Best spec-driven development skills for Claude Code, Codex and other agents.

Walks you through a complete OpenSpec workflow cycle with narration while doing real work in your codebase.

Fission-AI/OpenSpec

Archives several completed OpenSpec changes in one operation, checking the codebase to resolve spec conflicts rather than archiving blindly.

Fission-AI/OpenSpec

Create or update the project constitution from interactive or provided principle inputs, ensuring all dependent templates stay in sync.

WeihanLi/WeihanLi.Common

Runs a spec-driven workflow from PRD to epic to GitHub issues to parallel agents, with status, standup and blocked-work reports from bundled scripts.

automazeio/ccpm

Perform a non-destructive cross-artifact consistency and quality analysis across spec.md, plan.md, and tasks.md after task generation.

kunstmusik/blue

Files a GSD phase artifact into MemPalace and mirrors its decision facts into the temporal knowledge graph, as a best-effort step that never blocks a phase.

open-gsd/gsd-core

Execute the implementation planning workflow using the plan template to generate design artifacts.

kunstmusik/blue

Turns a rough idea into an approved design before any code is written, sorting the request into spike, bounded or architectural and enforcing an approval gate.

jnMetaCode/superpowers-zh

Findings-first code review workflow for AI coding agents. An agent skill from zhu1090093659/spec_driven_develop.

zhu1090093659/spec_driven_develop

Create or update the feature specification from a natural language feature description.

kunstmusik/blue

Reviews BiSheng spec, design and tasks documents with checklists for PRD gaps, handover readiness and acceptance traceability, producing a report or an LGTM.

dataelement/bisheng

Understand what you mean before anything is built. An agent skill from prekuter/dryforge.

prekuter/dryforge

Applies the SPARC method (specification, pseudocode, architecture, refinement, completion) with 17 specialized modes and multi-agent orchestration, from research to deployment.

ruvnet/ruflo

Automates pre-development workflow for large-scale complex tasks.

zhu1090093659/deepseek-pp

Generate an actionable, dependency-ordered tasks.md for the feature based on available design artifacts.

kunstmusik/blue

Turns a React Router RFC discussion on GitHub into an implementation, weighing community feedback and settling open questions with you before coding.

remix-run/react-router

Phase 1 of Serial Studio's spec-driven workflow: capture WHAT a feature must do and WHY, with no implementation detail.

Serial-Studio/Serial-Studio

Runs a light convention check on one finished spec-driven task, choosing checks by task type and ending in pass, pass-with-notes or needs-fix.

dataelement/bisheng

Ingest external plans with conflict detection against project decisions before writing anything.

open-gsd/gsd-core

Bring an existing codebase into Dryforge, once. An agent skill from prekuter/dryforge.

prekuter/dryforge

After a bug is found, traces its root cause and feeds a new testable invariant back into the project spec so the bug class can't recur.

JuliusBrussee/cavekit

Identify underspecified areas in the current feature spec by asking up to 5 highly targeted clarification questions and encoding answers back into the spec.

kunstmusik/blue

Spec-driven workflow for non-trivial work. An agent skill from ikarenkov/Modo.

ikarenkov/Modo

Runs a three-step pipeline, requirement exploration, seven-model ontology YAML, then app build, on a Flask, SQLite, and React stack with sign-off gates.

sharptoolbox/ontology-driven-dev

Replaces line-by-line code review with an approved executable spec and a gauntlet of tests, types, coverage, and mutation checks the code must survive.

AmazingAng/old-coder

Mandatory - you must load the acai skill to learn the acai.sh process for spec-driven development whether planning, implementing, or reviewing code.

acai-sh/cli

Automates pre-development workflow for large-scale complex tasks.

zhu1090093659/spec_driven_develop

Compresses SPEC.md writes and spec-referencing prose into terse, symbol-heavy fragments that drop articles, filler and hedging while keeping facts intact.

JuliusBrussee/cavekit

This skill should be used when users want guidance on Spec-Driven Development methodology using GitHub's Spec-Kit.

SpillwaveSolutions/sdd-skill

Writes a structured specification before any code, moving through gated specify, plan, tasks and implement phases, with an optional capability map for multi-part requests.

addyosmani/agent-skills

Reference for MoAI-ADK's core development principles: TRUST 5 quality gates, SPEC-first domain-driven workflow, agent delegation and token budgeting.

modu-ai/moai-adk

Applies a 12-stage verified workflow, from research to deploy, to non-trivial coding tasks, scaled to lightweight, standard or full mode by task size.

artemiimillier/bulletproof

A skill your agent uses to scaffold Spec Driven Development: requirements.md, design.md, tasks.md, and cross-compatible AI config files (CLAUDE.md, .cursorrules, .windsurfrules…

FredAntB/Spec-Driven-Development

Reads human-written spec documents and produces per-epic requirement files with proof obligations plus behavior scenarios with stable IDs, using parallel chunked extraction.

prime-radiant-inc/iterative-development

A skill your agent uses when starting Claude Code projects, writing CLAUDE.md/spec.md, dispatching subagents, or requesting Agent Teams parallel development.

sangrokjung/claude-forge

Carry out the intent approved in ready, as meant, and prove it with checks that actually ran.

prekuter/dryforge

A skill your agent uses for the task format and the spec-driven development reference — the spec→build→document cycle and spec file structure — and for inspecting or editing existing tasks in .md…

syabro/mdtask

Git-native issue tracking (beads), coding guidelines, knowledge injection, and spec-driven planning for AI agents.

jlevy/strif

Read-only detector that compares SPEC.md with the code and reports invariant, interface and task drift grouped by severity, without changing anything.

JuliusBrussee/cavekit

Generate feature specifications by analyzing existing source code.

dceoy/speckit-agent-skills

Convert existing tasks into actionable, dependency-ordered GitHub issues for the feature based on available design artifacts.

kunstmusik/blue

Convert Claude Code commands (.claude/commands/.md) to standard Agent Skills (skills//SKILL.md).

dceoy/speckit-agent-skills

Autonomous, spec-driven, multi-agent pipeline that takes an EDT-MCP task or issue end-to-end — research → critics → architect → parallel development → review loop → tests → live-stand check →…

DitriXNew/EDT-MCP

Carries out an approved plan for an agtx-managed task: implements the changes, runs tests, commits, writes a summary to .agtx/execute.md and then stops.

fynnfluegge/agtx

Manages SPEC documents for MoAI-ADK development, with GEARS or EARS requirement notation, acceptance criteria and a link into the Plan-Run-Sync workflow.

modu-ai/moai-adk

Reads a codebase silently, asks only what it cannot infer, and recommends one AI-assisted development methodology stack with a contextual quick start.

FlorianBruniaux/claude-code-ultimate-guide

Creates specs before coding. An agent skill from abashev/vfs-s3.

abashev/vfs-s3

Turns a vague feature request into a written spec with scope, phases, acceptance criteria and do-not-do limits that a coding agent can follow without guessing.

tryproduck/produck-skills