07adeb50a0
* fix(#1342): scope worktree-path-guard to GSD executor runs; fail open for no-repo targets The PreToolUse worktree-path-guard fired for any Write/Edit in any linked git worktree, with no check for active GSD work — so Claude Code plan-mode writing ~/.claude/plans/<slug>.md from a manually-created worktree was hard-blocked. - Gate enforcement on the GSD isolated-executor branch namespace (^worktree-agent-[A-Za-z0-9._/-]+$, per worktree-branch-check.md #2924); the guard is a no-op in non-GSD linked worktrees. - Fail open when a target resolves to no git repository (e.g. ~/.claude/plans/) instead of blocking — that is not the #260 main-repo vector. A target inside a .git directory still blocks (git rev-parse --is-inside-git-dir). - The #260 different-git-root hard block (escape to the main repo) is preserved. Detached-HEAD executors no-op the gate; this is accepted because they are fail-closed by worktree-branch-check.md (exit 42) before committing. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * chore(#1342): add changeset for worktree-path-guard scoping fix Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * test(#1342): build dot-dot traversal path portably (Windows drive-letter fix) The traversal test built its file_path by stripping a leading slash from an absolute externalDir and path.join-ing it after a `..` chain. On Windows the drive letter (C:\) is not a leading slash, so it survived and path.resolve produced an invalid doubled-drive path (C:\C:\Users\...), which resolves to no git repo — the hook failed open (exit 0) and the test expected a block (exit 2). Use path.relative(worktreeDir, externalTarget) + string concat so the file_path carries literal `..` segments that resolve to externalTarget on both posix and win32 (no drive doubling). Verified with path.win32/path.posix. 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, Kimi 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, Kimi 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, Kimi 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.