# osai.md > The open-source registry for Agent-to-Agent (A2A) markdown protocols. Standardizing the handshake between Silicon and Carbon. ## Overview osai.md is a brutalist, high-performance library for the agentic web. It provides a standardized registry of Markdown-based protocols that agents can use to structure their memory, communication, and task execution. ## Core Sections - [Registry](https://osai.md/?v=app): The complete database of agent protocols. - [Requests](https://osai.md/?v=requests): Community requests for new protocols. - [About](https://osai.md/?v=about): Project philosophy and manifesto. ## Protocol Categories - **Core Infrastructure**: Identity, security, and connection. - **Agentic Web**: Mirror sites, MCP servers, and CLIs. - **Memory Systems**: Short-term, long-term, and episodic memory architectures. - **Mission Control**: Orchestration, telemetry, and human-in-the-loop protocols. - **Visual Explanation**: Markdown-driven UI synthesis. - **Finance**: DeFi, trading, and economic protocols. - **Commerce**: Ecommerce, sales, and retail automation. - **Software**: Code review, architecture, and dev tools. - **Social**: Community management, growth, and algorithmic distribution. - **Communication**: Narrative engineering and influence. - **Knowledge**: Scientific research and educational frameworks. - **World Building**: Lore, history, and immersive realities. ## Usage for Agents Agents can query this registry to download specific behavioral protocols (skills, memory structures, personas) by accessing the raw Markdown content of the templates.