One collection for architecture and behavior
Keep C4 diagrams and Gherkin features together so product intent stays visible as the work evolves.
Next-generation specification-writing
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What Spec9 gives you
Structured, validated, readable
Spec9 helps teams capture specs in a consistent format that is easy to review and share.
Built for humans and AI agents
Cursor, Copilot, and Claude connect via MCP to the live collection while they implement.