@devus/dak-core

DAK — Devus Agent Kit

A unified, vendor-agnostic AI agent framework combining the developer experience of Genkit with the orchestration power of LangGraph—built for production from day one.

Features

• 🔌 Vendor Agnostic — Unified API across Gemini, OpenAI, Anthropic, Ollama
• 🧩 Plugin Architecture — Extensible model providers, vector stores, state backends
• 🔁 Stateful Orchestration — Checkpoints, time-travel debugging, resumable workflows
• 🛠️ Tool Registry — JSON Schema tools with parallel execution
• 📊 Observability — Built-in tracing, token usage, cost attribution
• 🐍 TypeScript & Python — First-class support for both runtimes

Quickstart

npm install @devus/dak-core

import { DAK, GeminiProvider } from '@devus/dak-core';

const dak = new DAK({
  providers: [{
    provider: new GeminiProvider(),
    config: { apiKey: process.env.GOOGLE_API_KEY }
  }]
});

// Quick generation
const result = await dak.generate(
  'google/gemini-2.0-flash',
  'Explain quantum computing in simple terms'
);

console.log(result.text);

Flows

const flow = dak.createFlow('research')
  .generate({
    name: 'draft',
    modelId: 'google/gemini-2.0-flash',
    prompt: 'Write about AI agents.',
    outputKey: 'draft',
  })
  .checkpoint('after-draft')
  .generate({
    name: 'refine',
    modelId: 'google/gemini-2.0-flash',
    prompt: (state) => `Improve this: ${state.draft}`,
    outputKey: 'final',
  });

const result = await flow.run('thread-1');
console.log(result.state.final);

Architecture

┌─────────────────────────────────────────┐
│            Your Application              │
└────────────────┬────────────────────────┘
                 │
        ┌────────▼────────┐
        │    DAK SDK       │
        └────────┬────────┘
     ┌───────────┼───────────┐
     │           │           │
┌────▼────┐ ┌───▼──┐ ┌─────▼─────┐
│ Model   │ │ Tool │ │  State    │
│ Registry│ │ Reg. │ │  Manager  │
└────┬────┘ └──────┘ └─────┬─────┘
     │                     │
┌────▼─────────────────────▼──────┐
│        Plugin System             │
│ Gemini · OpenAI · Supabase · …  │
└──────────────────────────────────┘

Documentation

Full documentation: https://devus.space/docs/agentkit

License

MIT © devus.space