Modo

AI IDE that writes specs before code — not just a Cursor clone

Modo is an open-source AI IDE built on the Void editor (a VS Code fork) that flips the script on how AI coding tools work. Instead of jumping straight to code generation, Modo forces a spec-first workflow: describe what you want, and the agent converts your prompt into structured requirements docs, design docs, and task breakdowns stored in a persistent `.modo/specs/` directory before writing a single line of code. The approach draws from the "vibe coding is bad actually" school of thought. Modo's steering files and agent hooks let developers set coding conventions, stack preferences, and project constraints that persist across sessions. Autopilot mode chains spec generation through implementation, while parallel chat lets you run multiple agent conversations simultaneously against the same codebase. Built by a solo developer and posted to Hacker News as a Show HN, Modo positions itself against Cursor, Windsurf, and Kiro. The bet: slowing down agents with structured planning up front produces fewer hallucinated architectures and rewrites. It's early — rough edges abound — but the spec-driven philosophy is increasingly mainstream as larger teams adopt AI coding tools.

Panel Reviews

The Builder

Developer Perspective

Ship

“Spec-driven development is exactly what enterprise AI coding needs. I've watched too many Cursor sessions generate 500 lines of code that ignored the actual architecture. Modo's persistence layer and steering files are the missing piece — this deserves a serious look.”

The Skeptic

Reality Check

Skip

“It's a solo project on a VS Code fork with 23 Hacker News points. Void itself is already a niche alternative — building a workflow tool on top of it means you're two layers of maintenance away from stability. The spec idea is sound but wait for something with a team behind it.”

The Futurist

Big Picture

Ship

“Documentation-first coding is how agents will scale. When you have 10 agents working on one codebase, human-readable specs become the shared source of truth — not the code itself. Modo is ahead of the curve on this even if it's rough today.”

The Creator

Content & Design

Ship

“As a non-developer using AI to build tools, having the AI generate a structured plan I can actually read and edit before it touches code is a game changer. Most AI IDEs treat me as a passenger. Modo treats me as a co-pilot.”