Show HN: Async – Claude code and Linear and GitHub PRs in one opinionated tool

Summary

An open-source developer tool that combines AI coding with task management and code review. Async integrates Claude Code + Linear + GitHub PRs into one opinionated workflow. async-demo.mp4 https://www.async.build/ What Async Does Automatically researches coding tasks - analyzes your codebase and asks clarifying questions before execution - analyzes your codebase and asks clarifying questions before execution Executes code changes in the cloud - runs in isolated environments without touching your local setup - runs in isolated environments without touching your local setup Breaks work into reviewable subtasks - creates stack diffs for easier code review - creates stack diffs for easier code review Handles the full workflow - from GitHub issue to merged PR without leaving the app Why Async? Traditional AI coding tools work great for new projects but struggle with mature codebases where you can't break things. Async solves the common problems: Forces upfront planning - always asks clarifying questions and requires confirmation before executing - always asks clarifying questions and requires confirmation before executing Eliminates context switching - executes asynchronously in the cloud while you work on other tasks - executes asynchronously in the cloud while you work on other tasks Simple task tracking - automatically imports GitHub issues, no PM tool bloat - automatically imports GitHub issues, no PM tool bloat Built-in code review - comment and iterate on stacked diffs without leaving the app How It Works Onboarding & Task Creation: Install the Async GitHub App and select repositories. Async automatically imports open GitHub issues as tasks. Research Phase: New tasks trigger a Google Cloud Run job that clones your repository and runs a research agent. The agent analyzes the codebase and generates clarifying questions. Tasks either auto-execute or wait for your input. Execution: Another isolated GCR job handles execution using Claude Code. Creates feature branch → b...