AgentTrust — Identity & Trust for A2A Agents

Overview

AgentTrust is an MCP server that provides agent identity management, agent-to-agent (A2A) communication, human-in-the-loop (HITL) escalation, and prompt injection detection. It enables developers to enforce trust boundaries and security in multi-agent workflows by standardizing identity and escalation protocols.

Best for

Best for
Developers building multi-agent systems that need built-in identity, escalation, or prompt injection defenses

Use cases

• Securing communication between autonomous agents in a multi-agent system
• Integrating human oversight into agent decision pipelines via HITL escalation
• Detecting and mitigating prompt injection attacks in agent interactions

Notes

AgentTrust is an MCP server that provides agent identity management, agent-to-agent (A2A) communication, human-in-the-loop (HITL) escalation, and prompt injection detection. It enables developers to enforce trust boundaries and security in multi-agent workflows by standardizing identity and escalation protocols.

1 stars on GitHub. Last updated 2026-04-09. Licensed MIT.

Use cases

• Securing communication between autonomous agents in a multi-agent system
• Integrating human oversight into agent decision pipelines via HITL escalation
• Detecting and mitigating prompt injection attacks in agent interactions

Pros

• Covers critical security needs: agent identity, HITL, and prompt injection detection in one package
• Leverages the MCP standard for easy integration with compatible agent frameworks
• Open source with a focused feature set for trust in A2A communication

Cons

• Very early stage with only 1 star, indicating minimal community adoption and validation
• Documentation and examples may be limited due to newness
• Requires understanding of MCP protocol and agent infrastructure to set up

Indexed from mcp-official-registry and enriched against its public facts.