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Documentation packages your AI coder won't drift from.

SpecStep turns a software idea into a complete, AI-consumable spec — vision, requirements, architecture, ADRs, phase plan, traceability, and a session protocol. Hand it to Claude Code, Cursor, or Copilot and ship without re-deriving context every chat.

Why SpecStep

Six specialized agents

Interviewer → Recommender → Architect → Designer Critic → Critic → Drafter. A cross-provider fresh-eyes review (Anthropic generates, OpenAI reviews) catches what same-model groupthink misses.

Anti-drift by design

Every requirement carries an ID. Every decision an ADR. Every phase a gate. Your AI coder reads the package, enforces it, and triggers specstep update when reality changes — not silently diverging.

Three surfaces, one engine

Web UI, REST API, and MCP server — same backend. Use SpecStep from a browser, wire it into a build pipeline, or call it from another agent. Bring your own LLM keys; the recommendation rubric stays tech-agnostic.