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What is Fragua

The forge, in one read — what Fragua does and how a build flows.

Fragua is Spanish for forge — the place where raw material becomes a finished tool under heat and pressure. It takes a Rails project from a one-line idea to a shipped pull request, running you through research, planning, spec-driven development, and execution.

What it sells isn't an AI that writes code. It's durable context and a disciplined workflow. Each phase produces structured artifacts that become context for the next agent — so by the time the execution agent runs, it already has the research, the plan, the technical guide, and the spec, loaded from your workspace rather than regenerated.

Optional planning
Product Brief Research MVP Plan Brand Guide Technical Guide
feeds context into
Required to build
Foundation Spec / Issue Execution PR

Only Foundation and an accepted Spec are required — the planning documents above are optional context. Everything a phase produces persists in the workspace, so no context evaporates between sessions.

Everything for one project lives in a single Workspace — research, plans, specs, agent runs, and the source Fragua builds. The execution agent works on a feature branch and opens a pull request; you review and merge, the same gate as any other change.

Ready to put it to work?

Install the CLI and run your first agent on your own machine.

Open the quick start