Upload Post — 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": "@upload-post/mcp",
"source": {
"kind": "package",
"origin": "@upload-post/mcp"
},
"server": {
"name": "@upload-post/mcp"
}
},
"grade": "A",
"score": {
"score": 90,
"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": "critical",
"label": "capability blast radius (critical) — client exposure if the model is manipulated",
"appliedPenalty": 10
},
{
"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-1.13"
},
"capability": {
"level": "critical",
"reasons": [
"ingests untrusted external content (a prompt-injection entry point)",
"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",
"untrusted-input, sensitive-source and egress co-exist across tools (toxic-flow surface)",
"untrusted input can reach code execution"
],
"tags": [
"external-sink",
"code-exec",
"untrusted-input",
"sensitive-source"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (58 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-002",
"title": "Completed toxic-flow trifecta across tools",
"category": "exfiltration",
"severity": "critical",
"confidence": "strong",
"description": "This server (without client built-ins) exposes a complete data-exfiltration chain: download_ffmpeg_result → open_upload_studio ⇒ create_comment. Untrusted input is ingested, private data is read, and it can be sent to an external sink — and at least one leg is a direct schema wire (⇒), where a producer's output drops straight into a free-text parameter of the next tool, so the chain needs little agent cooperation. Static analysis proves the primitive exists, not that a specific run will occur.",
"remediation": "Remove one leg of the trifecta: isolate untrusted-input tools from secret-reading tools and from egress tools, or require human approval between them.",
"location": {
"kind": "flow",
"name": "download_ffmpeg_result → open_upload_studio → create_comment"
},
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"untrusted": [
"download_ffmpeg_result"
],
"sources": [
"open_upload_studio"
],
"sinks": [
"create_comment",
"send_dm",
"submit_ffmpeg_job"
],
"path": [
"download_ffmpeg_result",
"open_upload_studio",
"create_comment"
],
"edges": [
{
"from": "download_ffmpeg_result",
"to": "open_upload_studio",
"kind": "agent-mediated"
},
{
"from": "open_upload_studio",
"to": "create_comment",
"kind": "schema-wired"
}
],
"wired": true
}
},
{
"ruleId": "MTC-CAP-001",
"title": "Tool \"submit_ffmpeg_job\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"submit_ffmpeg_job\" appears to run shell commands or evaluate code (parameter \"command\"). Arbitrary execution driven by model input is one of the most dangerous MCP capabilities; combined with any untrusted input it becomes RCE.",
"remediation": "Sandbox execution, allowlist commands/arguments, and never pass model output to a shell unescaped.",
"location": {
"kind": "tool",
"name": "submit_ffmpeg_job"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-CAP-007",
"title": "Unconstrained URL/host parameter \"url\" on \"send_dm\"",
"category": "network",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"send_dm\" 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": "send_dm",
"field": "inputSchema.properties.url"
},
"owasp": "LLM06:2025 Excessive Agency",
"data": {
"param": "url"
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"full_command\" on \"submit_ffmpeg_job\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"submit_ffmpeg_job\" takes a command-shaped parameter \"full_command\" with no enum/pattern constraint. Free-form, model- or attacker-controlled arguments reaching a shell is the command-injection precondition.",
"remediation": "Constrain the parameter (enum/pattern), or build the command from a fixed template with escaped args.",
"location": {
"kind": "tool",
"name": "submit_ffmpeg_job",
"field": "inputSchema.properties.full_command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "full_command"
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"submit_ffmpeg_job\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"submit_ffmpeg_job\" 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": "submit_ffmpeg_job"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "critical",
"confidence": "strong",
"untrustedInput": [
"download_ffmpeg_result"
],
"sensitiveSource": [
"open_upload_studio"
],
"externalSink": [
"create_comment",
"send_dm",
"submit_ffmpeg_job"
],
"selfContained": false,
"path": [
"download_ffmpeg_result",
"open_upload_studio",
"create_comment"
],
"pathWired": true,
"description": "A cross-tool exfiltration chain exists: download_ffmpeg_result → open_upload_studio ⇒ create_comment."
}
],
"capabilities": [
{
"tool": "get_analytics",
"tags": [],
"reasons": {}
},
{
"tool": "get_total_impressions",
"tags": [],
"reasons": {}
},
{
"tool": "get_post_analytics",
"tags": [],
"reasons": {}
},
{
"tool": "get_cached_post_analytics",
"tags": [],
"reasons": {}
},
{
"tool": "get_platform_metrics",
"tags": [],
"reasons": {}
},
{
"tool": "get_audience",
"tags": [],
"reasons": {}
},
{
"tool": "get_suggestions",
"tags": [],
"reasons": {}
},
{
"tool": "get_post_comments",
"tags": [],
"reasons": {}
},
{
"tool": "reply_to_comment",
"tags": [],
"reasons": {}
},
{
"tool": "public_reply_to_comment",
"tags": [],
"reasons": {}
},
{
"tool": "create_comment",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"create_comment\""
]
}
},
{
"tool": "delete_comment",
"tags": [],
"reasons": {}
},
{
"tool": "comment_action",
"tags": [],
"reasons": {}
},
{
"tool": "send_dm",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"parameter \"recipient\""
]
}
},
{
"tool": "list_dm_conversations",
"tags": [],
"reasons": {}
},
{
"tool": "manage_autodms",
"tags": [],
"reasons": {}
},
{
"tool": "submit_ffmpeg_job",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
},
{
"tool": "get_ffmpeg_job",
"tags": [],
"reasons": {}
},
{
"tool": "download_ffmpeg_result",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "get_ffmpeg_consumption",
"tags": [],
"reasons": {}
},
{
"tool": "create_media_upload",
"tags": [],
"reasons": {}
},
{
"tool": "complete_media_upload",
"tags": [],
"reasons": {}
},
{
"tool": "get_media_upload",
"tags": [],
"reasons": {}
},
{
"tool": "delete_media_upload",
"tags": [],
"reasons": {}
},
{
"tool": "get_facebook_pages",
"tags": [],
"reasons": {}
},
{
"tool": "get_linkedin_pages",
"tags": [],
"reasons": {}
},
{
"tool": "get_pinterest_boards",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_music_trending",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_music_search",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_location_search",
"tags": [],
"reasons": {}
},
{
"tool": "tiktok_publishing_settings",
"tags": [],
"reasons": {}
},
{
"tool": "get_google_business_locations",
"tags": [],
"reasons": {}
},
{
"tool": "get_google_business_reviews",
"tags": [],
"reasons": {}
},
{
"tool": "reply_to_google_business_review",
"tags": [],
"reasons": {}
},
{
"tool": "get_reddit_detailed_posts",
"tags": [],
"reasons": {}
},
{
"tool": "retry_post",
"tags": [],
"reasons": {}
},
{
"tool": "unpublish_post",
"tags": [],
"reasons": {}
},
{
"tool": "get_queue_settings",
"tags": [],
"reasons": {}
},
{
"tool": "update_queue_settings",
"tags": [],
"reasons": {}
},
{
"tool": "preview_queue",
"tags": [],
"reasons": {}
},
{
"tool": "list_scheduled",
"tags": [],
"reasons": {}
},
{
"tool": "cancel_scheduled",
"tags": [],
"reasons": {}
},
{
"tool": "edit_scheduled",
"tags": [],
"reasons": {}
},
{
"tool": "get_status",
"tags": [],
"reasons": {}
},
{
"tool": "get_job_status",
"tags": [],
"reasons": {}
},
{
"tool": "get_history",
"tags": [],
"reasons": {}
},
{
"tool": "get_media",
"tags": [],
"reasons": {}
},
{
"tool": "upload_video",
"tags": [],
"reasons": {}
},
{
"tool": "upload_photos",
"tags": [],
"reasons": {}
},
{
"tool": "upload_text",
"tags": [],
"reasons": {}
},
{
"tool": "upload_document",
"tags": [],
"reasons": {}
},
{
"tool": "open_upload_studio",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"read_file\""
]
}
},
{
"tool": "get_account_info",
"tags": [],
"reasons": {}
},
{
"tool": "list_users",
"tags": [],
"reasons": {}
},
{
"tool": "create_user",
"tags": [],
"reasons": {}
},
{
"tool": "delete_user",
"tags": [],
"reasons": {}
},
{
"tool": "generate_jwt",
"tags": [],
"reasons": {}
},
{
"tool": "validate_jwt",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "49bfe01631c4a73efb91a76d273af7bcf91a9a5d093dabe91e5e942a7b8d7357",
"stats": {
"tools": 58,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 1,
"high": 1,
"medium": 2,
"low": 1,
"info": 0
}
}
}