# Capability & Tooling

> how agents invoke tools and data

_3 of 28 · [all The Agent Protocol Atlas](/protocols)_

- [MCP](/protocols/capability/mcp) — The USB-C of agent tooling: a single JSON-RPC interface for connecting any agent to any tool, data source, or service.
- [WebMCP](/protocols/capability/webmcp) — MCP for the browser: a web page registers callable tools on document.modelContext so a visiting agent invokes functions instead of clicking pixels.
- [OASF](/protocols/capability/oasf) — A standardized schema for describing AI agents — their capabilities, metadata and relationships — so agents can be discovered and understood across platforms; the 'DNS for agents' within AGNTCY.