TypeScript and JavaScript AI agent frameworks (2026)

Agent frameworks and SDKs for TypeScript, JavaScript and Node.js developers. Here are all 10 from the AgentScout directory.

How we picked and ranked: tools are matched by category, the pricing each maker states and what each tool says it does. They are ranked by GitHub stars as recorded on each listing (link checks 2026-10-18); tools without a tracked repo follow, by listing maturity. No paid placements.

1. T

   1. Trigger.dev

   frameworksOpen source + cloud★ 16,558 GitHub stars

   Platform for building and deploying durable background AI agents and workflows in TypeScript.

   Pricing (as stated): Open source + cloud · Mature

2. V

   2. VoltAgent

   frameworksOpen source + cloud★ 10,819 GitHub stars

   TypeScript agent framework plus an engineering platform for building, observing and deploying AI agents.

   Pricing (as stated): Open source + cloud · Mature

3. S

   3. Strands Agents

   frameworksOpen source★ 8,841 GitHub stars

   Strands open-source SDK for building production agent harnesses in Python and TypeScript.

   Pricing (as stated): Open source · Mature

4. A

   4. Agent-Native (Builder.io)

   frameworksOpen source★ 7,262 GitHub stars

   Open-source TypeScript framework for building agents that come with their own app UI; each action is shared by the UI, agent, API, CLI, MCP and A2A.

   Pricing (as stated): Open-source framework; optional hosted building on Builder.io · Beta, launched Oct 14

5. O

   5. Open Multi-Agent

   frameworksOpen source★ 7,001 GitHub stars

   Self-hosted TypeScript agent runtime with durable approvals and verifiable run records.

   Pricing (as stated): Open source · Mature

6. G

   6. Genkit

   frameworksOpen source★ 6,525 GitHub stars

   Google's open-source framework for building agentic apps in JavaScript, Go, Dart and Python.

   Pricing (as stated): Open source · Mature

7. T

   7. TanStack AI

   frameworksOpen source★ 3,199 GitHub stars

   Type-safe, provider-agnostic TypeScript SDK for chat, tool calling and agents.

   Pricing (as stated): Open source · Active

8. A

   8. Ax

   frameworksOpen source★ 2,967 GitHub stars

   DSPy-style framework for building LLM programs and agents in TypeScript.

   Pricing (as stated): Open source · Active

9. V

   9. Vercel AI SDK

   frameworksOpen source

   TypeScript toolkit for building AI apps and agents.

   Pricing (as stated): Open source · Mature

10. M

    10. Mastra

    frameworksOpen source

    TypeScript framework for agents, workflows and RAG.

    Pricing (as stated): Open source · Active

FAQ

What are the best TypeScript AI agent frameworks?

Ranked by tracked GitHub stars, the top TypeScript AI agent frameworks in our directory are Trigger.dev, VoltAgent, Strands Agents, Agent-Native (Builder.io), Open Multi-Agent. Stars measure popularity, not fit, so compare a few against your own task.

How many TypeScript AI agent frameworks does AgentScout list?

10 tools match. This page shows the top 10. Pricing mix on this page: Open source (8), Open source + cloud (2).

How much do these tools cost?

Pricing is what each maker states on their site. Open-source tools are free to self-host but may need a paid model API key or offer paid cloud plans; freemium tools have a free plan with limits. Check each official site.

Where can I see every tool for building AI agents?

Our task page lists all 137 tools we match to building AI agents.

Related: All tools for building AI agents · Best AI Agent Frameworks · frameworks (10)

Similar searches: Open-source AI agent frameworks · Python AI agent frameworks · Multi-agent frameworks

By role: For AI engineers

All popular searches · AI agents by role · Free tools

Facts come from our directory listings; pricing is as each maker states it and can change. Check official sites before you choose.