83 lines
3.7 KiB
Markdown
83 lines
3.7 KiB
Markdown
# 系统提示词组装
|
||
|
||
[English](system-prompt.md) | 中文
|
||
|
||
[system-prompt 包](../../packages/core/system-prompt)负责管理提示词贡献者与一次组装调用之间交换的数据。该包的 [README](../../packages/core/system-prompt/README.md) 记录了注册、排序、作用域与渲染行为；本页固定各插件实现或传递的跨包字面形状。
|
||
|
||
源码：[`packages/core/system-prompt/src/index.ts`](../../packages/core/system-prompt/src/index.ts)。
|
||
|
||
## 组装上下文
|
||
|
||
`AssembleContext` 标识一次组装所解析的作用域层，并可携带该请求的显式控制信号。它可合并扩展：`dsh-agent` 添加可选字段 `agent`，用于携带当前的 agent（智能体）实例；`assembleContextFor(agent, signal)` 则一起设置这些显式字段。裸组装既没有作用域，也没有信号。
|
||
|
||
```ts type-equiv
|
||
/** Merge-extensible context for one prompt assembly. */
|
||
interface AssembleContext {
|
||
/**
|
||
* Scope whose providers and waterfall listeners participate. When absent,
|
||
* only global providers and subject-less listeners participate.
|
||
*/
|
||
scope?: ScopeKey
|
||
/** Explicit control signal for the turn that requested this assembly, when any. */
|
||
signal?: AbortSignal
|
||
}
|
||
```
|
||
|
||
## 工具提供方结果
|
||
|
||
`ToolProviderResult.schemas` 是当前组装中对模型可见的工具 schema 集合。`knownNames` 是提供方在限制前的名称全集，用于区分「配置名拼写错误」与「已知工具在此作用域中被有意隐藏」。
|
||
|
||
```ts type-equiv
|
||
/** Tool schemas visible in one assembly and their pre-restriction name set. */
|
||
interface ToolProviderResult {
|
||
/** The schemas this provider contributes to THIS assembly. */
|
||
readonly schemas: readonly ToolSchema[]
|
||
/** The pre-restriction name universe for config validation (defaults to `schemas`' names). */
|
||
readonly knownNames?: readonly string[]
|
||
}
|
||
```
|
||
|
||
## 提示词段落
|
||
|
||
`PromptSection` 是一份只读的同进程注册契约。其文本可以是静态的，也可以从当前组装上下文动态解析。
|
||
|
||
```ts type-equiv
|
||
/** One contributed section of the system prompt (registry input). */
|
||
interface PromptSection {
|
||
/** Unique name — a duplicate registration throws (see {@link SystemPrompt.section}). */
|
||
readonly name: string
|
||
/**
|
||
* Sections are concatenated in ascending order. Convention: `-100` is the
|
||
* harness identity, `0` the deployment persona, tool guidance uses 100–199;
|
||
* other negative orders also render before the persona.
|
||
*/
|
||
readonly order: number
|
||
/**
|
||
* Static text or a provider evaluated at each assembly with that assembly's
|
||
* {@link AssembleContext}. The text may reference `{{variable}}`s — they are
|
||
* interpolated later, by {@link renderPrompt}.
|
||
*/
|
||
readonly text: string | ((context: AssembleContext) => string)
|
||
}
|
||
```
|
||
|
||
## 动态提示词上下文
|
||
|
||
`PromptContext` 是与 `PromptSection` 对应的缓存安全结构。组装会解析这些贡献并排序；agent loop（智能体循环）仅在完整当前快照发生变化或被压缩（compaction）移除时，才会将其记录在保留的模型历史之后。
|
||
|
||
```ts type-equiv
|
||
/**
|
||
* One dynamic model-context contribution. Unlike a {@link PromptSection}, its
|
||
* rendered text is materialized as a durable user-role snapshot at the request
|
||
* tail, so changing runtime state preserves the stable system/history prefix.
|
||
*/
|
||
interface PromptContext {
|
||
/** Unique name — a duplicate registration throws (see {@link SystemPrompt.context}). */
|
||
readonly name: string
|
||
/** Contexts are joined in ascending order, independently of system-section order. */
|
||
readonly order: number
|
||
/** Static text or a provider evaluated for each assembly. Empty text contributes nothing. */
|
||
readonly text: string | ((context: AssembleContext) => string)
|
||
}
|
||
```
|