https://specdd.ai/how-to/install-and-setup/Spec-driven development install and setup guides for installing the CLI, preparing Node.js, initializing projects, updating framework files, and verifying a correct setup.Hugoen-ushttps://specdd.ai/how-to/install-and-setup/how-to-install-the-specdd-cli/https://specdd.ai/how-to/install-and-setup/how-to-install-the-specdd-cli/Install the SpecDD CLI for spec-driven development with npm, Yarn, Linux Homebrew, or Docker, then verify the command is ready to initialize and update SpecDD projects.https://specdd.ai/how-to/install-and-setup/how-to-install-or-upgrade-node-js-22-for-specdd/https://specdd.ai/how-to/install-and-setup/how-to-install-or-upgrade-node-js-22-for-specdd/Install or upgrade Node.js 22 or newer for spec-driven development using major operating system package managers first, official installers for macOS and Windows, and nvm only as a fallback.https://specdd.ai/how-to/install-and-setup/how-to-initialize-specdd-in-a-new-project/https://specdd.ai/how-to/install-and-setup/how-to-initialize-specdd-in-a-new-project/Initialize spec-driven development in a new project with specdd init, review the generated bootstrap and agent files, add a root spec, and verify the setup.https://specdd.ai/how-to/install-and-setup/how-to-add-specdd-to-an-existing-project/https://specdd.ai/how-to/install-and-setup/how-to-add-specdd-to-an-existing-project/Add spec-driven development to an existing repository safely with specdd init, preserve existing agent files, configure project rules, and start with one local spec.https://specdd.ai/how-to/install-and-setup/how-to-update-your-specdd-framework-files/https://specdd.ai/how-to/install-and-setup/how-to-update-your-specdd-framework-files/Update SpecDD framework files for spec-driven development with specdd check-update and specdd update, review the bootstrap diff, and preserve project-local setup files.https://specdd.ai/how-to/install-and-setup/how-to-structure-a-specdd-project-layout/https://specdd.ai/how-to/install-and-setup/how-to-structure-a-specdd-project-layout/Structure a spec-driven development project with bootstrap files, agent entrypoints, a root spec, directory specs, and colocated same-basename .sdd files.https://specdd.ai/how-to/install-and-setup/how-to-verify-your-specdd-setup-is-correct/https://specdd.ai/how-to/install-and-setup/how-to-verify-your-specdd-setup-is-correct/Verify a spec-driven development setup by checking the CLI, bootstrap files, root spec naming, local gitignore, spec inspection, linting, and agent entrypoint wiring.https://specdd.ai/how-to/install-and-setup/how-to-uninstall-specdd-from-a-project/https://specdd.ai/how-to/install-and-setup/how-to-uninstall-specdd-from-a-project/Remove spec-driven development from a project by reviewing .sdd files, deleting bootstrap and agent setup files, cleaning project-local skills, and verifying the Git diff.https://specdd.ai/how-to/install-and-setup/how-to-upgrade-from-an-older-specdd-project-layout/https://specdd.ai/how-to/install-and-setup/how-to-upgrade-from-an-older-specdd-project-layout/Upgrade an older SpecDD project layout for spec-driven development to the current bootstrap, agent entrypoint, root spec, and local spec structure without losing project-specific rules.