https://specdd.ai/how-to/Practical spec-driven development how-to guides for adopting specification-driven development, writing local specs, and guiding humans and agents.Hugoen-ushttps://specdd.ai/how-to/set-up-your-agent/how-to-choose-between-a-dedicated-plugin-and-universal-agent-skills/https://specdd.ai/how-to/set-up-your-agent/how-to-choose-between-a-dedicated-plugin-and-universal-agent-skills/Choose the right spec-driven development agent setup path: a dedicated plugin for supported agents, universal Agent Skills for compatible clients, or file-aware fallback.https://specdd.ai/how-to/work-with-specdd-skills/how-to-choose-the-right-specdd-skill/https://specdd.ai/how-to/work-with-specdd-skills/how-to-choose-the-right-specdd-skill/Choose the right SpecDD skill for spec-driven development work: orientation, explanation, planning, authoring, implementation, review, tracing, testing, risk, debugging, refactoring, tasks, CLI, and adoption.https://specdd.ai/how-to/teams-and-process/how-to-explain-specdd-to-your-team/https://specdd.ai/how-to/teams-and-process/how-to-explain-specdd-to-your-team/Explain spec-driven development to your team as source-adjacent specs that preserve intent, boundaries, requirements, and completion criteria for humans and agents.https://specdd.ai/how-to/troubleshooting/how-to-fix-an-agent-that-ignores-your-specs/https://specdd.ai/how-to/troubleshooting/how-to-fix-an-agent-that-ignores-your-specs/Fix an agent that ignores SpecDD specs by checking bootstrap setup, agent entrypoint wiring, plugin or skills installation, working directory, content root, and prompt scope.https://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/editor-setup/how-to-install-the-vs-code-extension-for-sdd-files/https://specdd.ai/how-to/editor-setup/how-to-install-the-vs-code-extension-for-sdd-files/Install the SpecDD VS Code extension for .sdd files, including Visual Studio Marketplace, Open VSX, command-line install, and verification steps.https://specdd.ai/how-to/software-design-practices/how-to-maintain-the-single-responsibility-principle-with-specdd/https://specdd.ai/how-to/software-design-practices/how-to-maintain-the-single-responsibility-principle-with-specdd/Maintain the Single Responsibility Principle with spec-driven development by writing local specs that define one purpose, owned files, required behavior, and explicit non-goals.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-plan-a-specdd-adoption-for-an-existing-repo/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-plan-a-specdd-adoption-for-an-existing-repo/Plan spec-driven development adoption for an existing repository by choosing one high-value area, drafting reviewed specs, running one small change, and expanding gradually.https://specdd.ai/how-to/agent-workflows/how-to-prompt-an-agent-with-specdd/https://specdd.ai/how-to/agent-workflows/how-to-prompt-an-agent-with-specdd/Prompt an agent with spec-driven development by naming the spec, feature, task, or behavior while durable project context stays in local .sdd files.https://specdd.ai/how-to/refactoring-and-maintenance/how-to-refactor-with-specdd/https://specdd.ai/how-to/refactoring-and-maintenance/how-to-refactor-with-specdd/Refactor with spec-driven development by capturing current behavior in local specs, confirming authority, changing structure in small steps, and verifying behavior stayed the same.https://specdd.ai/how-to/code-review-and-governance/how-to-review-a-specdd-pull-request/https://specdd.ai/how-to/code-review-and-governance/how-to-review-a-specdd-pull-request/Review a spec-driven development pull request by checking changed files against write authority, behavior rules, Must not, Forbids, tasks, Done when, and verification.https://specdd.ai/how-to/spec-driven-workflows/how-to-run-the-spec-first-loop/https://specdd.ai/how-to/spec-driven-workflows/how-to-run-the-spec-first-loop/Run the SpecDD spec-first loop for spec-driven development by writing or updating the local spec, reviewing it, implementing a bounded task, checking the result, and keeping code and specs aligned.https://specdd.ai/how-to/getting-started/how-to-start-with-spec-driven-development/https://specdd.ai/how-to/getting-started/how-to-start-with-spec-driven-development/Learn how to start with spec-driven development by writing intent before implementation, keeping specs near the work, and reviewing changes against a local contract.https://specdd.ai/how-to/security-and-risk/how-to-use-specdd-to-limit-agent-risk/https://specdd.ai/how-to/security-and-risk/how-to-use-specdd-to-limit-agent-risk/Limit AI coding agent risk with spec-driven development by defining write authority, readable context, Must not rules, Forbids entries, review gates, and verification evidence.https://specdd.ai/how-to/testing-and-quality/how-to-use-specdd-with-tdd/https://specdd.ai/how-to/testing-and-quality/how-to-use-specdd-with-tdd/Use spec-driven development with TDD by reviewing the governing spec, deriving a failing test from it, implementing inside spec authority, and keeping specs and tests aligned.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-root-project-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-root-project-spec/Write a SpecDD root project spec for spec-driven development with the content-root name, project purpose, structure, top-level rules, and boundaries.https://specdd.ai/how-to/spec-writing-technique/how-to-write-good-specs/https://specdd.ai/how-to/spec-writing-technique/how-to-write-good-specs/Write good SpecDD specs for spec-driven development by keeping them local, specific, outcome-focused, constraint-oriented, and reviewable for humans and agents.https://specdd.ai/how-to/use-spec-sections/how-to-write-the-spec-section/https://specdd.ai/how-to/use-spec-sections/how-to-write-the-spec-section/Write the Spec section in a SpecDD .sdd file by naming the subject, placing it first, using an inline value, and keeping body text out of the section.https://specdd.ai/how-to/agent-workflows/how-to-make-an-agent-follow-specs/https://specdd.ai/how-to/agent-workflows/how-to-make-an-agent-follow-specs/Make an agent follow SpecDD specs in a spec-driven development workflow by verifying setup, opening the right root, explaining the target spec, planning under authority, and reviewing the diff.https://specdd.ai/how-to/work-with-specdd-skills/how-to-chain-specdd-skills-safely/https://specdd.ai/how-to/work-with-specdd-skills/how-to-chain-specdd-skills-safely/Chain SpecDD skills safely in a spec-driven development workflow by separating orientation, planning, authoring, implementation, testing, review, and tracing into clear phases with checkpoints.