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feat(agent): Implement structured output using Zod schemas for Analyzer, Task Manager, and Web Search agents

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This commit is contained in:
Willie Zutz 2025-06-22 23:59:29 -06:00
parent a8eaadc6ed
commit b9d4a4e779
7 changed files with 205 additions and 173 deletions
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29
src/lib/agents/taskManagerAgent.ts
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@ -3,10 +3,19 @@ import { AIMessage } from '@langchain/core/messages';
import { PromptTemplate } from '@langchain/core/prompts';
import { Command } from '@langchain/langgraph';
import { EventEmitter } from 'events';
import { z } from 'zod';
import { taskBreakdownPrompt } from '../prompts/taskBreakdown';
import { AgentState } from './agentState';
import { setTemperature } from '../utils/modelUtils';
// Define Zod schema for structured task breakdown output
const TaskBreakdownSchema = z.object({
tasks: z.array(z.string()).describe('Array of specific, focused tasks broken down from the original query'),
reasoning: z.string().describe('Explanation of how and why the query was broken down into these tasks')
});
type TaskBreakdown = z.infer<typeof TaskBreakdownSchema>;
export class TaskManagerAgent {
private llm: BaseChatModel;
private emitter: EventEmitter;
@ -115,19 +124,19 @@ export class TaskManagerAgent {
query: state.query,
});
const taskBreakdownResult = await this.llm.invoke([prompt], {
// Use structured output for task breakdown
const structuredLlm = this.llm.withStructuredOutput(TaskBreakdownSchema, {
name: 'break_down_tasks',
});
const taskBreakdownResult = await structuredLlm.invoke([prompt], {
signal: this.signal,
});
// Parse the response to extract tasks
const responseContent = taskBreakdownResult.content as string;
console.log('Task breakdown response:', taskBreakdownResult);
console.log('Task breakdown response:', responseContent);
const taskLines = responseContent
.split('\n')
.filter((line) => line.trim().startsWith('TASK:'))
.map((line) => line.replace('TASK:', '').trim())
.filter((task) => task.length > 0);
// Extract tasks from structured response
const taskLines = taskBreakdownResult.tasks.filter((task) => task.trim().length > 0);
if (taskLines.length === 0) {
// Fallback: if no tasks found, use the original query
@ -137,6 +146,7 @@ export class TaskManagerAgent {
console.log(
`Task breakdown completed: ${taskLines.length} tasks identified`,
);
console.log('Reasoning:', taskBreakdownResult.reasoning);
taskLines.forEach((task, index) => {
console.log(`Task ${index + 1}: ${task}`);
});
@ -151,6 +161,7 @@ export class TaskManagerAgent {
query: state.query,
taskCount: taskLines.length,
tasks: taskLines,
reasoning: taskBreakdownResult.reasoning,
},
},
});