Definition
An Agent Card is a structured, human-readable description of an AI agent.
It is designed to clearly document an agent’s identity, purpose, capabilities, and operational characteristics in a consistent format that can be referenced across systems, organizations, and discussions.
An Agent Card does not represent code, credentials, or certification.
It is a descriptive artifact, similar in spirit to documentation, specifications, or model cards.
Why Agent Cards Matter
As AI systems increasingly operate as autonomous or semi-autonomous agents, it becomes necessary to:
- Understand what an agent is designed to do
- Distinguish one agent from another
- Communicate capabilities and limitations clearly
- Support discovery, governance, and interoperability
Agent Cards provide a lightweight mechanism to address these needs without enforcing a specific technical implementation.
Typical Agent Card Elements
While formats may evolve, an Agent Card commonly includes:
- Agent Identity
Name, owner, or responsible entity - Purpose and Scope
What the agent is intended to do - Declared Capabilities
Actions, tasks, or services the agent can perform - Interfaces
APIs, endpoints, or access methods (if applicable) - Operational Constraints
Limits, assumptions, or boundaries - Policies and Usage Notes
Safety, compliance, or governance considerations
What an Agent Card Is Not
An Agent Card is not:
- A certification or approval
- A guarantee of performance or safety
- A ranking or competitive comparison
- A substitute for audits or technical validation
It is a documentation and communication tool, not an enforcement mechanism.
Relationship to Standards
Agent Cards are intended to complement, not replace, emerging standards, protocols, or governance frameworks.
They provide a shared descriptive layer that can support:
- Technical interoperability
- Policy discussions
- Organizational alignment
Summary
An Agent Card enables clear, structured communication about AI agents in a rapidly evolving ecosystem.
By documenting intent and characteristics transparently, Agent Cards help reduce ambiguity, support trust discussions, and enable more responsible coordination.