# Handler

> Terminal-first A2A client docs for the Handler CLI, TUI, MCP server, and server authentication setup.

## Docs

- [Overview](https://handler.alduncanson.com/index.md): Handler is a terminal-first A2A client with a TUI, scriptable CLI, MCP bridge, and server configuration for production auth.
- [Quickstart](https://handler.alduncanson.com/quickstart.md): Install Handler, connect to an A2A server, send your first message, and save a server configuration.
- [TUI and web UI](https://handler.alduncanson.com/guides/tui.md): Use Handler's interactive terminal interface to connect to A2A servers, manage auth, inspect cards, and send messages.
- [Messages, tasks, and sessions](https://handler.alduncanson.com/guides/messages-tasks.md): Send messages, stream responses, manage tasks, and reuse saved conversation state from the Handler CLI.
- [Servers](https://handler.alduncanson.com/guides/servers.md): Configure global or repo-scoped A2A server definitions for Handler.
- [Authentication](https://handler.alduncanson.com/guides/authentication.md): Configure bearer, API key, mTLS, and OAuth2 client credentials authentication for Handler servers.
- [MCP server](https://handler.alduncanson.com/guides/mcp.md): Expose Handler's A2A capabilities through a local MCP server for Amp, Pi, and other MCP-compatible agent harnesses.
- [Documentation MCP](https://handler.alduncanson.com/guides/agent-docs-mcp.md): Use Handler's hosted documentation MCP server so agents can discover Handler commands and structured CLI workflows.
- [Enterprise A2A setup](https://handler.alduncanson.com/guides/enterprise-a2a.md): Configure Handler for OAuth-authenticated, gateway-fronted, and team-shared A2A services.
- [Local servers](https://handler.alduncanson.com/guides/local-servers.md): Run Handler's local webhook server for development, demos, and integration testing.
- [CLI reference](https://handler.alduncanson.com/reference/cli.md): Complete reference for Handler commands, global options, structured output, and machine-readable CLI metadata.

## Optional

- [GitHub](https://github.com/alDuncanson/handler)
- [A2A Protocol](https://a2a-protocol.org/latest/)