mutation.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/developer/tools/config-mutation.js:2`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.",
"remediation": "Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.",
"location": {
"kind": "server",
"name": "dist/developer/tools/config-mutation.js"
},
"evidence": "{ execFile } from 'node:child_process'; import { promisify } from 'node:util'; import { z } from 'zod'; import { textRes",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/developer/tools/config-mutation.js",
"line": 2,
"nonRuntime": false
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"url\" on \"create_webhook\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"create_webhook\" 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",
"field": "inputSchema.properties.url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "url"
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "high",
"confidence": "strong",
"untrustedInput": [],
"sensitiveSource": [
"create_webhook"
],
"externalSink": [
"create_webhook"
],
"selfContained": true,
"description": "Tool \"create_webhook\" both reads sensitive data and can send it externally."
}
],
"capabilities": [
{
"tool": "create_api_key",
"tags": [],
"reasons": {}
},
{
"tool": "list_api_keys",
"tags": [],
"reasons": {}
},
{
"tool": "revoke_api_key",
"tags": [],
"reasons": {}
},
{
"tool": "add_content_type",
"tags": [],
"reasons": {}
},
{
"tool": "add_field",
"tags": [],
"reasons": {}
},
{
"tool": "remove_field",
"tags": [],
"reasons": {}
},
{
"tool": "add_theme",
"tags": [],
"reasons": {}
},
{
"tool": "update_content_type",
"tags": [],
"reasons": {}
},
{
"tool": "update_theme_regions",
"tags": [],
"reasons": {}
},
{
"tool": "add_module",
"tags": [],
"reasons": {}
},
{
"tool": "add_plugin",
"tags": [],
"reasons": {}
},
{
"tool": "run_migration",
"tags": [],
"reasons": {}
},
{
"tool": "get_config_summary",
"tags": [],
"reasons": {}
},
{
"tool": "get_content_types",
"tags": [],
"reasons": {}
},
{
"tool": "get_themes",
"tags": [],
"reasons": {}
},
{
"tool": "get_modules",
"tags": [],
"reasons": {}
},
{
"tool": "get_plugins",
"tags": [],
"reasons": {}
},
{
"tool": "preview_schema",
"tags": [],
"reasons": {}
},
{
"tool": "scaffold_site_structure",
"tags": [],
"reasons": {}
},
{
"tool": "scaffold_content_type",
"tags": [],
"reasons": {}
},
{
"tool": "scaffold_theme",
"tags": [],
"reasons": {}
},
{
"tool": "seed_content",
"tags": [],
"reasons": {}
},
{
"tool": "scaffold_component",
"tags": [],
"reasons": {}
},
{
"tool": "list_module_types",
"tags": [],
"reasons": {}
},
{
"tool": "get_building_patterns",
"tags": [],
"reasons": {}
},
{
"tool": "list_components",
"tags": [],
"reasons": {}
},
{
"tool": "get_content",
"tags": [],
"reasons": {}
},
{
"tool": "list_content",
"tags": [],
"reasons": {}
},
{
"tool": "create_content",
"tags": [],
"reasons": {}
},
{
"tool": "update_content",
"tags": [],
"reasons": {}
},
{
"tool": "delete_content",
"tags": [],
"reasons": {}
},
{
"tool": "publish_content",
"tags": [],
"reasons": {}
},
{
"tool": "unpublish_content",
"tags": [],
"reasons": {}
},
{
"tool": "submit_for_review",
"tags": [],
"reasons": {}
},
{
"tool": "approve_content",
"tags": [],
"reasons": {}
},
{
"tool": "reject_content",
"tags": [],
"reasons": {}
},
{
"tool": "restore_version",
"tags": [],
"reasons": {}
},
{
"tool": "move_content",
"tags": [],
"reasons": {}
},
{
"tool": "copy_content",
"tags": [],
"reasons": {}
},
{
"tool": "bulk_create_content",
"tags": [],
"reasons": {}
},
{
"tool": "bulk_publish",
"tags": [],
"reasons": {}
},
{
"tool": "list_pending_content",
"tags": [],
"reasons": {}
},
{
"tool": "get_tree",
"tags": [],
"reasons": {}
},
{
"tool": "list_content_types",
"tags": [],
"reasons": {}
},
{
"tool": "execute_feed",
"tags": [],
"reasons": {}
},
{
"tool": "create_feed",
"tags": [],
"reasons": {}
},
{
"tool": "update_feed",
"tags": [],
"reasons": {}
},
{
"tool": "list_feeds",
"tags": [],
"reasons": {}
},
{
"tool": "get_layout",
"tags": [],
"reasons": {}
},
{
"tool": "update_layout",
"tags": [],
"reasons": {}
},
{
"tool": "remove_module",
"tags": [],
"reasons": {}
},
{
"tool": "update_module_props",
"tags": [],
"reasons": {}
},
{
"tool": "add_row",
"tags": [],
"reasons": {}
},
{
"tool": "remove_row",
"tags": [],
"reasons": {}
},
{
"tool": "personalize_module",
"tags": [],
"reasons": {}
},
{
"tool": "upload_media",
"tags": [],
"reasons": {}
},
{
"tool": "list_media",
"tags": [],
"reasons": {}
},
{
"tool": "delete_media",
"tags": [],
"reasons": {}
},
{
"tool": "list_menus",
"tags": [],
"reasons": {}
},
{
"tool": "get_menu",
"tags": [],
"reasons": {}
},
{
"tool": "upsert_menu",
"tags": [],
"reasons": {}
},
{
"tool": "search_content",
"tags": [],
"reasons": {}
},
{
"tool": "get_nav",
"tags": [],
"reasons": {}
},
{
"tool": "get_breadcrumbs",
"tags": [],
"reasons": {}
},
{
"tool": "list_users",
"tags": [],
"reasons": {}
},
{
"tool": "create_user",
"tags": [],
"reasons": {}
},
{
"tool": "get_site_config",
"tags": [],
"reasons": {}
},
{
"tool": "update_site_config",
"tags": [],
"reasons": {}
},
{
"tool": "create_webhook",
"tags": [
"external-sink",
"sensitive-source"
],
"reasons": {
"external-sink": [
"keyword \"webhook\""
],
"sensitive-source": [
"parameter \"secret\""
]
}
},
{
"tool": "list_webhooks",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "786bd5d1b7f8d3492e3bdbe0c92e0a20937ee12d168724692976c98d375067c2",
"stats": {
"tools": 70,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 2,
"medium": 1,
"low": 0,
"info": 0
}
}
}