IntentOptions

CORE · interface · Type contract

Demand-facing hints attached to one Tool; no independent identity is created.

Import

TypeScript

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

JavaScript

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

Other public entry points:@jangts/agent-core, @jangts/agent-core/types, @jangts/agent-core/structs.

Definition

interface IntentOptions<Context>

Type parameters

Type parameter	Constraint	Default type
Context	—	—

Field structure

Field	Type	Required	Description
description	string | undefined	Optional	Read-only. Optional demand-facing description; otherwise the tool description is reused.
when	((context: ToolContext<Context>) => boolean) | undefined	Optional	Read-only. Synchronous participation predicate.
delegates	readonly string[] | undefined	Optional	Read-only. Allowed continuation delegates, not an execution sequence.

Examples

• Model tools and transports: typed selection only after full validation: A tool definition provides a Schema and resolver; a transport translates wire output into the unified model selection contract.
• Real tool invocation and in-request runtime: Core registers and executes real tools and returns receipts carrying an invocation; business authorization is owned by the implementation registered by the App.
• Tool best practice: one definition generates the model tool and execution runtime: Register Schema, authorization, execution, and output validation once, and bind the App per request instead of maintaining two tool lists.
• Decorators: complete handlers and existing host methods: Classes construct definitions automatically; methods bind the real host. Outputs still use original define, constructor and bind contracts.

Declare two selectable tools

Beginner · Node.js

TypeScript

import { ModelToolRegistry } from '@jangts/agent-core';
const inputSchema = { jsonSchema: { type: 'object', properties: {}, additionalProperties: false },
  parse(value: unknown) {
    if (!value || typeof value !== 'object' || Array.isArray(value) || Object.keys(value).length) throw new Error('需要空对象');
    return {};
  } };
const tools = new ModelToolRegistry([
  { id: 'greet', description: '回答问候', inputSchema, resolve: () => 'greet' },
  { id: 'status', description: '查询状态', inputSchema, resolve: () => 'status' },
]).seal();
console.log(tools.resolve({ toolId: 'status', input: {} }, { stageId: 'recognize' }));

JavaScript

import { ModelToolRegistry } from '@jangts/agent-core';
const inputSchema = { jsonSchema: { type: 'object', properties: {}, additionalProperties: false },
    parse(value) {
        if (!value || typeof value !== 'object' || Array.isArray(value) || Object.keys(value).length)
            throw new Error('需要空对象');
        return {};
    } };
const tools = new ModelToolRegistry([
    { id: 'greet', description: '回答问候', inputSchema, resolve: () => 'greet' },
    { id: 'status', description: '查询状态', inputSchema, resolve: () => 'status' },
]).seal();
console.log(tools.resolve({ toolId: 'status', input: {} }, { stageId: 'recognize' }));

Project an allowed subset to only one stage

Configuration · Node.js

TypeScript

import { ModelToolRegistry, Support } from '@jangts/agent-core';
const schema = Support.defineSchema({ jsonSchema: { type: 'object', properties: {} },
  parse(value: unknown) { if (!value || typeof value !== 'object' || Array.isArray(value)) throw new TypeError('需要对象'); return {}; } });
const registry = new ModelToolRegistry([
  { id: 'greet', description: '问候', inputSchema: schema, resolve: () => 'greet' },
  { id: 'status', description: '状态', inputSchema: schema, resolve: () => 'status' },
]).seal();
const readOnly = registry.select(['status']);
const transport = Support.createModelTransport({ id: 'recognize', tools: readOnly });
console.log(transport.id, readOnly.ids());

JavaScript

import { ModelToolRegistry, Support } from '@jangts/agent-core';
const schema = Support.defineSchema({ jsonSchema: { type: 'object', properties: {} },
    parse(value) { if (!value || typeof value !== 'object' || Array.isArray(value))
        throw new TypeError('需要对象'); return {}; } });
const registry = new ModelToolRegistry([
    { id: 'greet', description: '问候', inputSchema: schema, resolve: () => 'greet' },
    { id: 'status', description: '状态', inputSchema: schema, resolve: () => 'status' },
]).seal();
const readOnly = registry.select(['status']);
const transport = Support.createModelTransport({ id: 'recognize', tools: readOnly });
console.log(transport.id, readOnly.ids());

Related policy source

• Check order for tool input, execution, output, and late results
• Authorization and model tool projection come from the same definition

Related definitions

• ToolContext