OpenSpec
openspec.devA lightweight spec-driven framework for coding agents and CLIs
Dev Toolsspec-drivencoding-agentscliopen-sourcedeveloper-frameworkrequirementscode-review
About
OpenSpec is a lightweight, spec-driven framework designed for coding agents and CLIs that requires no API keys or MCP setup. It generates spec deltas with each change, capturing requirement modifications so developers and reviewers can quickly understand what changed at a high level without digging through code. The project is open source and aims to be universal across different tooling ecosystems.
Problem
Developers and code reviewers struggle to quickly understand how system requirements change across code modifications without reading through all the code.
For
software developers and engineering teams using coding agents or CLIs
How it works
Each change produces a spec delta that captures the difference in system requirements, giving developers and reviewers a structured, human-readable summary of what changed.
Business model
open-source
Status
launched