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Close Spec

Close Spec is an agent skill (a SKILL.md file) from dzhng/skills. When a spec under specs// is done shipping (a write-spec build, or any planned task that produced a spec), archive it to specs/done/ and rewrite it… It works with Claude Code, Codex, Cursor and OpenCode and has 1,013 GitHub stars across a repository of 2 listed skills.

github.com/dzhng/skills/skills/engineering/close-spec (opens in a new tab)

View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/dzhng/skills.git
cp -r skills/skills/engineering/close-spec ~/.claude/skills/close-spec   # personal, or .claude/skills in a project

In the Claude apps, zip the close-spec folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/dzhng/skills.git
cp -r skills/skills/engineering/close-spec .agents/skills/close-spec   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/dzhng/skills.git
cp -r skills/skills/engineering/close-spec .cursor/skills/close-spec   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

When a spec under specs// is done shipping (a write-spec build, or any planned task that produced a spec), archive it to specs/done/ and rewrite it from a build-plan into a durable rationale — the why, the principles, the invariants — pointing back to the real code for the how. Use when implementation has landed and the plan no longer matches what shipped, or the user says a feature/spec is finished. Pairs with write-spec (the plan this closes) and review (run before closing).

When it triggers

  • Use when implementation has landed and the plan no longer matches what shipped, or the user says a feature/spec is finished.

More skills in dzhng/skills

2 skills are listed from this repository.

Similar skills

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All Docs & writing

FAQ

Close Spec FAQ

Still curious? Email info@appsgit.com.

What is the Close Spec skill?

Close Spec is an agent skill (a SKILL.md file) from dzhng/skills. When a spec under specs// is done shipping (a write-spec build, or any planned task that produced a spec), archive it to specs/done/ and rewrite it… It works with Claude Code, Codex, Cursor and OpenCode and has 1,013 GitHub stars across a repository of 2 listed skills. Its SKILL.md lives at github.com/dzhng/skills/skills/engineering/close-spec.

How do I install the Close Spec skill?

Copy the close-spec folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Close Spec skill free?

Yes. The repository is open source under the MIT license.

Is Close Spec maintained?

The repository's most recent commit was on Oct 5, 2026. appsgit only lists skills from repositories with a commit in the last six months.