https://specdd.ai/how-to/write-specs-by-level/Spec-driven development guides for writing root, module, feature, service, model, adapter, API, component, job, event, policy, package, library, and repository specs.Hugoen-ushttps://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/write-specs-by-level/how-to-write-a-module-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-module-spec/Write a SpecDD module spec for spec-driven development with bounded domain, subsystem, directory, or package-area ownership, structure, dependencies, and non-goals.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-feature-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-feature-spec/Write a SpecDD feature spec for spec-driven development with user-visible or business capability behavior, scenarios, boundaries, and completion criteria.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-service-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-service-spec/Write a SpecDD service spec for spec-driven development with orchestration or application behavior, owned files, dependencies, tasks, scenarios, and boundaries.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-model-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-model-spec/Write a SpecDD model spec for spec-driven development with domain state, entities, value objects, invariants, accepted values, and model boundaries.https://specdd.ai/how-to/write-specs-by-level/how-to-write-an-adapter-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-an-adapter-spec/Write a SpecDD adapter spec for spec-driven development around an external-system boundary such as storage, APIs, files, queues, or browser APIs.https://specdd.ai/how-to/write-specs-by-level/how-to-write-an-api-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-an-api-spec/Write a SpecDD API spec for spec-driven development with HTTP, GraphQL, RPC, CLI, webhook, or other inbound-interface inputs, outputs, errors, and validation.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-component-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-component-spec/Write a SpecDD component spec for spec-driven development with UI component behavior, props, state expectations, interactions, rendering boundaries, and scenarios.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-job-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-job-spec/Write a SpecDD job spec for spec-driven development with background, scheduled, queue, worker, or batch-work triggers, idempotency, failure handling, and checks.https://specdd.ai/how-to/write-specs-by-level/how-to-write-an-event-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-an-event-spec/Write a SpecDD event spec for spec-driven development with emitted or consumed events, message payloads, producers, consumers, handlers, and compatibility boundaries.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-policy-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-policy-spec/Write a SpecDD policy spec for spec-driven development with authorization, permission, eligibility, or business decision rules, inputs, allowed and denied outcomes, and scenarios.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-package-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-package-spec/Write a SpecDD package spec for spec-driven development with monorepo or package-level ownership, public surface, dependency rules, tests, and release expectations.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-library-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-library-spec/Write a SpecDD library spec for spec-driven development with internal or public library APIs, compatibility, examples, boundaries, and documentation expectations.https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-repository-spec/https://specdd.ai/how-to/write-specs-by-level/how-to-write-a-repository-spec/Write a SpecDD repository spec for spec-driven development with monorepo or repository content-root structure, shared boundaries, package roles, and global constraints.