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The acknowledgment explains one PR's unattributable emitted-artifact delta. The moment that PR merges the delta is in the base, so the acknowledgment can never clear anything again — its useful life is exactly the PR's open window. It is stored in permanent, shared, merge-path state. That single lifetime mismatch is the origin of six consecutive rounds of defect-and-fix (#2789, #2914, #3078, #3823, #3842, #3875), each fix generating the next defect, ending in a scheduled sweeper whose own PR (#3927) could not merge itself. ADR-3942 supersedes ADR-2719 section 3 only, and its #2789 Amendment. Sections 1, 2 and 4-7 are retained and depended upon: the conservation law itself is not in question, only where its escape hatch is stored. Also lands the root-cause research note behind the decision, and regenerates the ADR index. Two corrections to earlier framing, recorded here rather than dropped: - Per-commit trailers do NOT reliably survive squash-merge; the repo's own ship.md:306 reconstructs a gate trail precisely because squash discards it. The ADR therefore claims no durable audit record on next. Non-survival is the property being bought, not a cost. - The test job checks out at depth 1 (test.yml:107-110, no fetch-depth key). A depth-1 checkout cannot see the PR's commit range and fails VACUOUSLY rather than erroring, so fetch-depth: 0 is a named decision in the ADR and the acceptance criterion requires a test that fails under depth 1. Docs-only; no code, no changeset. Refs #3942 Co-authored-by: sim <sim@local>
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.