commandSchema

KIT · function · Runtime value

Build a JSON schema for one command id.

Prefer compiled schemas; retain the existing open-schema contract for dynamic host protocols. A protocol without fieldSchemas falls back to an open object that only pins the discriminator, which keeps legacy hosts working without weakening compiled ones.

Import

TypeScript

import { commandSchema } from '@jangts/agent-core/kits/interaction';

JavaScript

import { commandSchema } from '@jangts/agent-core/kits/interaction';

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

Definition

Call

commandSchema(id: string, protocol: ProtocolShape, discriminator?: string): Record<string, unknown>

Build a JSON schema for one command id.

Prefer compiled schemas; retain the existing open-schema contract for dynamic host protocols. A protocol without fieldSchemas falls back to an open object that only pins the discriminator, which keeps legacy hosts working without weakening compiled ones.

Parameter	Type	Passing	Description
id	string	Required	—
protocol	ProtocolShape	Required	—
discriminator	string	Optional	—

Fields of protocol

Field	Type	Required	Description
modelJsonSchema	Record<string, unknown> | undefined	Optional	Read-only. Optional schema for model output.
inputJsonSchema	Record<string, unknown> | undefined	Optional	Read-only. Optional schema for runtime input.
fieldSchemas	Record<string, unknown> | undefined	Optional	Read-only. Optional per-field schemas.
keys	(value: Record<string, unknown>) => string[]	Required	Selector values carried by value.

Returns: Record<string, unknown>.

Examples

• Interaction: declare commands and bind local handlers: The fields, purpose, selector, checks, and handler of a command come from one declaration; the model cannot add executable handlers.

First define one explanatory command and validate it

Beginner · Node.js

TypeScript

import { Interaction } from '@jangts/agent-core/kits/interaction';
const protocol = Interaction.define({
  commandField: 'type', commands: {
    reply: { category: 'presentation', description: '展示已确认说明', fields: { text: { required: true, jsonSchema: { type: 'string' } } },
      checks: [{ occur: value => typeof value.text !== 'string', error: 'text 必须是字符串' }] },
  },
});
console.log(protocol.receive({ type: 'reply', text: '普通对象也能实现接口。' }));
console.log(protocol.modelJsonSchema);

JavaScript

import { Interaction } from '@jangts/agent-core/kits/interaction';
const protocol = Interaction.define({
    commandField: 'type', commands: {
        reply: { category: 'presentation', description: '展示已确认说明', fields: { text: { required: true, jsonSchema: { type: 'string' } } },
            checks: [{ occur: value => typeof value.text !== 'string', error: 'text 必须是字符串' }] },
    },
});
console.log(protocol.receive({ type: 'reply', text: '普通对象也能实现接口。' }));
console.log(protocol.modelJsonSchema);

Keep the same protocol and add complete handler binding

Configuration · Node.js

TypeScript

import { Interaction } from '@jangts/agent-core/kits/interaction';
const protocol = Interaction.define({
  commandField: 'type', commands: {
    reply: { category: 'presentation', description: '展示已确认说明', fields: { text: { required: true, jsonSchema: { type: 'string' } } }, checks: [{ occur: value => typeof value.text !== 'string', error: 'text 必须是字符串' }] },
    unavailable: { category: 'receipt', description: '说明资料不可用', fields: {} },
  },
});
const dispatcher = Interaction.bind(protocol, {
  reply: value => '说明：' + String(value.text),
  unavailable: () => '资料暂不可用',
});
console.log(dispatcher.dispatch({ type: 'reply', text: '普通对象也能实现接口。' }, undefined));
console.log(dispatcher.catalog);

JavaScript

import { Interaction } from '@jangts/agent-core/kits/interaction';
const protocol = Interaction.define({
    commandField: 'type', commands: {
        reply: { category: 'presentation', description: '展示已确认说明', fields: { text: { required: true, jsonSchema: { type: 'string' } } }, checks: [{ occur: value => typeof value.text !== 'string', error: 'text 必须是字符串' }] },
        unavailable: { category: 'receipt', description: '说明资料不可用', fields: {} },
    },
});
const dispatcher = Interaction.bind(protocol, {
    reply: value => '说明：' + String(value.text),
    unavailable: () => '资料暂不可用',
});
console.log(dispatcher.dispatch({ type: 'reply', text: '普通对象也能实现接口。' }, undefined));
console.log(dispatcher.catalog);

Reuse the single-command and batch compilation entries directly

Extension · Node.js

When you use Interaction the selector is generated for you; when you use defineCommand yourself you may also supply discriminator explicitly. This example does not execute any tool.

TypeScript

import { defineCommand, compileCommands, commandSchema, CommandCatalog } from '@jangts/agent-core/kits/interaction';
const reply = defineCommand({ fields: { text: { required: true } }, checks: [{ occur: value => typeof value.text !== 'string', error: '需要文本' }] });
console.log(reply.parse({ text: '接口说明' }));
const compiled = compileCommands({ reply: { fields: { text: { required: true } } } });
const commands = new CommandCatalog(Object.entries(compiled));
console.log(commandSchema('reply', commands.require('reply')), commands.manifest());

JavaScript

import { defineCommand, compileCommands, commandSchema, CommandCatalog } from '@jangts/agent-core/kits/interaction';
const reply = defineCommand({ fields: { text: { required: true } }, checks: [{ occur: value => typeof value.text !== 'string', error: '需要文本' }] });
console.log(reply.parse({ text: '接口说明' }));
const compiled = compileCommands({ reply: { fields: { text: { required: true } } } });
const commands = new CommandCatalog(Object.entries(compiled));
console.log(commandSchema('reply', commands.require('reply')), commands.manifest());

Related policy source

• Fields, checks, and the model Schema
• Selectors and command receiving
• Bind local handlers by validated command

Related definitions

• ProtocolShape