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LeanSpec

Lightweight spec methodology for AI-powered development

Ship Faster

No heavyweight processes. No spec-first waterfall. Write specs as you code, capture decisions when they matter, ship when ready.

Context Economy

Specs fit in working memory—both human and AI. Under 300 lines. Read in 5-10 minutes. Clear enough to implement, concise enough to maintain.

AI-Native Design

Works seamlessly with Cursor, GitHub Copilot, Aider, and Claude Desktop (via MCP). AI agents can read, search, and implement from your specs—no manual context switching.

Start Simple, Scale Smart

Begin with just README.md and status tracking. Add structure only when needed. From solo dev to enterprise—grow with your team, not ahead of it.

Agile & Adaptive

Adapt specs as you learn. No rigid upfront planning. Capture emerging insights. Respond to change faster than traditional documentation workflows.

Rich Tooling Ecosystem

CLI for workflow automation. MCP server for AI agents. VS Code extension. GitHub Actions for CI/CD. Extensible and composable toolchain.