skill CX Codex

speckit-implement — Claude Code skill: what it does, how to install

Q: How to install speckit-implement in Claude Code?

Run `npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a claude-code` in your terminal.

Q: What does speckit-implement do?

It executes tasks recorded in `tasks.md` while adhering to guidelines from `plan.md`. It also validates review checklists and runs pre-implementation hooks.

Executes development tasks from tasks.md in spec-kit projects. It validates readiness checklists, triggers pre-implementation hooks, and configures ignore files.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓

npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a claude-code

Open on GitHub

What speckit-implement does

The skill reads implementation tasks from tasks.md and follows the architecture defined in plan.md. When optional files like data-model.md, API contracts, or constitution.md exist, the agent includes their constraints during execution.

Before modifying code, the agent runs check-prerequisites.sh and verifies all checklists in the feature directory. If any checklist has unchecked items, implementation halts until you approve proceeding. It also triggers registered before_implement hooks from extensions.yml.

This workflow requires an existing spec-kit structure with a .specify/ directory. Missing prerequisites cause immediate failure.

What it helps with

execute development tasks listed in tasks.md
validate requirements checklists before writing code
create or update repository ignore files
run pre-implementation extension hooks automatically

Example prompts for the agent

/speckit-implement
/speckit-implement prioritize phase 1 tasks
/speckit-implement task 1

How to install speckit-implement

1Skills CLI (Vercel)

npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a claude-code

2Manually: put the files in place

~/.claude/skills/speckit-implement/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/speckit-implement/

1Skills CLI (Vercel)

npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a codex

2Manually: put the files in place

.agents/skills/speckit-implement/SKILL.md

For all projects use ~/.agents/skills/

1Skills CLI (Vercel)

npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a cursor

2Manually: put the files in place

.cursor/skills/speckit-implement/SKILL.md

Cursor also reads .agents/skills/ and .claude/skills/

1GitHub CLI

gh skill install dceoy/speckit-agent-skills speckit-implement

2Manually: put the files in place

.github/skills/speckit-implement/SKILL.md

1Skills CLI (Vercel)

npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a gemini-cli

2Platform CLI

gemini skills install https://github.com/dceoy/speckit-agent-skills --path skills/speckit-implement

Manually: put the files in place

.devin/skills/speckit-implement/SKILL.md

The legacy .windsurf/skills/ path still works

Skills CLI (Vercel)

npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a opencode

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about speckit-implement

How to install speckit-implement in Claude Code?

Run npx skills add dceoy/speckit-agent-skills --skill speckit-implement -a claude-code in your terminal.

What does speckit-implement do?

It executes tasks recorded in tasks.md while adhering to guidelines from plan.md. It also validates review checklists and runs pre-implementation hooks.

What is required to run speckit-implement?

The repository must follow the spec-kit structure and contain the .specify/ directory. Without the prerequisite bash scripts, execution halts.

plan owainlewis Turns an approved spec or brief into ordered vertical tasks for separate agent runs. It groups work into usable milestones with acceptance checks. CX Codex +1 747installs groove-daily-start andreadellacorte Prepares the workday: reviews recent days, creates today's memory file, loads tasks and lays out the agenda. CX Codex +1 571installs task-management official anthropics Tracks commitments, active work, and follow-ups in a local TASKS.md file. Useful when managing project to-dos directly from the AI coding chat. CX Codex +1 7,200installs Asana Automation Claude Office Skills A skill that automates Asana: creates and updates tasks, moves them across sections, tracks team workload and builds project reports. CX Codex +1 6,900installs update official anthropics Skill reconciles TASKS.md and memory/ against your tracker, chat and email, flags missed todos and memory gaps. Handy when your task list has drifted from what you actually promised. CX Codex +1 5,000installs todoist-api intellectronica This skill tells the agent how to drive Todoist through the td CLI: tasks, projects, sections, labels and comments. Handy when you want your lists sorted without leaving the chat. CX Codex +1 1,700installs

From the same set10

speckit-plan Executes implementation planning workflows inside spec-kit projects to produce research notes and interface contracts. CX Codex +1 2,500installs speckit-specify Turns a plain-language feature description into a spec folder: short name, number, spec.md from the template, and a path saved in .specify/feature.json. CX Codex +1 2,600installs speckit-constitution This skill writes and updates the project constitution in .specify/memory/constitution.md, turning your principles into a versioned governance doc. CX Codex +1 2,400installs speckit-tasks This skill turns plan.md and spec.md into a tasks.md ordered by dependencies and user stories. Useful when the feature is already described in spec-kit but the work queue is not. CX Codex +1 2,400installs speckit-clarify Scans a feature spec for gaps, asks up to 5 targeted questions and writes the answers back into the spec file. CX Codex +1 2,200installs speckit-taskstoissues Turns tasks from tasks.md into dependency-ordered GitHub issues. The skill is marked deprecated and points to a replacement extension. CX Codex +1 1,500installs speckit-baseline This skill reads your source files and turns them into a framework-agnostic feature spec with user stories and requirements. Useful when a codebase exists but written requirements do not. CX Codex +1 1,500installs speckit-checklist Generates a custom requirements-quality checklist for a feature specification. It helps reviewers catch ambiguous phrasing and missing edge cases before coding starts. CX Codex +1 1,500installs