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a2a-authentication

Implement and configure authentication schemes for agent-to-agent communication.

35|16|Updated Mar 4, 2026
Search Tags:#security#authentication#mtls#oauth2#openid connect#a2a
One-click install
npx skills add https://github.com/OrcaQubits/agentic-commerce-claude-plugins --skill a2a-authentication
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: a2a-authentication
Source: https://github.com/OrcaQubits/agentic-commerce-claude-plugins/tree/main/a2a-multi-agent/skills/a2a-authentication
Command: npx skills add https://github.com/OrcaQubits/agentic-commerce-claude-plugins --skill a2a-authentication

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill addresses the critical need for secure communication between AI agents by implementing robust authentication mechanisms, ensuring that only verified and authorized agents can interact.

Core Features & Use Cases

  • Multi-Scheme Support: Implements API keys, Bearer tokens, OAuth 2.0, OpenID Connect, and mutual TLS for flexible security configurations.
  • Agent Card Integration: Facilitates the declaration of security requirements within Agent Cards for clear communication of authentication needs.
  • Use Case: Securely connect a customer service agent to a backend order processing agent using OAuth 2.0 client credentials, ensuring that only authorized service agents can access and modify order data.

Quick Start

Configure A2A authentication for your agent using OAuth 2.0 client credentials by referencing the provided specification.

Frequently Asked Questions about a2a-authentication

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I secure agent-to-agent communication with OAuth 2.0?▼

You can secure agent-to-agent communication by implementing OAuth 2.0 client credentials to ensure only authorized agents interact and access protected data.

What is mutual TLS for AI agents?▼

Mutual TLS is an authentication scheme that secures agent-to-agent communication by requiring both participating agents to present and verify cryptographic certificates.

How do I declare security requirements in an Agent Card?▼

Agent Card integration facilitates declaring security requirements directly within the card, providing clear communication of authentication needs for interacting agents.

Can I use API keys and Bearer tokens for A2A authentication?▼

Yes, the authentication framework supports multi-scheme configurations including API keys and Bearer tokens for flexible security setups in agent-to-agent communication.

How do dynamic authentication challenges work for agent tasks?▼

Dynamic authentication challenges operate via auth-required task states, prompting interacting agents to provide valid credentials before a requested task can proceed.

Does this support OpenID Connect for verifying agent identities?▼

Yes, OpenID Connect is supported as an authentication scheme to verify agent identities, ensuring only verified participants can establish secure agent-to-agent communication.

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