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* fix(#812): honor COPILOT_HOME in Copilot global config-dir resolution getGlobalConfigDir('copilot') resolved the global config directory using only --config-dir > COPILOT_CONFIG_DIR > ~/.copilot, ignoring the COPILOT_HOME env var. Per GitHub's Copilot CLI docs, COPILOT_HOME overrides the default ~/.copilot location (and user-level hooks are read from $COPILOT_HOME/hooks/), so a global --copilot install wrote all artifacts (skills, agents, copilot-instructions.md, the gsd-session.json hook) to ~/.copilot even when the user relocated their Copilot home, making them undiscoverable by Copilot CLI. Mirror the codex/CODEX_HOME branch: precedence is now --config-dir > COPILOT_CONFIG_DIR > COPILOT_HOME > ~/.copilot. Uninstall uses the same resolver, so it stays symmetric. Also: document COPILOT_HOME in the installer --help notes, the USER-GUIDE env-var table, and the installer-migrations Copilot row; and clear COPILOT_HOME in the two default-path test suites so they stay hermetic now that the resolver honors it. Closes #812 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * chore(#812): add changeset for PR #814 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
GSD Core
Git. Ship. Done.
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A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Gemini CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.
What is GSD Core
GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Gemini CLI, Copilot, Cursor, and more) through a disciplined phase loop. It solves context rot — the quality degradation that accumulates as an AI fills its context window — by running all heavy research, planning, and execution work in fresh-context subagents while keeping your main session lean.
How it works
Each milestone repeats the same five-step loop, one phase at a time:
- Discuss — capture implementation decisions before anything is planned
- Plan — research, decompose, and verify the plan fits a fresh context window
- Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
- Verify — walk through what was built; diagnose and fix before declaring done
- Ship — create the PR, archive the phase, repeat for the next one
Quickstart
npx @opengsd/gsd-core@latest
The installer prompts for your runtime (Claude Code, OpenCode, Gemini CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more) and whether to install globally or locally. The installer is required for cross-runtime compatibility — do not copy files from agents/ or commands/ directly.
On another runtime or without Node.js? See Install on your runtime.
Once installed, start your first project:
/gsd-new-project
New here? Follow Your first project for a guided walkthrough from install to first shipped phase.
Documentation
Tutorials — learning by doing:
How-to guides — task-focused recipes:
Reference — authoritative facts:
Explanation — concepts and design decisions:
Full index: docs/README.md. Other languages: 日本語 · 한국어 · Português · 简体中文.
Why it works
Most AI-coding setups fail at scale because context bloat silently degrades output quality, there is no shared memory between sessions, and nothing verifies that code actually works. GSD Core solves all three: heavy work runs in fresh subagents, structured artifacts like STATE.md and CONTEXT.md survive session boundaries, and the verify step walks through what was built and generates fix plans before a phase is declared done. See docs/explanation/context-engineering.md for the full reasoning.
Troubleshooting? See docs/how-to/recover-and-troubleshoot.md.
Community
| Project | Platform |
|---|---|
| gsd-opencode | Original OpenCode port |
| Discord | Community support |
Star History
License
MIT License. See LICENSE for details.
Claude Code is powerful. GSD Core makes it reliable.