Reaper — the complete, unedited output of the deterministic mcptrustchecker engine v1.9.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.9.0",
"methodologyVersion": "mcptrustchecker-1.9"
},
"target": {
"id": "@mthines/reaper-mcp",
"source": {
"kind": "package",
"origin": "@mthines/reaper-mcp"
},
"server": {
"name": "@mthines/reaper-mcp"
}
},
"grade": "B",
"score": {
"score": 88,
"threatScore": 94,
"grade": "B",
"band": "B",
"categorySubtotals": {
"injection": 6.3,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 0,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-SRC-009",
"category": "injection",
"severity": "medium",
"confidence": "strong",
"rawWeight": 9,
"confidenceMult": 0.7,
"diminishingFactor": 1,
"appliedPenalty": 6.3
},
{
"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": "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-1.9"
},
"capability": {
"level": "high",
"reasons": [
"reads sensitive or local data",
"has a read → egress path (a data-exfiltration surface)",
"can execute shell commands or code"
],
"tags": [
"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 (85 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 (main.js)",
"category": "permissions",
"severity": "high",
"confidence": "strong",
"description": "In the server's implementation (`main.js:2241`): 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": "main.js"
},
"evidence": "rt { spawn } from \"node:child_process\"; import { existsSync } from \"node:fs\"; import { join as join3 } from \"node:path\";",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-002",
"file": "main.js",
"line": 2241,
"nonRuntime": false
}
},
{
"ruleId": "MTC-SRC-009",
"title": "Untrusted input concatenated into a command sink (main.js)",
"category": "injection",
"severity": "medium",
"confidence": "strong",
"description": "In the server's implementation (`main.js:2992`): A shell/process command assembled from concatenated or interpolated values is command injection when any part is attacker-influenced — the OWASP canonical RCE flow. Verify what reaches the interpolated value. 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": "main.js"
},
"evidence": "const result = await exec(`\"${pythonBin}\" --version`); stdout = (result.stdout + result.stderr).trim(); } catch",
"owasp": "LLM05:2025 Improper Output Handling",
"data": {
"rule": "MTC-SRC-009",
"file": "main.js",
"line": 2992,
"nonRuntime": false
}
}
],
"toxicFlows": [],
"capabilities": [
{
"tool": "get_project_info",
"tags": [],
"reasons": {}
},
{
"tool": "list_tracks",
"tags": [],
"reasons": {}
},
{
"tool": "get_track_properties",
"tags": [],
"reasons": {}
},
{
"tool": "set_track_property",
"tags": [],
"reasons": {}
},
{
"tool": "add_fx",
"tags": [],
"reasons": {}
},
{
"tool": "remove_fx",
"tags": [],
"reasons": {}
},
{
"tool": "get_fx_parameters",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_fx",
"tags": [],
"reasons": {}
},
{
"tool": "set_fx_parameter",
"tags": [],
"reasons": {}
},
{
"tool": "set_fx_enabled",
"tags": [],
"reasons": {}
},
{
"tool": "set_fx_offline",
"tags": [],
"reasons": {}
},
{
"tool": "read_track_meters",
"tags": [],
"reasons": {}
},
{
"tool": "read_track_spectrum",
"tags": [],
"reasons": {}
},
{
"tool": "play",
"tags": [],
"reasons": {}
},
{
"tool": "stop",
"tags": [],
"reasons": {}
},
{
"tool": "record",
"tags": [],
"reasons": {}
},
{
"tool": "get_transport_state",
"tags": [],
"reasons": {}
},
{
"tool": "set_cursor_position",
"tags": [],
"reasons": {}
},
{
"tool": "list_available_fx",
"tags": [],
"reasons": {}
},
{
"tool": "search_fx",
"tags": [],
"reasons": {}
},
{
"tool": "get_fx_preset_list",
"tags": [],
"reasons": {}
},
{
"tool": "set_fx_preset",
"tags": [],
"reasons": {}
},
{
"tool": "snapshot_save",
"tags": [],
"reasons": {}
},
{
"tool": "snapshot_restore",
"tags": [],
"reasons": {}
},
{
"tool": "snapshot_list",
"tags": [],
"reasons": {}
},
{
"tool": "snapshot_delete",
"tags": [],
"reasons": {}
},
{
"tool": "get_track_routing",
"tags": [],
"reasons": {}
},
{
"tool": "read_track_lufs",
"tags": [],
"reasons": {}
},
{
"tool": "read_track_correlation",
"tags": [],
"reasons": {}
},
{
"tool": "read_track_crest",
"tags": [],
"reasons": {}
},
{
"tool": "measure_tracks",
"tags": [],
"reasons": {}
},
{
"tool": "create_midi_item",
"tags": [],
"reasons": {}
},
{
"tool": "list_midi_items",
"tags": [],
"reasons": {}
},
{
"tool": "get_midi_notes",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_midi",
"tags": [],
"reasons": {}
},
{
"tool": "insert_midi_note",
"tags": [],
"reasons": {}
},
{
"tool": "insert_midi_notes",
"tags": [],
"reasons": {}
},
{
"tool": "edit_midi_note",
"tags": [],
"reasons": {}
},
{
"tool": "edit_midi_notes",
"tags": [],
"reasons": {}
},
{
"tool": "delete_midi_note",
"tags": [],
"reasons": {}
},
{
"tool": "get_midi_cc",
"tags": [],
"reasons": {}
},
{
"tool": "insert_midi_cc",
"tags": [],
"reasons": {}
},
{
"tool": "delete_midi_cc",
"tags": [],
"reasons": {}
},
{
"tool": "get_midi_item_properties",
"tags": [],
"reasons": {}
},
{
"tool": "set_midi_item_properties",
"tags": [],
"reasons": {}
},
{
"tool": "send_midi_cc",
"tags": [],
"reasons": {}
},
{
"tool": "send_midi_pc",
"tags": [],
"reasons": {}
},
{
"tool": "send_midi_note",
"tags": [],
"reasons": {}
},
{
"tool": "list_media_items",
"tags": [],
"reasons": {}
},
{
"tool": "get_media_item_properties",
"tags": [],
"reasons": {}
},
{
"tool": "set_media_item_properties",
"tags": [],
"reasons": {}
},
{
"tool": "set_media_items_properties",
"tags": [],
"reasons": {}
},
{
"tool": "split_media_item",
"tags": [],
"reasons": {}
},
{
"tool": "delete_media_item",
"tags": [],
"reasons": {}
},
{
"tool": "move_media_item",
"tags": [],
"reasons": {}
},
{
"tool": "trim_media_item",
"tags": [],
"reasons": {}
},
{
"tool": "add_stretch_marker",
"tags": [],
"reasons": {}
},
{
"tool": "get_stretch_markers",
"tags": [],
"reasons": {}
},
{
"tool": "delete_stretch_marker",
"tags": [],
"reasons": {}
},
{
"tool": "get_selected_tracks",
"tags": [],
"reasons": {}
},
{
"tool": "get_time_selection",
"tags": [],
"reasons": {}
},
{
"tool": "set_time_selection",
"tags": [],
"reasons": {}
},
{
"tool": "list_markers",
"tags": [],
"reasons": {}
},
{
"tool": "list_regions",
"tags": [],
"reasons": {}
},
{
"tool": "add_marker",
"tags": [],
"reasons": {}
},
{
"tool": "add_region",
"tags": [],
"reasons": {}
},
{
"tool": "delete_marker",
"tags": [],
"reasons": {}
},
{
"tool": "delete_region",
"tags": [],
"reasons": {}
},
{
"tool": "get_tempo_map",
"tags": [],
"reasons": {}
},
{
"tool": "get_track_envelopes",
"tags": [],
"reasons": {}
},
{
"tool": "get_envelope_points",
"tags": [
"sensitive-source"
],
"reasons": {
"sensitive-source": [
"keyword \"get_env\""
]
}
},
{
"tool": "insert_envelope_point",
"tags": [],
"reasons": {}
},
{
"tool": "delete_envelope_point",
"tags": [],
"reasons": {}
},
{
"tool": "create_track_envelope",
"tags": [],
"reasons": {}
},
{
"tool": "set_envelope_properties",
"tags": [],
"reasons": {}
},
{
"tool": "clear_envelope",
"tags": [],
"reasons": {}
},
{
"tool": "remove_envelope_points",
"tags": [],
"reasons": {}
},
{
"tool": "insert_envelope_points",
"tags": [],
"reasons": {}
},
{
"tool": "set_multiple_track_properties",
"tags": [],
"reasons": {}
},
{
"tool": "setup_fx_chain",
"tags": [],
"reasons": {}
},
{
"tool": "set_multiple_fx_parameters",
"tags": [],
"reasons": {}
},
{
"tool": "list_tool_categories",
"tags": [],
"reasons": {}
},
{
"tool": "enable_tool_category",
"tags": [],
"reasons": {}
},
{
"tool": "disable_tool_category",
"tags": [],
"reasons": {}
},
{
"tool": "analyze_track_aesthetics",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "d6d655f46d5e92c6f8b0e274813558a220d906bb808830b77644a0f4764f3b96",
"stats": {
"tools": 85,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 0,
"high": 1,
"medium": 1,
"low": 0,
"info": 0
}
}
}