r/typescript

11h ago

u/Professional-Pear351

I wanted to build an agent system in typescript because most of them were in python

github.com Self-hosted AI coding agent platform for GitLab, built with LangGraph. Reviews merge requests, resolves issues autonomously, and chats with full project context. - vrajpal-jhala/langgraph-harness

Open

It's a GitLab review agent that reviews merge requests and resolves issues. I'm most comfortable in TypeScript and wanted to learn LangGraph.js properly, so I built it there. The closest thing I found to a production example was Deep Agents, but that's a library for building agents, and the full systems I saw, like Open SWE, are Python.

It's GitLab-only for now. I've started working on GitHub support.

It's been running in production for a few months, 1,300+ reviews so far. It's a webhook driven review with a BullMQ queue, a LangGraph.js agent using GitLab tools over MCP, with postgres checkpoints for recovery, and there's a React admin UI where I can watch runs live.…