Spec-Driven Development and Spec Kit aim to fix AI coding's context problem

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Developers using AI-assisted 'vibe coding' often hit a wall after the first few prompts, as agents lose context and quietly introduce inconsistencies into the codebase. Spec-Driven Development (SDD) addresses this by treating a structured specification — covering system behavior, constraints, and key decisions — as the primary maintained artifact, with code generated from it. GitHub's open-source Spec Kit toolkit, launched in September 2025, operationalizes SDD through a CLI and a series of slash commands compatible with agents like Copilot, Claude Code, Cursor, and Gemini. The workflow produces a chain of Markdown files — covering constitution, specification, clarification, and planning — that preserve context across sessions, contributors, and AI models. With over 130,000 GitHub stars and 270-plus contributors, Spec Kit has grown beyond its experimental origins into a broader ecosystem of integrations and community extensions.

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