Elf — the complete, unedited output of the deterministic mcptrustchecker engine v1.7.0, scanned . Every finding, capability tag and score component below is exactly what the engine produced — no AI, no post-processing.
{
"tool": {
"name": "mcptrustchecker",
"version": "1.7.0",
"methodologyVersion": "mcptrustchecker-1.7"
},
"target": {
"id": "elf-mcp-server",
"source": {
"kind": "package",
"origin": "elf-mcp-server"
},
"server": {
"name": "elf-mcp-server"
}
},
"grade": "B",
"score": {
"score": 81,
"threatScore": 92,
"grade": "B",
"band": "B",
"categorySubtotals": {
"injection": 2.22,
"exfiltration": 0,
"permissions": 0,
"supply-chain": 5.7,
"network": 0,
"hygiene": 0
},
"vector": [
{
"kind": "threat",
"ruleId": "MTC-INJ-CAPS",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"rawWeight": 3,
"confidenceMult": 0.4,
"diminishingFactor": 1,
"appliedPenalty": 1.2
},
{
"kind": "threat",
"ruleId": "MTC-INJ-CAPS",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"rawWeight": 3,
"confidenceMult": 0.4,
"diminishingFactor": 0.5,
"appliedPenalty": 0.6
},
{
"kind": "threat",
"ruleId": "MTC-INJ-CAPS",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"rawWeight": 3,
"confidenceMult": 0.4,
"diminishingFactor": 0.25,
"appliedPenalty": 0.3
},
{
"kind": "threat",
"ruleId": "MTC-INJ-CAPS",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"rawWeight": 3,
"confidenceMult": 0.4,
"diminishingFactor": 0.1,
"appliedPenalty": 0.12
},
{
"kind": "threat",
"ruleId": "MTC-SUP-005",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"rawWeight": 9,
"confidenceMult": 0.4,
"diminishingFactor": 1,
"appliedPenalty": 3.6
},
{
"kind": "threat",
"ruleId": "MTC-SUP-011",
"category": "supply-chain",
"severity": "low",
"confidence": "strong",
"rawWeight": 3,
"confidenceMult": 0.7,
"diminishingFactor": 1,
"appliedPenalty": 2.1
},
{
"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": "none",
"label": "publisher verification (unlocatable) — no provenance and no public repository to inspect",
"appliedPenalty": 5
},
{
"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-1.7"
},
"capability": {
"level": "high",
"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)",
"untrusted-input, sensitive-source and egress co-exist across tools (toxic-flow surface)"
],
"tags": [
"external-sink",
"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 (86 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: elf_python_pm_demag_step_lint → elf_mcp_readiness. Untrusted input is ingested, private data is read, and it can be sent to an external sink via the agent composing the tools (→). 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": "elf_python_pm_demag_step_lint → elf_mcp_readiness"
},
"owasp": "LLM02:2025 Sensitive Information Disclosure",
"references": [],
"data": {
"untrusted": [
"elf_python_pm_demag_step_lint",
"elf_wiki_index"
],
"sources": [
"elf_python_pm_demag_step_lint"
],
"sinks": [
"elf_mcp_readiness"
],
"path": [
"elf_python_pm_demag_step_lint",
"elf_mcp_readiness"
],
"edges": [
{
"from": "elf_python_pm_demag_step_lint",
"to": "elf_mcp_readiness",
"kind": "agent-mediated"
}
],
"wired": false
}
},
{
"ruleId": "MTC-SUP-005",
"title": "Near-miss of exa-mcp-server (edit distance 2)",
"category": "supply-chain",
"severity": "medium",
"confidence": "heuristic",
"description": "\"elf-mcp-server\" is edit-distance 2 from the package \"exa-mcp-server\". Verify this is the intended package.",
"remediation": "Confirm you meant \"exa-mcp-server\". Install packages only from their documented, official name.",
"location": {
"kind": "package",
"name": "elf-mcp-server"
},
"owasp": "LLM03:2025 Supply Chain",
"references": [
"https://github.com/ossf/package-analysis",
"https://owasp.org/www-project-top-10-ci-cd-security-risks/"
],
"data": {
"candidate": "elf-mcp-server",
"target": "exa-mcp-server"
}
},
{
"ruleId": "MTC-INJ-CAPS",
"title": "Excessive ALL-CAPS emphasis in metadata",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"description": "A run of shouted words is a common way to give injected instructions false authority.",
"location": {
"kind": "tool",
"name": "elf_overview",
"field": "description"
},
"evidence": "RECOMMENDED FIRST CALL. Catalog of ELF MCP's 86 tools + 1\n prompt, with public-safe routing hints for MCP clients.\n\n "
},
{
"ruleId": "MTC-INJ-CAPS",
"title": "Excessive ALL-CAPS emphasis in metadata",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"description": "A run of shouted words is a common way to give injected instructions false authority.",
"location": {
"kind": "tool",
"name": "elf_examples_index",
"field": "description"
},
"evidence": "List all 332 ELF600 example input files (.mai analysis + .mei mesh + .txt + .props + .model)\n bundled with this serve"
},
{
"ruleId": "MTC-INJ-CAPS",
"title": "Excessive ALL-CAPS emphasis in metadata",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"description": "A run of shouted words is a common way to give injected instructions false authority.",
"location": {
"kind": "tool",
"name": "elf_examples_search",
"field": "description"
},
"evidence": "Substring-search across all 332 ELF600 example input files (case-insensitive).\n\n Multiple keywords (space-separated) "
},
{
"ruleId": "MTC-INJ-CAPS",
"title": "Excessive ALL-CAPS emphasis in metadata",
"category": "injection",
"severity": "low",
"confidence": "heuristic",
"description": "A run of shouted words is a common way to give injected instructions false authority.",
"location": {
"kind": "tool",
"name": "elf_sample_decks_search",
"field": "description"
},
"evidence": "Search lab-authored public sample deck paths and text.\n\n Multiple keywords require all terms to match. Use this to fi"
},
{
"ruleId": "MTC-SUP-011",
"title": "Package has no source repository",
"category": "supply-chain",
"severity": "low",
"confidence": "strong",
"description": "\"elf-mcp-server\" declares no repository URL, so its published artifact cannot be compared against reviewable source.",
"remediation": "Prefer packages that link to public, reviewable source.",
"location": {
"kind": "package",
"name": "elf-mcp-server"
}
}
],
"toxicFlows": [
{
"id": "flow-1",
"severity": "critical",
"confidence": "strong",
"untrustedInput": [
"elf_python_pm_demag_step_lint",
"elf_wiki_index"
],
"sensitiveSource": [
"elf_python_pm_demag_step_lint"
],
"externalSink": [
"elf_mcp_readiness"
],
"selfContained": false,
"path": [
"elf_python_pm_demag_step_lint",
"elf_mcp_readiness"
],
"pathWired": false,
"description": "A cross-tool exfiltration chain exists: elf_python_pm_demag_step_lint → elf_mcp_readiness."
}
],
"capabilities": [
{
"tool": "elf_overview",
"tags": [],
"reasons": {}
},
{
"tool": "elf_agentic_profile",
"tags": [],
"reasons": {}
},
{
"tool": "elf_usage",
"tags": [],
"reasons": {}
},
{
"tool": "elf_mcp_readiness",
"tags": [
"external-sink"
],
"reasons": {
"external-sink": [
"keyword \"publish\""
]
}
},
{
"tool": "elf_motor_readiness",
"tags": [],
"reasons": {}
},
{
"tool": "elf_motor_hybrid_router",
"tags": [],
"reasons": {}
},
{
"tool": "elf_motor_mmm_quick_check",
"tags": [],
"reasons": {}
},
{
"tool": "elf_help_index",
"tags": [],
"reasons": {}
},
{
"tool": "elf_help_search",
"tags": [],
"reasons": {}
},
{
"tool": "elf_examples_index",
"tags": [],
"reasons": {}
},
{
"tool": "elf_examples_search",
"tags": [],
"reasons": {}
},
{
"tool": "elf_examples_get",
"tags": [],
"reasons": {}
},
{
"tool": "elf_examples_playbook",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_index",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_search",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_route",
"tags": [],
"reasons": {}
},
{
"tool": "elf_local_simulation_handoff",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_get",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_playbook",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_representatives",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_validation",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_quality",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_physics",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_validation_matrix",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_observable_contracts",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_cross_validation",
"tags": [],
"reasons": {}
},
{
"tool": "elf_sample_decks_duplicates",
"tags": [],
"reasons": {}
},
{
"tool": "elf_public_promotion",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_team28",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_interface_design",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_api_manual",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_api_schema",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_spec_lint",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_deck_lint",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_pm_demag_step_lint",
"tags": [
"untrusted-input",
"sensitive-source"
],
"reasons": {
"untrusted-input": [
"keyword \"read_pr\""
],
"sensitive-source": [
"keyword \"read_private\""
]
}
},
{
"tool": "elf_python_run_contract",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_run_result_parse",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_run_result_parse_path",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_design_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_sweep_matrix",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_dq_axis_map_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_mtpa_search_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_reluctance_motor_design_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_winding_layout_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_topology_parameter_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_demag_margin_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_drive_cycle_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_optimization_study_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_optimization_loop",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_voltage_field_weakening_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_cogging_ripple_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_airgap_harmonics_nvh_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_thermal_network_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_manufacturing_tolerance_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_material_variation_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_feasibility_study",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_efficiency_map_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_efficiency_map_from_results",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_operating_point_run_queue",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_inverter_pwm_harmonic_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_saturation_inductance_map_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_loss_model_contract",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_torque_speed_envelope",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_induction_slip_sweep_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_observable_contract",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_market_brief",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_design_agent_handoff",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_ngsolve_result_crosscheck",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_drawing_bom_handoff",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_rotor_stress_retention_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_motor_validation_scorecard",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_ngsolve_validation_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_ngsolve_validation_script",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_meg_generation_plan",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_2d_motor_template",
"tags": [],
"reasons": {}
},
{
"tool": "elf_recipe_index",
"tags": [],
"reasons": {}
},
{
"tool": "elf_recipe_search",
"tags": [],
"reasons": {}
},
{
"tool": "elf_recipe_get",
"tags": [],
"reasons": {}
},
{
"tool": "elf_plan_workflow",
"tags": [],
"reasons": {}
},
{
"tool": "elf_help_get",
"tags": [],
"reasons": {}
},
{
"tool": "elf_wiki_index",
"tags": [
"untrusted-input"
],
"reasons": {
"untrusted-input": [
"keyword \"crawl\""
]
}
},
{
"tool": "elf_wiki_search",
"tags": [],
"reasons": {}
},
{
"tool": "elf_wiki_get",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_index",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_search",
"tags": [],
"reasons": {}
},
{
"tool": "elf_python_get",
"tags": [],
"reasons": {}
}
],
"surfaceDigest": "19e34d70433a860a90d05eae5c4489ba107ee7e77f30be2f11094f4ab23d63c3",
"stats": {
"tools": 86,
"prompts": 0,
"resources": 0,
"findingsBySeverity": {
"critical": 1,
"high": 0,
"medium": 1,
"low": 5,
"info": 0
}
}
}