Protocols

Model Context Protocol

• MCP specification - authoritative protocol specification for MCP.
• MCP introduction - official overview and getting started material.
• MCP GitHub organization - reference repositories and SDKs.

MCP is tracked in this project as the primary agent-to-tool and agent-to-resource protocol.

Agent2Agent Protocol

• A2A Protocol - official A2A documentation home.
• A2A Specification - current protocol specification.
• A2A Agent Discovery - Agent Card discovery strategies, security notes, and caching guidance.
• A2A and MCP - official explanation of how A2A and MCP complement each other.
• A2A GitHub repository - protocol repository and specification material.
• Google A2A announcement - original public announcement and motivation.

A2A is tracked in this project as the primary agent-to-agent discovery, capability exchange, and task delegation protocol.

Related Web Protocols

• OpenAPI Specification - Machine-readable API contract format commonly consumed by tools, gateways, and agents.
• OpenID Connect Core - Identity protocol layered on OAuth2 for authentication and ID tokens.
• OAuth 2.0 Authorization Framework - Authorization framework for delegated, scoped access to protected resources.