What is a delta spec in the context of this skill?

A delta spec focuses exclusively on the changes—additions, modifications, or removals—to an existing system's behavior rather than rewriting the entire specification from scratch.

What are the supported persistence modes?

The skill supports Engram (memory-based), OpenSpec (filesystem-based), Hybrid (both), and None (memory-only) to accommodate different project configurations.

How does this skill support automated testing?

It requires every requirement to have at least one scenario in Given/When/Then format, which provides a direct blueprint for writing unit, integration, or E2E tests.

Why does the skill use RFC 2119 keywords?

RFC 2119 keywords like MUST, SHOULD, and MAY provide a standardized way to define the strength and priority of requirements, reducing misinterpretation during implementation.

SDD Spec Architect

Name: SDD Spec Architect
Author: Gentleman-Programming

byGentleman-Programming

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1,082

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Herramientas para Desarrolladores

Generates structured requirements and testable scenarios for Spec-Driven Development workflows using RFC 2119 standards.

SDD Spec Architect is a specialized sub-agent for Claude Code designed to transform high-level feature proposals into actionable, structured technical specifications. By utilizing a delta-spec approach, it clearly documents what is being added, modified, or removed from a system's behavior, ensuring that every requirement is tied to a testable Given/When/Then scenario. This skill enforces rigorous RFC 2119 terminology to eliminate ambiguity and supports multiple persistence conventions like OpenSpec and Engram, making it an essential tool for teams practicing Spec-Driven Development (SDD) with AI agents.

Características Principales

01Multi-Mode Persistence: Seamlessly integrates with Engram, OpenSpec, and hybrid storage architectures.

02RFC 2119 Requirement Enforcement: Automatically uses standardized keywords like MUST, SHALL, and SHOULD for unambiguous specs.

03Domain-Based Organization: Automatically groups specifications by affected areas such as auth, UI, or API domains.

04Testable Scenarios: Generates Given/When/Then scenarios for every requirement to facilitate automated test creation.

051,082 GitHub stars

06Delta Spec Generation: Efficiently tracks system changes by focusing only on added, modified, or removed behaviors.

Casos de Uso

01Standardizing requirement formats across a distributed team of human and AI developers.

02Translating business requirements into technical delta specifications for AI sub-agents.

03Maintaining a living documentation system that updates automatically as features evolve.

Características Principales

01Multi-Mode Persistence: Seamlessly integrates with Engram, OpenSpec, and hybrid storage architectures.

02RFC 2119 Requirement Enforcement: Automatically uses standardized keywords like MUST, SHALL, and SHOULD for unambiguous specs.

03Domain-Based Organization: Automatically groups specifications by affected areas such as auth, UI, or API domains.

04Testable Scenarios: Generates Given/When/Then scenarios for every requirement to facilitate automated test creation.

051,082 GitHub stars

06Delta Spec Generation: Efficiently tracks system changes by focusing only on added, modified, or removed behaviors.

Casos de Uso

01Standardizing requirement formats across a distributed team of human and AI developers.

02Translating business requirements into technical delta specifications for AI sub-agents.

03Maintaining a living documentation system that updates automatically as features evolve.