ReplyPreviewStage

SUPPORT · interface · Type contract

Stage declaration: which tools it exposes and whether it previews text or arguments.

Import

TypeScript

import type { ReplyPreviewStage } from '@jangts/agent-core/support';

JavaScript

/** @typedef {import('@jangts/agent-core/support').ReplyPreviewStage} ReplyPreviewStage */

Other public entry points:@jangts/agent-core/support, @jangts/agent-core/support/model.

Definition

interface ReplyPreviewStage

Field structure

Field	Type	Required	Description
id	string	Required	Read-only. Stage ID used by the workflow and transport projection.
toolIds	readonly string[] | undefined	Optional	Read-only. Capabilities exposed at this stage; must be unique and registered.
preview	"tools" | "text" | undefined	Optional	Read-only. text previews plain model text; tools previews opted-in capability arguments.

Examples

• Generate preview rules from tool and stage declarations: Reuse the actual Schema and stage references to generate rules only for tools that are explicitly allowed to be displayed.

Explicitly mark a text-only stage

Beginner · Node.js

TypeScript

import { Support } from '@jangts/agent-core';
const rules = Support.createReplyPreviewRules({ stages: [{ id: 'reply', preview: 'text' }], tools: [] });
const preview = Support.createReplyPreview({ rules, sink: bubbles => { console.log(bubbles); } });
console.log(typeof preview);

JavaScript

import { Support } from '@jangts/agent-core';
const rules = Support.createReplyPreviewRules({ stages: [{ id: 'reply', preview: 'text' }], tools: [] });
const preview = Support.createReplyPreview({ rules, sink: bubbles => { console.log(bubbles); } });
console.log(typeof preview);

Reuse the Schema and stage references of structured tools

Configuration · Node.js

A real App should project these two arrays from the tools and stage declarations it has already registered; this example uses minimal static data to show the required fields.

TypeScript

import { Support } from '@jangts/agent-core';
const tools = [{ id: 'reply', jsonSchema: { type: 'object', properties: { answer: { type: 'string' } } },
  preview: { paths: [['answer']] } }];
const rules = Support.createReplyPreviewRules({
  stages: [{ id: 'respond', toolIds: ['reply'], preview: 'tools' }], tools,
});
const preview = Support.createReplyPreview({ rules, sink: bubbles => { console.log(bubbles); } });
console.log(rules, typeof preview);

JavaScript

import { Support } from '@jangts/agent-core';
const tools = [{ id: 'reply', jsonSchema: { type: 'object', properties: { answer: { type: 'string' } } },
        preview: { paths: [['answer']] } }];
const rules = Support.createReplyPreviewRules({
    stages: [{ id: 'respond', toolIds: ['reply'], preview: 'tools' }], tools,
});
const preview = Support.createReplyPreview({ rules, sink: bubbles => { console.log(bubbles); } });
console.log(rules, typeof preview);

Related policy source

• Schema field verification and explicit preview scope