A2A Agent Security
AegisGate enforces security for Agent-to-Agent (A2A) communication, protecting multi-agent systems from adversarial manipulation.
Threat Landscape
A2A protocols enable AI agents to communicate and delegate tasks, creating unique attack surfaces:
- Agent impersonation: Unauthorized agents injecting into multi-agent workflows
- Task manipulation: Adversarial task descriptions that redirect agent behavior
- Context poisoning: Malicious context propagation across agent chains
- Privilege escalation: Agents accessing resources beyond their authorization scope
AegisGate Enforcement
| Layer | Protection | Detection Rate |
|---|---|---|
| Agent authentication | Identity verification, capability tokens | Full chain |
| Task screening | Prompt injection in task descriptions | 100% (adversarial suite) |
| Context validation | Cross-agent context integrity checks | 83.1% coverage |
| Rate limiting | Per-agent, per-task-type | Configurable |
| Audit logging | Full A2A message recording | ATLAS-mapped |
Configuration
a2a:
enabled: true
authentication:
require_capability_tokens: true
verify_agent_identity: true
screening:
task_injection: block
context_poisoning: block
guardrails:
max_agent_chain_depth: 5
require_human_approval: [financial, pii_access]
For guardrail technical specifications, see A2A Guardrails.