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@jiesou/dsh-stream-rules

v0.1.7

Published

Inject rules when needed, without wasting context. DSH port of opencode-stream-rules.

Downloads

259

Readme

dsh-stream-rules

按需注入规则,不浪费上下文。

你可以为 agent 编写自定义的流式规则(streaming rules)。

规则只在模式匹配后作为一条 steering notice 注入,然后 agent 会从同一个位置重试。 这样你就能控制 agent 的行为边界,同时不浪费上下文。

由我的 jiesou/opencode-stream-rules 移植到 DSH。 与 oh-my-pi 的 "Time-traveling stream rules" 类似,但代码实现非常简单紧凑。

工作原理

当规则在某个工具调用(工具名 + 序列化后的参数)上 match 返回 true 时,该规则触发:

  • 默认 — 通过 agent.inject() 向 agent 注入一条 SYSTEM NOTICE steering 消息(DSH 的"非唤醒"机制,为下一次 pre-step 排队模型可见上下文)。agent 会从同一位置重试,此时它已经知道了这条规则。
  • reject: true — 拒绝第一次工具调用({ kind: 'deny' });之后的尝试会被放行。在不至于过度限制的前提下进行 steering,例如在容器内已经允许 pip install 通过时。

每条规则在每个会话(每个 agent)中最多触发一次,与原始版本的 notified 去重逻辑一致。

安装

从 npm 安装(预构建产物,推荐):

dsh plugin --profile <name> add @jiesou/dsh-stream-rules

或从 GitHub 安装(安装时会运行 prepare 构建):

dsh plugin --profile <name> add github:jiesou/dsh-stream-rules

或者在你 profile 的 cordis.patch.yml 中添加一行:

- id: stream-rules
  name: '@jiesou/dsh-stream-rules'

安装之后

你需要自己编写 .js 规则文件。在编辑之前,这个插件默认不会做任何事。

  1. 找到插件的路径:
$DSH_HOME/profiles/<name>/node_modules/@jiesou/dsh-stream-rules

$DSH_HOME 默认是 ~/.dsh

  1. 编写规则:
mv rules/rules.js.example rules/rules.local.js
  • _ 开头的文件会被跳过。
  • 可以用 config.rules 指向其他规则目录:
- id: stream-rules
  name: '@jiesou/dsh-stream-rules'
  config:
    rules: /path/to/your/rules
  • reject: true 的规则只在第一次工具调用时拒绝;之后 agent 重试会被放行。既做了引导又不过度限制(例如在容器里时允许 pip install)。

编写规则

// rules/rules.local.js
export default [
  {
    match: (v) =>
      v.includes('pip') &&
      v.includes('install') &&
      !v.includes('uv pip') &&
      !v.includes('uvx'),
    reject: true,
    prompt: 'Use `uvx` or `uv venv` + `uv pip` instead of `pip install` directly',
  },
  {
    match: (v) => v.includes('curl') && v.includes('api.github.com'),
    prompt: 'Prefer using `gh` cli over `curl https://api.github.com/...`. gh offers more requests limits.',
  },
  {
    match: (v) => v.includes('pdf'),
    prompt: 'Use the `markitdown` skill to read PDF files.',
  },
  // add your rules here
]

| 字段 | 必填 | 说明 | | -------- | ---- | ----------------------------------------------------------------- | | match | ✅ | (v: string) => boolean;每次工具调用都会被扁平化为字符串并匹配 | | prompt | ✅ | 用于 steering 的提示语 | | reject | | 若为 true,则先阻止第一次工具调用,而不仅仅是 steering |

实现说明

  • 单个 src/index.ts(约 60 行)。
  • 使用 DSH 的 tools/pre-execute waterfall(deny)和 agent.inject()(steering),这些都是官方文档记载的原生扩展点。没有改动核心,没有 monkey-patching。