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Polymarket MCP — agentic threat model

5.2AIVSS 5.2 · Medium

The Polymarket MCP agent acts as a read-only data connector for prediction markets, presenting low direct agentic risk, but it poses significant downstream risks if other agents consume its financial data without validation.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 4.3AARS uplift 0.85Factor sum 1.5/10Threat ×1.0Mitigation ×1.0
Autonomy of Action
0.10
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.20
Persistent Memory
0.00
Contextual Awareness
0.30
Dynamic Identity
0.00
Multi-Agent Interactions
0.40
Non-Determinism
0.20
Opacity & Reflexivity
0.20

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 underlying foundation model is not specified. Standard threats like prompt injection could manipulate how the agent filters or interprets market data before passing it to downstream systems.

L2 · Data Operations✓ mapped

The agent reads public Polymarket data. The primary threat is data poisoning or manipulation at the source (Polymarket API), which could feed inaccurate probability or liquidity metrics to downstream agents.

L3 · Agent Frameworks✓ mapped

As an MCP (Model Context Protocol) tool, it integrates into broader agent frameworks. Insecure tool integration or lack of input validation on the query parameters could lead to tool misuse or unexpected framework behavior.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — The hosting environment, network sandboxing, and transport security for the MCP connection are not detailed. Standard containerization and secure API transport are required.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — There is no mention of built-in logging, telemetry, or output guardrails to detect if the agent is retrieving corrupted or anomalous market data.

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

The listing explicitly warns that results should be treated as untrusted inputs. There are no built-in compliance controls, access policies, or financial-grade audit trails mentioned.

L7 · Agent Ecosystem✓ mapped

High relevance. This agent is designed to feed data to other agents. A2A trust abuse is a major threat if downstream decision-making agents blindly trust this agent's market analysis to execute financial trades.

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