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* fix(#3518): pin uat_path to the phase's own UAT artifact via the shared phase-pinned resolver Both uat_path projectors in src/init.cts picked the phase's UAT file with a bare .find() over unsorted readdir order — no phase-membership check, no ordering — so a stray cross-phase 04-UAT.md in phase 03's directory could become phase 03's uat_path, filesystem-dependently (creation order on APFS, hash order on ext4/XFS): two machines on the same commit could emit different uat_path values for the same phase. Route both sites through a new resolveUatFile in src/verification.cts, the UAT counterpart of #3357/#3492's resolveVerificationFile, sharing the exact selection rule via one extracted core (resolvePhaseArtifactFile): the phase's own <token>-UAT.md always wins; otherwise the alphabetically-first dashed candidate (deterministic everywhere); a bare UAT.md only via allowBare when no dashed candidate exists. resolveVerificationFile now delegates to the same core — behavior byte-identical. Guarded by: two end-to-end repro tests in tests/init.test.cjs (plan-phase and phase-op, red on the pre-fix readdir pick), resolveUatFile contract anchors and a src/-wide call-site guard in tests/verification-status.test.cjs. * chore(#3518): add changeset fragment for PR #3525 --------- Co-authored-by: sim <sim@local>
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.