OpenSpec

Founded by Tabish Bidiwale in 2025

Plan mode for complex features

Cost

Demo

Rating

★ People love it

Time to value

Quick Setup (< 1 hour)

You can use OpenSpec to create structured specifications for coding projects that work with AI coding agents. It stores requirements alongside your code, generates change proposals before implementation, and maintains living documentation. The specs help agents understand your system requirements and provide context that persists across chat sessions. You can review implementation plans as spec deltas, break down features into tasks, and keep functional requirements updated as your codebase evolves.

What OpenSpec does

Write structured specifications for new featuresGenerate change proposals with implementation tasksReview spec deltas before code implementationDocument system requirements and scenariosCreate technical design decisions documentationOrganize specifications by system capabilitiesMaintain context for AI coding agentsCollaborate on specs through version controlGenerates spec deltas showing requirement changesCreates implementation proposals with breakdown tasksStores specifications directly in your codebaseWorks with multiple AI coding agentsProvides persistent context across chat sessionsReviews intent before code implementationOrganizes specs by system capabilitiesNo API keys or external dependencies required