Open source · TypeScript
Best TypeScript agent infrastructure
The 10 open-source agent infrastructure written in TypeScript in this index, ranked by real maintained adoption (GitHub stars and recent commit activity), never by sponsorship. Langfuse leads the set at 35,141 GitHub stars, and 7 of the 10 have shipped a commit in the last 90 days. Every project here is TypeScript-first, self-hostable, and free to run; the trade-off is you host and maintain it yourself. Right now it's led by Langfuse (35k stars), with Composio and gateway close behind. Rankings shift as projects gain stars and ship commits.
LangfuseInfrastructureAn open-source LLM engineering platform for tracing, evaluation, prompt management and debugging.Open sourceTypeScript · MITVerified · Active 35kGitHub starsComposioInfrastructureSDKs that give AI agents 1,000+ pre-authenticated toolkits, per-user sessions, triggers and a sandbox.Open sourceTypeScript · MITVerified · Active 30kGitHub starsgatewayInfrastructureA blazing fast AI Gateway with integrated guardrails. Route to 1,600+ LLMs, 50+ AI Guardrails with 1 fast & friendly API.Open sourceTypeScript · MITVerified 13kGitHub starssteel-browserInfrastructureOpen Source Browser API for AI Agents & Apps. Steel Browser is a batteries-included browser sandbox that lets you automate the web without worrying about infrastructure.Open sourceTypeScript · Apache-2.0Verified · Active 7.7kGitHub starsHeliconeInfrastructureAn open-source AI gateway and LLM observability platform: routing, fallbacks, tracing and cost tracking.Open sourceTypeScript · Apache-2.0Verified · Active 6.2kGitHub starsbyterover-cliInfrastructureByteRover CLI (brv) - The portable memory layer for autonomous coding agents (formerly Cipher)Open sourceTypeScriptVerified 5.0kGitHub starsarchestraInfrastructureEnterprise AI Platform with guardrails, MCP registry, gateway & orchestratorOpen sourceTypeScriptVerified · Active 4.3kGitHub starsmetamcpInfrastructureMCP Aggregator, Orchestrator, Middleware, Gateway in one dockerOpen sourceTypeScript · MITVerified 2.7kGitHub starsmcp-routerInfrastructureA Unified MCP Server Management App (MCP Manager).Open sourceTypeScriptVerified · Active 2.1kGitHub starsai-devkitInfrastructureThe control plane for AI coding agents.Open sourceTypeScript · MITVerified · Active 1.6kGitHub stars
Frequently asked
- What are the best TypeScript agent infrastructure?
- By maintained adoption — GitHub stars plus recent commit activity — Langfuse, Composio and gateway lead the TypeScript agent infrastructure in this index of 10. The full ranking is below; it reflects what is genuinely used and still maintained, not what pays.
- Are these TypeScript agent infrastructure open source and free?
- Yes — every project on this page is open source and written primarily in TypeScript. MIT is the most common licence here, on 5 of 10, across 2 licences in total. The software is free to run and self-host; you still pay for the infrastructure you run it on and any model or API usage it makes.
- Why choose TypeScript agent infrastructure specifically?
- Staying in your team's primary language — TypeScript — makes self-hosting, extending, and debugging far easier, because you can read and modify the source directly instead of treating it as a black box. It also makes upstream activity something you can judge: 7 of these 10 shipped in the last 90 days, and reading a quiet project's source is how you tell finished from abandoned.