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* fix: address orthogonal-review findings on the new work in this PR Isolated code-review + security-review of everything added to this PR since its original review (hono override, check-env.cjs rewrite/revert, new lib file, its test, installer enumeration). Security review: clean, no findings. Code review found: - BLOCKER: .changeset/silly-hens-relax.md described a hono override this PR no longer actually makes -- PR #4560 landed the identical fix on next first, and this branch's own hono commit became a genuine no-op the moment it was rebased onto that updated next (git diff origin/next -- package.json package-lock.json is empty). Deleted the orphaned changeset; next already carries #4560's equivalent one (.changeset/zesty-seals-click.md). - HIGH: .changeset/tame-hens-jump.md's body still described the execNpm-routing approach that was tried and reverted -- stale text from before that revert, would have shipped a release note for code that isn't actually in the diff. Rewritten to describe what actually shipped (self-contained spawnSync, 15s timeout, accurate ENOENT vs. timeout vs. non-zero-exit diagnosis). - LOW: no comment explaining why the spawnSync call has no try/catch (safe -- its documented contract routes failures through the returned result, never a throw -- but worth stating given this file's whole purpose is graceful degradation). Added one. - nit: exitCode 0 + empty stdout fell through to "npm binary not found on PATH", misdescribing a real npm binary that simply printed nothing. Gave it its own message; updated the corresponding test. Manually re-verified describeNpmVersionCheckFailure's branches and the real check:env success path before re-running gsd-test, since this repo blocks local node --test. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * fix: rest of the orthogonal-review fixes (previous commit only caught the deletion) Tooling mistake in the previous commit: a git add with the already-staged deleted changeset mixed into the same pathspec list errored out and silently skipped staging the other four files, so only the changeset deletion actually committed. This commit carries the rest of that same change: tame-hens-jump.md's rewritten body, check-env.cjs's no-try/catch comment, npm-version-check-diagnosis.cjs's exitCode-0-empty-stdout fix, and the corresponding test update. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * docs(#4460): fix changeset pr field to point at this PR, not the original .changeset/tame-hens-jump.md's pr field still said 4552 (the PR its original text was authored under), but this PR (#4572) is what's actually landing the corrected body -- changeset-lint's own DEFECT.CHANGESET-PR-FIELD-DRIFT check caught it: "pr: 4552, expected pr: 4572". Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
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.