3.7 KiB
3.7 KiB
系统提示词组装
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system-prompt 包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 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。
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。
/** 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」。
/** 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。
/** 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。
/**
* 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)
}