eSignatures — agentic threat model
This agent acts as a high-risk bridge between LLMs and legally binding contracts via eSignatures.com, presenting significant financial and legal liabilities if compromised due to its ability to dispatch signature requests.
OWASP AIVSS score rationale
| Autonomy of Action | 0.70 | |
| Goal-Driven Planning | 0.50 | |
| Self-Modification | 0.10 | |
| Dynamic Tool Use | 0.80 | |
| Persistent Memory | 0.30 | |
| Contextual Awareness | 0.60 | |
| Dynamic Identity | 0.40 | |
| Multi-Agent Interactions | 0.50 | |
| Non-Determinism | 0.60 | |
| Opacity & Reflexivity | 0.50 |
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.
Not certain from the listing — The underlying foundation model is not specified, but adversarial prompt injection could trick the model into generating fraudulent contract templates or sending unauthorized signature requests.
Not certain from the listing — The data operations layer is not detailed, but the agent must handle sensitive personally identifiable information (PII) such as signer names, emails, and contract contents, making data exfiltration and poisoning critical threats.
The agent framework exposes tools to create templates, send documents, and manage signers. Insecure tool integration or lack of strict input validation could allow an attacker to hijack the tool parameters to send unauthorized legally binding documents.
Not certain from the listing — The hosting environment of the MCP server is not specified, but secure storage of eSignatures.com API keys and secrets is paramount to prevent unauthorized API access.
Not certain from the listing — The description notes that human oversight is important, but does not specify if the agent framework enforces human-in-the-loop (HITL) guardrails or logging for signature dispatches.
The agent operates in a highly regulated domain (electronic signatures, eIDAS/ESIGN Act). Key scope limitation and strict authorization policies are explicitly noted as important to prevent unauthorized legally binding commitments.
As an MCP server, this agent can be integrated into broader multi-agent ecosystems, where a compromised orchestrator agent could abuse this tool to automatically execute unauthorized contracts.
MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).