Minecraft Skills — 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": "@minecraft-skills/mcp",
"source": {
"kind": "package",
"origin": "@minecraft-skills/mcp"
},
"server": {
"name": "@minecraft-skills/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 execute shell commands or code"
],
"tags": [
"untrusted-input",
"code-exec"
]
},
"coverage": {
"level": "source",
"inputs": {
"toolSurface": true,
"implementationSource": true,
"packageMetadata": true,
"liveTransport": false
},
"caveats": [
"Tools were statically extracted from the published source (140 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-CAP-001",
"title": "Tool \"run_rcon_command\" exposes command/code execution",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "Tool \"run_rcon_command\" 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": "run_rcon_command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"tags": [
"code-exec"
]
}
},
{
"ruleId": "MTC-FLOW-005",
"title": "Untrusted input can drive an external action",
"category": "exfiltration",
"severity": "medium",
"confidence": "strong",
"description": "Untrusted-input tools ([fetch_mojang_server_jar, fetch_data, fetch_resourcepack_assets, get_resourcepack_asset, search_vanilla_datapack_json_files, search_vanilla_datapack_json_content]) co-exist with external-action tools ([run_rcon_command]). 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": "fetch_mojang_server_jar → run_rcon_command"
},
"evidence": "untrusted [fetch_mojang_server_jar, fetch_data, fetch_resourcepack_assets, get_resourcepack_asset, search_vanilla_datapack_json_files, search_vanilla_datapack_j",
"owasp": "LLM06:2025 Excessive Agency",
"references": [],
"data": {
"untrusted": [
"fetch_mojang_server_jar",
"fetch_data",
"fetch_resourcepack_assets",
"get_resourcepack_asset",
"search_vanilla_datapack_json_files",
"search_vanilla_datapack_json_content"
],
"sinks": [
"run_rcon_command"
]
}
},
{
"ruleId": "MTC-CAP-006",
"title": "Unconstrained command parameter \"command\" on \"run_rcon_command\"",
"category": "permissions",
"severity": "medium",
"confidence": "heuristic",
"description": "Tool \"run_rcon_command\" takes a command-shaped parameter \"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": "run_rcon_command",
"field": "inputSchema.properties.command"
},
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"param": "command"
}
},
{
"ruleId": "MTC-CAP-005",
"title": "Mutating tool \"run_rcon_command\" declares no destructiveHint",
"category": "hygiene",
"severity": "low",
"confidence": "heuristic",
"description": "Tool \"run_rcon_command\" 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": "run_rcon_command"
},
"data": {
"tags": [
"code-exec"
]
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "medium",
"confidence": "strong",
"untrustedInput": [
"fetch_mojang_server_jar",
"fetch_data",
"fetch_resourcepack_assets",
"get_resourcepack_asset",
"search_vanilla_datapack_json_files",
"search_vanilla_datapack_json_content"
],
"sensitiveSource": [],
"externalSink": [
"run_rcon_command"
],
"selfContained": false,
"description": "Untrusted input can drive an external action even though no sensitive source is exposed."
}
],
"capabilities": [
{
"tool": "get_evaluation_status",
"tags": [],
"reasons": {}
},
{
"tool": "list_pending_evaluations",
"tags": [],
"reasons": {}
},
{
"tool": "record_tool_evaluation",
"tags": [],
"reasons": {}
},
{
"tool": "target_version",
"tags": [],
"reasons": {}
},
{
"tool": "task",
"tags": [],
"reasons": {}
},
{
"tool": "use_minecraft_datapacks",
"tags": [],
"reasons": {}
},
{
"tool": "use_minecraft_resourcepacks",
"tags": [],
"reasons": {}
},
{
"tool": "use_minecraft_paper_plugins",
"tags": [],
"reasons": {}
},
{
"tool": "authoring-checklists.json",
"tags": [],
"reasons": {}
},
{
"tool": "authoring-guardrails.json",
"tags": [],
"reasons": {}
},
{
"tool": "authoring-diagnostics.json",
"tags": [],
"reasons": {}
},
{
"tool": "authoring-recipes.json",
"tags": [],
"reasons": {}
},
{
"tool": "authoring-scenarios.json",
"tags": [],
"reasons": {}
},
{
"tool": "claim-policies.json",
"tags": [],
"reasons": {}
},
{
"tool": "output-requirements.json",
"tags": [],
"reasons": {}
},
{
"tool": "response-patterns.json",
"tags": [],
"reasons": {}
},
{
"tool": "fact-surfaces.json",
"tags": [],
"reasons": {}
},
{
"tool": "intent-lookups.json",
"tags": [],
"reasons": {}
},
{
"tool": "data-manifest.json",
"tags": [],
"reasons": {}
},
{
"tool": "lookup_java_player_profile",
"tags": [],
"reasons": {}
},
{
"tool": "get_verified_java_player_textures",
"tags": [],
"reasons": {}
},
{
"tool": "list_domains",
"tags": [],
"reasons": {}
},
{
"tool": "list_skills",
"tags": [],
"reasons": {}
},
{
"tool": "get_skill",
"tags": [],
"reasons": {}
},
{
"tool": "list_authoring_checklists",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_checklist",
"tags": [],
"reasons": {}
},
{
"tool": "list_authoring_recipes",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_recipe",
"tags": [],
"reasons": {}
},
{
"tool": "search_authoring_scenarios",
"tags": [],
"reasons": {}
},
{
"tool": "list_authoring_scenarios",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_scenario",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_plan",
"tags": [],
"reasons": {}
},
{
"tool": "search_catalog",
"tags": [],
"reasons": {}
},
{
"tool": "validate_server_properties",
"tags": [],
"reasons": {}
},
{
"tool": "get_rcon_config_status",
"tags": [],
"reasons": {}
},
{
"tool": "create_rcon_config",
"tags": [],
"reasons": {}
},
{
"tool": "list_authoring_guardrails",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_guardrail",
"tags": [],
"reasons": {}
},
{
"tool": "list_authoring_diagnostics",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_diagnostic",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_context",
"tags": [],
"reasons": {}
},
{
"tool": "list_claim_policies",
"tags": [],
"reasons": {}
},
{
"tool": "get_claim_policy",
"tags": [],
"reasons": {}
},
{
"tool": "list_output_requirements",
"tags": [],
"reasons": {}
},
{
"tool": "get_output_requirement",
"tags": [],
"reasons": {}
},
{
"tool": "list_response_patterns",
"tags": [],
"reasons": {}
},
{
"tool": "get_response_pattern",
"tags": [],
"reasons": {}
},
{
"tool": "get_authoring_preflight",
"tags": [],
"reasons": {}
},
{
"tool": "get_evidence_bundle",
"tags": [],
"reasons": {}
},
{
"tool": "get_source_report",
"tags": [],
"reasons": {}
},
{
"tool": "list_source_tiers",
"tags": [],
"reasons": {}
},
{
"tool": "get_source_tier",
"tags": [],
"reasons": {}
},
{
"tool": "list_community_datasets",
"tags": [],
"reasons": {}
},
{
"tool": "search_community_datasets",
"tags": [],
"reasons": {}
},
{
"tool": "get_community_dataset",
"tags": [],
"reasons": {}
},
{
"tool": "list_intent_lookups",
"tags": [],
"reasons": {}
},
{
"tool": "get_intent_lookup",
"tags": [],
"reasons": {}
},
{
"tool": "list_fact_surfaces",
"tags": [],
"reasons": {}
},
{
"tool": "get_fact_surface",
"tags": [],
"reasons": {}
},
{
"tool": "get_coverage_summary",
"tags": [],
"reasons": {}
},
{
"tool": "get_data_manifest",
"tags": [],
"reasons": {}
},
{
"tool": "get_support_matrix",
"tags": [],
"reasons": {}
},
{
"tool": "list_version_support",
"tags": [],
"reasons": {}
},
{
"tool": "get_cache_status",
"tags": [],
"reasons": {}
},
{
"tool": "fetch_mojang_server_jar",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "fetch_data",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "clean_cache",
"tags": [],
"reasons": {}
},
{
"tool": "latest_version",
"tags": [],
"reasons": {}
},
{
"tool": "list_versions",
"tags": [],
"reasons": {}
},
{
"tool": "get_mojang_version_metadata",
"tags": [],
"reasons": {}
},
{
"tool": "get_version",
"tags": [],
"reasons": {}
},
{
"tool": "list_pack_formats",
"tags": [],
"reasons": {}
},
{
"tool": "get_pack_format",
"tags": [],
"reasons": {}
},
{
"tool": "find_versions_by_pack_format",
"tags": [],
"reasons": {}
},
{
"tool": "compare_versions",
"tags": [],
"reasons": {}
},
{
"tool": "get_server_reports",
"tags": [],
"reasons": {}
},
{
"tool": "search_registry_entries",
"tags": [],
"reasons": {}
},
{
"tool": "compare_registry_entries",
"tags": [],
"reasons": {}
},
{
"tool": "get_datapack_schema_surface",
"tags": [],
"reasons": {}
},
{
"tool": "search_datapack_schema",
"tags": [],
"reasons": {}
},
{
"tool": "compare_datapack_schema",
"tags": [],
"reasons": {}
},
{
"tool": "classify_pack_files",
"tags": [],
"reasons": {}
},
{
"tool": "get_pack_file_schema",
"tags": [],
"reasons": {}
},
{
"tool": "validate_pack_files",
"tags": [],
"reasons": {}
},
{
"tool": "validate_datapack_json",
"tags": [],
"reasons": {}
},
{
"tool": "inspect_resourcepack_png_alpha_bounds",
"tags": [],
"reasons": {}
},
{
"tool": "validate_player_skin_layout",
"tags": [],
"reasons": {}
},
{
"tool": "validate_resourcepack_png",
"tags": [],
"reasons": {}
},
{
"tool": "validate_datapack_project",
"tags": [],
"reasons": {}
},
{
"tool": "validate_resourcepack_project",
"tags": [],
"reasons": {}
},
{
"tool": "validate_server_access_list",
"tags": [],
"reasons": {}
},
{
"tool": "inspect_blockbench_project",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_minecraft_performance",
"tags": [],
"reasons": {}
},
{
"tool": "validate_resourcepack_translations",
"tags": [],
"reasons": {}
},
{
"tool": "get_pack_migration_plan",
"tags": [],
"reasons": {}
},
{
"tool": "validate_mixin_config",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_minecraft_log",
"tags": [],
"reasons": {}
},
{
"tool": "search_all",
"tags": [],
"reasons": {}
},
{
"tool": "validate_modrinth_pack",
"tags": [],
"reasons": {}
},
{
"tool": "validate_fabric_mod",
"tags": [],
"reasons": {}
},
{
"tool": "validate_paper_plugin_jar",
"tags": [],
"reasons": {}
},
{
"tool": "validate_velocity_plugin_jar",
"tags": [],
"reasons": {}
},
{
"tool": "get_fabric_toolchain",
"tags": [],
"reasons": {}
},
{
"tool": "search_fabric_api_types",
"tags": [],
"reasons": {}
},
{
"tool": "search_fabric_api_members",
"tags": [],
"reasons": {}
},
{
"tool": "resolve_velocity_toolchain",
"tags": [],
"reasons": {}
},
{
"tool": "search_modrinth_projects",
"tags": [],
"reasons": {}
},
{
"tool": "list_modrinth_project_versions",
"tags": [],
"reasons": {}
},
{
"tool": "resolve_modrinth_compatibility",
"tags": [],
"reasons": {}
},
{
"tool": "get_modrinth_resource",
"tags": [],
"reasons": {}
},
{
"tool": "find_datapack_entries",
"tags": [],
"reasons": {}
},
{
"tool": "find_resourcepack_assets",
"tags": [],
"reasons": {}
},
{
"tool": "explain_pack_path",
"tags": [],
"reasons": {}
},
{
"tool": "suggest_minecraft_lookups",
"tags": [],
"reasons": {}
},
{
"tool": "search_commands",
"tags": [],
"reasons": {}
},
{
"tool": "compare_commands",
"tags": [],
"reasons": {}
},
{
"tool": "get_resourcepack_model_summary",
"tags": [],
"reasons": {}
},
{
"tool": "search_resourcepack_models",
"tags": [],
"reasons": {}
},
{
"tool": "get_resourcepack_assets_status",
"tags": [],
"reasons": {}
},
{
"tool": "fetch_resourcepack_assets",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "search_resourcepack_assets",
"tags": [],
"reasons": {}
},
{
"tool": "get_resourcepack_asset",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "get_vanilla_inventory",
"tags": [],
"reasons": {}
},
{
"tool": "search_vanilla_datapack_json_files",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "search_vanilla_datapack_json_content",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"fetch\""
]
}
},
{
"tool": "get_vanilla_datapack_json",
"tags": [],
"reasons": {}
},
{
"tool": "search_vanilla_paths",
"tags": [],
"reasons": {}
},
{
"tool": "compare_vanilla_paths",
"tags": [],
"reasons": {}
},
{
"tool": "list_references",
"tags": [],
"reasons": {}
},
{
"tool": "get_paper_plugin_data",
"tags": [],
"reasons": {}
},
{
"tool": "get_paper_api_reference",
"tags": [],
"reasons": {}
},
{
"tool": "get_paper_api_index",
"tags": [],
"reasons": {}
},
{
"tool": "compare_paper_api",
"tags": [],
"reasons": {}
},
{
"tool": "get_paper_api_surface",
"tags": [],
"reasons": {}
},
{
"tool": "search_paper_types",
"tags": [],
"reasons": {}
},
{
"tool": "search_paper_members",
"tags": [],
"reasons": {}
},
{
"tool": "compare_paper_api_surface",
"tags": [],
"reasons": {}
},
{
"tool": "search_paper_events",
"tags": [],
"reasons": {}
},
{
"tool": "get_source_policy",
"tags": [],
"reasons": {}
},
{
"tool": "run_rcon_command",
"tags": [
"code-exec"
],
"reasons": {
"code-exec": [
"parameter \"command\""
]
}
}
],
"surfaceDigest": "8561b531ffd6268faf336388c1e6de2ed7b4936cf2211fd36cb95da855a16151",
"stats": {
"tools": 140,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 2,
"low": 1,
"info": 0
}
}
}