Whatsapp — 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": "@kahflane/whatsapp-mcp",
"source": {
"kind": "package",
"origin": "@kahflane/whatsapp-mcp"
},
"server": {
"name": "@kahflane/whatsapp-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": [
"ingests untrusted external content (a prompt-injection entry point)",
"can send data / act on an external service",
"can execute shell commands or code"
],
"tags": [
"untrusted-input",
"external-sink",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (87 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-SRC-002",
"title": "Shell/command execution in server code (dist/index.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`dist/index.js:34`): 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/index.js"
},
"evidence": "return stmt; }, exec(sql) { raw.exec(sql); }, close() { raw.close(); } }; } // src/st",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "dist/index.js",
"line": 34,
"nonRuntime": false
}
},
{
"ruleId": "MTC-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([wa_download_media, wa_fetch_history, wa_group_info_by_code, wa_groups_list, wa_get_privacy, wa_get_status, wa_get_picture_url, wa_get_business_profile, wa_broadcast_info]) co-exist with external-action tools ([wa_forward_message]). 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": "wa_download_media → wa_forward_message"
},
"evidence": "untrusted [wa_download_media, wa_fetch_history, wa_group_info_by_code, wa_groups_list, wa_get_privacy, wa_get_status, wa_get_picture_url, wa_get_business_profil",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"wa_download_media",
"wa_fetch_history",
"wa_group_info_by_code",
"wa_groups_list",
"wa_get_privacy",
"wa_get_status",
"wa_get_picture_url",
"wa_get_business_profile",
"wa_broadcast_info"
],
"sinks": [
"wa_forward_message"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"wa_download_media",
"wa_fetch_history",
"wa_group_info_by_code",
"wa_groups_list",
"wa_get_privacy",
"wa_get_status",
"wa_get_picture_url",
"wa_get_business_profile",
"wa_broadcast_info"
],
"sensitiveSource": [],
"externalSink": [
"wa_forward_message"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "wa_status",
"tags": [],
"reasons": {}
},
{
"tool": "wa_restrict_sending",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_login_qr",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_pairing_code",
"tags": [],
"reasons": {}
},
{
"tool": "wa_logout",
"tags": [],
"reasons": {}
},
{
"tool": "wa_list_contacts",
"tags": [],
"reasons": {}
},
{
"tool": "wa_resolve_name",
"tags": [],
"reasons": {}
},
{
"tool": "wa_check_number",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_group_members",
"tags": [],
"reasons": {}
},
{
"tool": "wa_list_chats",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_messages",
"tags": [],
"reasons": {}
},
{
"tool": "wa_search_messages",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_unread",
"tags": [],
"reasons": {}
},
{
"tool": "wa_mark_read",
"tags": [],
"reasons": {}
},
{
"tool": "wa_download_media",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"download\""
]
}
},
{
"tool": "wa_fetch_history",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_history_status",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_text",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_media",
"tags": [],
"reasons": {}
},
{
"tool": "wa_react",
"tags": [],
"reasons": {}
},
{
"tool": "wa_edit_message",
"tags": [],
"reasons": {}
},
{
"tool": "wa_delete_message",
"tags": [],
"reasons": {}
},
{
"tool": "wa_forward_message",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"forward_message\""
]
}
},
{
"tool": "wa_pin_message",
"tags": [],
"reasons": {}
},
{
"tool": "wa_schedule_message",
"tags": [],
"reasons": {}
},
{
"tool": "wa_list_scheduled",
"tags": [],
"reasons": {}
},
{
"tool": "wa_cancel_scheduled",
"tags": [],
"reasons": {}
},
{
"tool": "wa_list_templates",
"tags": [],
"reasons": {}
},
{
"tool": "wa_render_template",
"tags": [],
"reasons": {}
},
{
"tool": "wa_create_template",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_template",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_buttons",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_list",
"tags": [],
"reasons": {}
},
{
"tool": "wa_autoreply_set",
"tags": [],
"reasons": {}
},
{
"tool": "wa_autoreply_add_rule",
"tags": [],
"reasons": {}
},
{
"tool": "wa_autoreply_list_rules",
"tags": [],
"reasons": {}
},
{
"tool": "wa_autoreply_remove_rule",
"tags": [],
"reasons": {}
},
{
"tool": "wa_post_status",
"tags": [],
"reasons": {}
},
{
"tool": "wa_post_status_to",
"tags": [],
"reasons": {}
},
{
"tool": "wa_create_group",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_participants",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_update_subject",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_update_description",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_setting",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_leave",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_invite_code",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_join",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_info_by_code",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_group_metadata",
"tags": [],
"reasons": {}
},
{
"tool": "wa_groups_list",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_group_join_requests",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_join_decision",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_ephemeral",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_member_label",
"tags": [],
"reasons": {}
},
{
"tool": "wa_group_add_mode",
"tags": [],
"reasons": {}
},
{
"tool": "wa_archive_chat",
"tags": [],
"reasons": {}
},
{
"tool": "wa_mute_chat",
"tags": [],
"reasons": {}
},
{
"tool": "wa_pin_chat",
"tags": [],
"reasons": {}
},
{
"tool": "wa_star_message",
"tags": [],
"reasons": {}
},
{
"tool": "wa_mark_chat_read",
"tags": [],
"reasons": {}
},
{
"tool": "wa_delete_chat",
"tags": [],
"reasons": {}
},
{
"tool": "wa_delete_message_for_me",
"tags": [],
"reasons": {}
},
{
"tool": "wa_disappearing_chat",
"tags": [],
"reasons": {}
},
{
"tool": "wa_set_name",
"tags": [],
"reasons": {}
},
{
"tool": "wa_set_status",
"tags": [],
"reasons": {}
},
{
"tool": "wa_set_picture",
"tags": [],
"reasons": {}
},
{
"tool": "wa_remove_picture",
"tags": [],
"reasons": {}
},
{
"tool": "wa_block",
"tags": [],
"reasons": {}
},
{
"tool": "wa_blocklist",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_privacy",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_set_privacy",
"tags": [],
"reasons": {}
},
{
"tool": "wa_default_disappearing",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_status",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_get_picture_url",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_get_business_profile",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_subscribe_presence",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_presence",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_location",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_contact",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_poll",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_event",
"tags": [],
"reasons": {}
},
{
"tool": "wa_get_poll_votes",
"tags": [],
"reasons": {}
},
{
"tool": "wa_reject_call",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_product",
"tags": [],
"reasons": {}
},
{
"tool": "wa_send_order",
"tags": [],
"reasons": {}
},
{
"tool": "wa_broadcast_info",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "wa_send_broadcast",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "29f50acecd7cfbc1ada6089a89c2c6ad8eeae326cf38149b01b3cbbe8fc92de4",
"stats": {
"tools": 87,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 1,
"low": 0,
"info": 0
}
}
}