Bycrawl — 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": "@bycrawl/mcp",
"source": {
"kind": "package",
"origin": "@bycrawl/mcp"
},
"server": {
"name": "@bycrawl/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 (99 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 ([facebook_get_page, facebook_get_page_posts, facebook_marketplace_browse, google_search, web_fetch, web_search]) co-exist with external-action tools ([x_get_post_comments]). 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": "facebook_get_page → x_get_post_comments"
},
"evidence": "untrusted [facebook_get_page, facebook_get_page_posts, facebook_marketplace_browse, google_search, web_fetch, web_search] → sinks [x_get_post_comments]",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"facebook_get_page",
"facebook_get_page_posts",
"facebook_marketplace_browse",
"google_search",
"web_fetch",
"web_search"
],
"sinks": [
"x_get_post_comments"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"facebook_get_page",
"facebook_get_page_posts",
"facebook_marketplace_browse",
"google_search",
"web_fetch",
"web_search"
],
"sensitiveSource": [],
"externalSink": [
"x_get_post_comments"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "dcard_get_forum",
"tags": [],
"reasons": {}
},
{
"tool": "dcard_get_forum_posts",
"tags": [],
"reasons": {}
},
{
"tool": "dcard_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "dcard_get_persona",
"tags": [],
"reasons": {}
},
{
"tool": "facebook_get_page",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"get_page\""
]
}
},
{
"tool": "facebook_get_page_posts",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"get_page\""
]
}
},
{
"tool": "facebook_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "facebook_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "facebook_get_post_comments",
"tags": [],
"reasons": {}
},
{
"tool": "facebook_marketplace_browse",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"browse\""
]
}
},
{
"tool": "facebook_marketplace_search",
"tags": [],
"reasons": {}
},
{
"tool": "facebook_marketplace_item",
"tags": [],
"reasons": {}
},
{
"tool": "gmaps_search_places",
"tags": [],
"reasons": {}
},
{
"tool": "gmaps_get_place",
"tags": [],
"reasons": {}
},
{
"tool": "gmaps_get_place_reviews",
"tags": [],
"reasons": {}
},
{
"tool": "google_search",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"web_search\""
]
}
},
{
"tool": "google_news",
"tags": [],
"reasons": {}
},
{
"tool": "google_trends",
"tags": [],
"reasons": {}
},
{
"tool": "google_finance",
"tags": [],
"reasons": {}
},
{
"tool": "google_shopping",
"tags": [],
"reasons": {}
},
{
"tool": "hackernews_get_item",
"tags": [],
"reasons": {}
},
{
"tool": "hackernews_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "hackernews_get_stories",
"tags": [],
"reasons": {}
},
{
"tool": "hackernews_get_item_comments",
"tags": [],
"reasons": {}
},
{
"tool": "instagram_search_tags",
"tags": [],
"reasons": {}
},
{
"tool": "instagram_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "instagram_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "instagram_get_post_comments",
"tags": [],
"reasons": {}
},
{
"tool": "instagram_get_user_posts",
"tags": [],
"reasons": {}
},
{
"tool": "job104_search_jobs",
"tags": [],
"reasons": {}
},
{
"tool": "job104_get_company",
"tags": [],
"reasons": {}
},
{
"tool": "job104_get_job",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_company",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_company_jobs",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_company_posts",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_search_companies",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_search_jobs",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_job",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_search_users",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_company_employees",
"tags": [],
"reasons": {}
},
{
"tool": "linkedin_get_user_posts",
"tags": [],
"reasons": {}
},
{
"tool": "luma_get_event",
"tags": [],
"reasons": {}
},
{
"tool": "luma_get_place_events",
"tags": [],
"reasons": {}
},
{
"tool": "luma_search_events",
"tags": [],
"reasons": {}
},
{
"tool": "luma_get_categories",
"tags": [],
"reasons": {}
},
{
"tool": "luma_get_calendar_events",
"tags": [],
"reasons": {}
},
{
"tool": "luma_get_place",
"tags": [],
"reasons": {}
},
{
"tool": "producthunt_get_posts",
"tags": [],
"reasons": {}
},
{
"tool": "producthunt_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "producthunt_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "producthunt_get_reviews",
"tags": [],
"reasons": {}
},
{
"tool": "ptt_get_board",
"tags": [],
"reasons": {}
},
{
"tool": "ptt_get_board_posts",
"tags": [],
"reasons": {}
},
{
"tool": "ptt_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "ptt_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_get_subreddit",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_get_subreddit_posts",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "reddit_get_user_posts",
"tags": [],
"reasons": {}
},
{
"tool": "rent591_get_listings",
"tags": [],
"reasons": {}
},
{
"tool": "rent591_get_listing",
"tags": [],
"reasons": {}
},
{
"tool": "bycrawl_health",
"tags": [],
"reasons": {}
},
{
"tool": "bycrawl_get_account",
"tags": [],
"reasons": {}
},
{
"tool": "threads_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_post_replies",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_posts_batch",
"tags": [],
"reasons": {}
},
{
"tool": "threads_search_users",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_user_posts",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_user_replies",
"tags": [],
"reasons": {}
},
{
"tool": "threads_get_public_feed",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_get_video",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_get_user_videos",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_get_video_comments",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_search_videos",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_get_video_subtitles",
"tags": [],
"reasons": {}
},
{
"tool": "trustpilot_get_business",
"tags": [],
"reasons": {}
},
{
"tool": "trustpilot_get_business_reviews",
"tags": [],
"reasons": {}
},
{
"tool": "trustpilot_search_businesses",
"tags": [],
"reasons": {}
},
{
"tool": "trustpilot_search_categories",
"tags": [],
"reasons": {}
},
{
"tool": "trustpilot_get_suggestions",
"tags": [],
"reasons": {}
},
{
"tool": "web_fetch",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "web_search",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"web_search\""
]
}
},
{
"tool": "x_get_user",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_user_posts",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_post",
"tags": [],
"reasons": {}
},
{
"tool": "x_search_posts",
"tags": [],
"reasons": {}
},
{
"tool": "x_get_post_comments",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"tweet\""
]
}
},
{
"tool": "youtube_get_video",
"tags": [],
"reasons": {}
},
{
"tool": "youtube_get_channel",
"tags": [],
"reasons": {}
},
{
"tool": "youtube_search_videos",
"tags": [],
"reasons": {}
},
{
"tool": "youtube_get_video_comments",
"tags": [],
"reasons": {}
},
{
"tool": "youtube_get_video_transcription",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "b48496de86567e320a5a739758af734a8c1c25d6992daca5ad67ccdb74efbcb8",
"stats": {
"tools": 99,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 0,
"medium": 1,
"low": 0,
"info": 0
}
}
}