* fix(#2200): scope phase-complete roadmap writes to the current milestone runPhaseCompleteTransaction's roadmap mutators ran unanchored / un-milestone- scoped / first-match over the whole ROADMAP: the phase-checkbox flip could check a bullet inside a backticked prose literal or an earlier Backlog entry instead of the closing phase's bullet (a transposition), and the Plans-count writer could bind to a same-numbered phase in a shipped milestone. - Add currentMilestoneRawRanges(content, cwd) to roadmap-parser.cts: raw [start,end) offsets of the active milestone's region(s) (primary section + the optional Phase Details section), mirroring extractCurrentMilestone's selection. - Line-anchor the phase checkbox pattern (^ + m flag) so an inline / backticked prose literal cannot match. - Apply the phase-checkbox flip, the Plans-count write, and the per-plan checkbox flips ONLY within the current milestone window(s) via a mutateMilestonePhase helper (splice later windows first so offsets stay stable). Fall back to whole- content mutation when there is no versioned active milestone (prior behaviour). The Progress-table writer stays as-is (already scoped to ## Progress, #2012). Closes #2200 * docs(#2200): add changeset fragment * docs(#2200): backfill PR number in changeset fragment
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
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.