AgentIndex icon
AgentIndex
keryx logo
keryx
★ 36
vs
adk-js logo
adk-js
★ 1.4k

keryx vs adk-js

keryx: Keryx is a fullstack TypeScript framework built on Bun, designed to write application logic once and deploy it across various transports, including HTTP, WebSocket, CLI, background tasks, and MCP (Model Context Protocol) for AI agents. It automatically exposes all actions as MCP tools, allowing AI agents to authenticate and interact with your application's validated endpoints with type safety.; adk-js: The Agent Development Kit (ADK) for TypeScript is an open-source, code-first toolkit designed for building, evaluating, and deploying sophisticated AI agents. It offers fine-grained control and flexibility, enabling developers to define agent behavior, orchestration, and tool use directly in TypeScript code for robust debugging, versioning, and deployment.

01

TL;DR

keryx logo
keryxMulti-Agent · ★ 36

Developing full-stack web applications where backend logic needs to serve various client types (web, mobile, CLI, AI agents).

Read keryx full review →
adk-js logo
adk-jsMulti-Agent · ★ 1.4k

Building, evaluating, and deploying sophisticated AI agents

Read adk-js full review →
02

Side-by-Side Comparison

Field
keryx logokeryx
adk-js logoadk-js
Category
Multi-Agent
Multi-Agent
Stars
★ 36
★ 1.4k
License
MIT
Apache-2.0
Install Command
bunx keryx new my-app && cd my-app && cp .env.example .env && bun install && bun dev
npm install @google/adk
Updated
1d ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
TypeScript, Bun, Fullstack Framework
AI Agents, TypeScript, Toolkit
03

Features

keryx logokeryx
01MCP-native actions: Every action is automatically an MCP tool with OAuth 2.1 authentication, typed errors, and per-session isolation for AI agents.
02Transport-agnostic Actions: A single action class handles HTTP, WebSocket, CLI, background tasks, and MCP tool calls with unified validation and middleware.
03Zod input validation: Provides type-safe parameter validation with automatic error responses and OpenAPI generation.
04Built-in background tasks: Utilizes node-resque for background job processing with fan-out patterns for parallel execution.
05Strongly-typed frontend integration: Offers end-to-end type safety for API responses with a companion Vite + React frontend, no code generation needed.
06Streaming responses: Supports SSE, chunked binary, and cross-transport streaming behavior for real-time data flow.
adk-js logoadk-js
01Rich Tool Ecosystem with pre-built, custom, and OpenAPI tools
02Code-First Development for agent logic, tools, and orchestration
03Modular Multi-Agent Systems for scalable applications
04Built-in Development UI for testing, evaluation, and debugging agents
05Integration with A2A protocol for remote agent-to-agent communication
04

Use Cases

keryx logokeryx
↳Developing full-stack web applications where backend logic needs to serve various client types (web, mobile, CLI, AI agents).
↳Building APIs designed for AI agents that require robust authentication, type validation, and standardized protocol (MCP) interaction.
↳Creating microservices or backend systems that unify HTTP, WebSocket, and CLI interfaces under a single, consistent codebase.
↳Implementing complex data processing or long-running operations as background tasks with parallel processing capabilities.
adk-js logoadk-js
↳Building, evaluating, and deploying sophisticated AI agents
↳Creating AI agents tightly integrated with services in Google Cloud
↳Designing scalable applications by composing multiple specialized agents into flexible hierarchies
05

Best For

keryx logokeryx
—
adk-js logoadk-js
EssentialTrending
FAQ

FAQ

What is the difference between keryx and adk-js?
Both keryx and adk-js are in the Multi-Agent category. keryx has 36 stars, while adk-js has 1.4k stars.
Which is better, keryx or adk-js?
The best choice depends on your use case. Choose keryx if Developing full-stack web applications where backend logic needs to serve various client types (web, mobile, CLI, AI agents)., and adk-js if Building, evaluating, and deploying sophisticated AI agents.
Is keryx free or open source?
Yes, keryx is open source on GitHub (MIT).
Is adk-js free or open source?
Yes, adk-js is open source on GitHub (Apache-2.0).
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Related

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