119702ff29
Phase 3's gsd-test surfaced 8 pre-existing test-isolation races (in #2090's test files now on next). Per CLAUDE.md's no-defer rule these are fixed inline in the current change. Root-caused via /qa-test-architect — all bad-test (the rewrite-engine production code is race-free): - install-runtime-artifacts.test.cjs: the "rmSync when readFileSync throws" test diffed the SHARED os.tmpdir() for gsd-cmd-rewrites-* dirs and force-deleted any new one with no ownership check. Under --test-concurrency it deleted a sibling test file's LIVE tempDir mid-copy (the #1575 "ENOENT .../graphify.md") and misattributed it as its own leak. Fixed: capture the exact tempDir THIS call creates (fs.mkdtempSync monkeypatch, restored in finally) and assert only on that — never sweep/delete the shared os.tmpdir(). Also deduped the enh-1511 block the #1969 consolidation folded in 3x byte-identically (#1970/#1974/#1975) down to 1 copy; 308 unique test titles unchanged (verified). - issue-1575-agent-descriptor-parity.test.cjs: a missing }); nested the M2 'cursor attribution' test inside the per-runtime loop so it ran 7x (widening the tempDir window). Fixed the brace -> runs once as a describe sibling. - config-get-default.test.cjs: local run()/runRaw() spawned node via execFileSync with a fixed 5s timeout and no retry -> ETIMEDOUT under Docker load. Redesigned to call cmdConfigGet in-process (fs.writeSync fd-capture + process.exit sentinel, both restored in finally) — no subprocess, no wall clock. - runtime-artifact-conversion.cts: fixed the stale "No production caller today" JSDoc on rewriteStagedCommandBodies (real callers: applySurface, createRuntimeArtifactInstallPlan) — the false doc invited the bad test. Refs #2126, #2090 Co-Authored-By: Claude Opus 4.8 <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
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.