a02462e050
The recurrence guard, and #2665's own "Optional hardening". This class is silent by construction: TEST_ENV_BASE cannot see an in-process caller, and CI cannot see the class at all because CI never has these env vars set. It damages the developer's machine and reports nothing -- which is how two prior authors each diagnosed it and fixed only the instance in front of them. run-tests.cjs snapshots GSD's install footprint in every live runtime config dir before the suite and re-checks it after, failing the run on a create or a modify. Roots come from the product's own getGlobalConfigDir, so the guard watches wherever the product actually points, including through an ambient var. Scope is ownership-based, not whole-root: the top-level install footprint plus gsd-prefixed children of dirs GSD shares with the host agent. A config root like ~/.claude is shared, and watching it wholesale would false-positive on the host's own history.jsonl or settings.json -- a guard that cries wolf gets disabled, and then catches nothing. The prefix test is load-bearing: the first version watched only the three top-level entries and MISSED a real leak into skills/gsd-*. It earned its place immediately -- it is what found the fifth in-process leak in runtime-artifact-layout.test.cjs, which no amount of reading the review would have surfaced. Known gap documented in the module: a write to a file GSD does not own is out of scope by construction. Lives in scripts/, deliberately NOT scripts/lib/ -- the installer copies that dir into every user's config dir wholesale while uninstall removes only an allowlist, so a test-only module there would ship to users and survive uninstall. Addresses review finding: Minor 8.
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, 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.