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Finance Toolkit — agentic threat model

4.8AIVSS 4.8 · Medium

The Finance Toolkit MCP presents a low agentic risk profile due to its deterministic, open-source calculation engine, though security risks exist around the exposure of market-data API keys and the potential for downstream decision-making errors if input data is poisoned.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 5.3AARS uplift 0.66Factor sum 1.4/10Threat ×1.0Mitigation ×0.8
Autonomy of Action
0.20
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.40
Persistent Memory
0.00
Contextual Awareness
0.20
Dynamic Identity
0.10
Multi-Agent Interactions
0.20
Non-Determinism
0.10
Opacity & Reflexivity
0.10

Scored with the canonical OWASP AIVSS formula (AIVSS calculator reference); agentic risk factors estimated from the agent’s described capabilities.

MAESTRO 7-layer threat model

Per-layer threats for this agent. Layers tagged “not certain from listing” are general, caveated commentary where the public description didn’t pin that layer.

L1 · Foundation Models⚠ not certain from listing

Not certain from the listing — The listing describes an MCP tool/library but does not specify the underlying LLM used to orchestrate it, leaving model-level vulnerabilities like prompt injection or reprogramming dependent on the host LLM.

L2 · Data Operations✓ mapped

Processes raw financial statements (provided or fetched). Primary threats include data poisoning of input statements leading to incorrect metrics, and potential leakage of sensitive proprietary financial data during processing.

L3 · Agent Frameworks✓ mapped

Exposed as an MCP tool. Threats include insecure tool integration where an orchestrating agent passes malicious inputs to the Python calculation engine, or framework-level vulnerabilities in the MCP host.

L4 · Deployment & Infrastructure✓ mapped

Computes locally using a Python core. The primary infrastructure threat is the exposure or theft of market-data API keys used to source financial statements, alongside potential local code execution if the underlying Python library contains vulnerabilities.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — While the listing highlights 'transparent calculations' and an 'open-source Python core' which aid in manual auditability, it does not detail active runtime monitoring, logging, or guardrails for anomalous tool calls.

L6 · Security & Compliance (cross-cutting)✓ mapped

Security controls focus on the management of market-data API keys. No formal compliance certifications (e.g., SOC2) are mentioned, but the open-source nature allows organizations to perform independent code audits.

L7 · Agent Ecosystem✓ mapped

Designed as an MCP tool to be integrated into broader agent ecosystems. Threats include agent-to-agent trust abuse, where a compromised orchestrator intercepts computed metrics or manipulates the tool's parameters to feed poisoned data to other agents.

MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).