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a2a-scanner
by cisco-ai-defense
Security scanner for agent-to-agent interactions and A2A threat detection
Python
Updated Apr 16, 2026
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Overview
Scans agent-to-agent (A2A) deployments for security issues and malicious behaviors. It analyzes message flows, permissions, and payloads to flag suspicious patterns and vulnerable configurations specific to A2A protocols. The scanner includes heuristics for credential leakage, prompt injection, and unsafe delegation paths tailored to multi-agent environments. This aligns with the Defense in Depth Pattern for layered security.
The Value Proposition
As agents increasingly communicate and delegate work, security risks shift from single-agent misuse to agent-to-agent attack chains and privilege escalation. Detecting these risks early provides a signal for agent trust and helps build an agent track record that goes beyond accuracy metrics. This shift makes it important to consider the Inter-Agent Miscommunication failure mode and associated defenses. A2A evaluation supported by the Agent-to-Agent Protocol (A2A) helps operationalize these security findings you can act on.
Ideal For
Security engineers and platform teams validating A2A deployments and hunting agent interaction vulnerabilities before production. For teams validating A2A deployments, reference patterns like the Sub-Agent Delegation Pattern.
Applications
- Detecting prompt injection and credential leakage across agent-to-agent message flows
- Auditing delegation policies to find unsafe privilege escalation paths between agents
- Running pre-production security checks on multi-agent workflows to reduce agent failure modes
Topics
a2a-protocola2a-serveragent-securitysecurity-scanner
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agent-playground
Keywords
multi-agent trustA2A evaluationagent-to-agent evaluationagent security