The AI Harness Coding Agent

Weaving the Universe, Token by Token.

You can also embed Xiaoyu in your application, connecting models, tools, and workflows to build your own agent.

Install Xiaoyu

macOS / Linux / Windows

pip install "xiaoyu-agent[tui]"

$ xiaoyu

Welcome back!

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a harness coding agent

~/projects/hello

Getting started

Type a task and press Enter.

/help for commands · /exit to quit

Keep project instructions in AGENTS.md.

/model/tools/skills

›Describe your task to get started…

Startup preview · model already configured

Before your first launch, run to configure your model provider’s API key.

$解释一下 localhost、127.0.0.1 和 0.0.0.0 的区别

@c -- '解释一下 localhost、127.0.0.1 和 0.0.0.0 的区别'

↳ 转给 @x

小羽

localhost 是指向本机的主机名。

127.0.0.1 是 IPv4 回环地址，只能从本机访问。

0.0.0.0 用于监听所有本机 IPv4 网络接口。

本机开发通常用 localhost。需要让局域网内的设备访问时，
可监听 0.0.0.0，再通过这台电脑的局域网 IP 访问。

Terminal Q&A · Chinese input · zsh · illustrative response

Run , then open a new zsh terminal to ask questions directly in Chinese.

Terminal 1 · Server

$xiaoyu serve --workspace .

xiaoyu serve → http://127.0.0.1:8420

Terminal 2 · Send a request

$ XIAOYU_SESSION=$(curl -sS -X POST http://127.0.0.1:8420/session \
  -H 'Content-Type: application/json' -d '{}' | jq -r '.session_id')

$ curl -sS "http://127.0.0.1:8420/session/$XIAOYU_SESSION/prompt" \
  -H 'Content-Type: application/json' \
  -d '{"text":"Explain the difference between localhost, 127.0.0.1 and 0.0.0.0."}' \
  | jq '{status, text: .result.text}'

{
  "status": "idle",
  "text": "localhost is a hostname for this machine. 127.0.0.1 is the IPv4 loopback address. 0.0.0.0 binds a server to all local IPv4 interfaces."
}

HTTP API demo · illustrative response · output excerpt

Install . This example uses curl and jq with a model already configured. API reference

The AI Harness Coding Agent

Install Xiaoyu

Xiaoyu demos