# openspec-apply-change

> Claude/Codex skill by [@fission-ai](https://omgskills.com/library/fission-ai/index.md) · 72k stars · Updated 2026-10-17

Implement tasks from an OpenSpec change. Use when the user wants to start implementing, continue implementation, or work through tasks. Also use when the user says "openspec apply", "opsx apply", or "openspec implement".

Tags: ai, context-engineering, engineering, planning, prd, sdd, sdlc, spec, spec-driven-development, specification

## Install

```sh
git clone https://github.com/Fission-AI/OpenSpec /tmp/OpenSpec && ln -s /tmp/OpenSpec/skills/openspec-apply-change ~/.claude/skills/openspec-apply-change
```

## From README

Implementing: (schema: ) Working on task 3/7: \[...implementation happening...\] ✓ Task complete Working on task 4/7: \[...implementation happening...\] ✓ Task complete Implementation Complete Change: Schema: Progress: 7/7 tasks complete ✓ Completed This Session \[x\] Task 1 \[x\] Task 2 ... All tracked tasks are complete. Review or verify the change as appropriate before archiving. You can archive this change with /openspec-archive-change. Implementation Paused Change: Schema: Progress: 4/7 tasks complete Issue Encountered Options: Other approach What would you like to do?

## Links

- HTML page: https://omgskills.com/skills/fission-ai/openspec/openspec-apply-change/
- GitHub: https://github.com/Fission-AI/OpenSpec
- Author: [@fission-ai](https://omgskills.com/library/fission-ai/index.md)

## More from this repo

- [draft-openspec-docs](https://omgskills.com/skills/fission-ai/openspec/draft-openspec-docs/index.md) — Collaborative page-drafting mode for the OpenSpec docs.
   - [@fission-ai](https://omgskills.com/library/fission-ai/index.md) · 73k stars
- [openspec-archive-change](https://omgskills.com/skills/fission-ai/openspec/openspec-archive-change/index.md) — Archive a completed OpenSpec change in the experimental workflow.
   - [@fission-ai](https://omgskills.com/library/fission-ai/index.md) · 72k stars
- [openspec-bulk-archive-change](https://omgskills.com/skills/fission-ai/openspec/openspec-bulk-archive-change/index.md) — Archive multiple completed OpenSpec changes at once.
   - [@fission-ai](https://omgskills.com/library/fission-ai/index.md) · 72k stars