77bf21b3a6
* test(#1995): regression test for agent-<id> branch namespace Add failing-first tests proving that normalizeCleanupManifestEntry and planWorktreeRecordAgent reject Claude Code's current agent-<id> isolation branches (only worktree-agent-<id> is accepted). Boundary tests cover both namespaces plus rejection cases. * fix(#1995): widen worktree branch regex to accept agent-<id> namespace Claude Code's isolation="worktree" branch naming changed from worktree-agent-<id> to agent-<id>. Widen the regex in all 7 locations from ^worktree-agent-[A-Za-z0-9._/-]+$ to ^(worktree-)?agent-[A-Za-z0-9._/-]+$ so both namespaces are accepted. Introduce a shared WORKTREE_AGENT_BRANCH_RE constant in src/worktree-safety.cts to prevent future drift. Closes #1995 * fix(#1995): update workflow guards, test assertions, and baselines Widen the branch-check regex in execute-phase.md and execute-plan.md. Update all test assertions that checked for ^worktree-agent- to expect the widened ^(worktree-)?agent- pattern. Regenerate golden-install-parity fixtures, agent-size-baseline, and workflow-size-baseline. Closes #1995 * fix(#1995): update extractCwdGuardBash sanity check for widened regex The e2e test's sanity check verified the extracted bash block contained 'worktree-agent-'. After widening to '(worktree-)?agent-', update the check to match the new pattern. * fix(#1995): widen missed workflow-guard branch check + changeset + lint fixes - hooks/gsd-workflow-guard.js: widen startsWith('worktree-agent-') to /^(worktree-)?agent-/ regex — same defect class, was missed in prior commit - tests/worktree.test.cjs: fix indentation regression from prior edit - Add .changeset/1995-worktree-agent-branch-namespace.md (pr:0 placeholder) Found by orthogonal code review (Step 4). * fix(#1995): regenerate golden + size baselines for workflow-guard change * docs(#1995): backfill changeset PR number (2548)
GSD Core
Git. Ship. Done.
English · Português · 简体中文 · 日本語 · 한국어
A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Antigravity 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, Antigravity 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, Antigravity 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 a new project or onboard an existing repo:
/gsd-new-project # greenfield project
/gsd-onboard # existing codebase
New here? Follow Your first project for a guided walkthrough from install to first shipped phase, or Onboarding an existing codebase for brownfield setup.
Documentation
What's new in 1.7.0 → docs/whats-new-1.7.0.md
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.