Spec-driven developmentthat fits you.

Spec-driven development is a way of building software where requirements and design are made explicit before implementation starts.

Instead of jumping straight from an idea to code, the work is shaped into a spec that captures what should be built, why it matters, and how it should behave. That gives developers and AI assistants clearer context, reduces guesswork, and leaves behind a useful record of the decisions that shaped the change.

No, not at all. OpalSpec was built to codify an existing tried and tested workflow: humans guiding AI to help create a plan, shape a design, and support implementation. What OpalSpec adds is consistency, repeatability, and a lasting record of that work — without turning it into a rigid process. It keeps the workflow flexible, while making it easier to reuse, share, and build on over time. If OpalSpec is not for you there are many other superb SDD solutions.

Because we believe specs are most useful as clear, change-focused records of intent, not as a second system that has to stay permanently synchronised with the codebase. OpalSpec keeps code as the executable source of truth, uses specs to guide change, and relies on maintained documentation to explain how the system works over time. That reduces overhead, avoids unnecessary AI reconciliation, and keeps the workflow flexible.

No - OpalSpec is designed to provide structure, not enforce rigid process.

It gives developers and teams a clearer way to move through requirements, design, implementation, and documentation, but it does not force every project down the same path. Some teams want more upfront definition, others prefer to clarify as they go. Some want task breakdowns, others want to move straight from design into implementation. OpalSpec is built to support those different workflows while still keeping the work clear and connected.

No - OpalSpec does not need to be used for every change.

It is most valuable when clarity matters: new features, meaningful changes, shared systems, AI-assisted implementation, or anything another contributor may need to understand later. For very small edits, quick fixes, or obvious changes, a full spec-driven flow may be unnecessary. OpalSpec is there when it adds value, not as a rule that has to wrap every single commit.

OpalSpec helps AI-assisted development by giving AI clear intent, structure, and context before implementation begins. That leads to better code, fewer wrong turns, and a reusable record that helps future AI sessions make better decisions too.

OpalSpec is agent-agnostic. It works with any AI coding assistant that can read project files and follow instructions, including tools like Codex, Claude Code, Cursor, Windsurf, and other agentic coding workflows.

No - OpalSpec is for individual developers as well as teams.

Teams benefit from the shared clarity and record of what was built, but solo developers get many of the same advantages. It helps you think through changes more clearly, gives AI better context to work from, and leaves behind useful documentation for your future self when you come back to the code later.

OpalSpec is built to make spec-driven development feel practical, flexible, and easy to adopt.

A lot of SDD workflows are either too heavy, too rigid, or too abstract for everyday development. They often assume a fixed process, a high level of ceremony, or a team willing to fully commit to a formal methodology before seeing value. OpalSpec takes a different approach. It keeps the benefits of spec-driven development - clarity, alignment, better context, and stronger handoffs - but delivers them in a way that feels lightweight and natural to use.