a2331c01f1
* test(#4568): pin the N-segment phase-grammar defect across all 6 shell/markdown sites Manually traced against the current tree: the validating regex at code-review.md rejects a 3-segment id (23.1.2), and execute-plan.md's extraction truncates a 23.1.2-01-PLAN.md filename down to 1.2-01. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * fix(#4568): widen the phase-number regex to accept N-segment ids at all 6 shell/markdown sites Widens `?` to `*` on the dotted-segment group at all 6 sites (byte-identical behavior for 1- and 2-segment ids, character class unchanged): code-review.md, code-review-fix.md, gsd-code-fixer.md, gsd-code-fixer.compact.md (validating sites, plus their comment/error-message text), execute-plan.md's plan-filename extraction, and plan-phase.md's --research-phase flag capture. Also disambiguates the nsegment-phase-grammar test's plan-phase.md anchor, which was matching an unrelated earlier `--research-phase` occurrence (line 77's generic-value capture) instead of the targeted site (line 131). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * chore(#4634): extend lint-phase-id-drift to ban the single-segment phase regex in workflows/ and agents/ Adds findSingleSegmentPhaseRegexDrift, banning the bounded `[0-9]+(\.[0-9]+)?` shape (and its \d/doubled-backslash near-variants) on any phase-carrying line across gsd-core/workflows/**/*.md, gsd-core/references/**/*.md, and the newly-scanned agents/**/*.md, sanctioned the same way as the existing shell-arith rule. Wired into scanAll; confirmed zero violations against the real tree post-#4568 fix. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * docs(#4568): add Fixed changeset Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * chore: regenerate conformance-tier manifests for the new test file The emitted-attribution gate also flags 4 files growing: code-review-fix.md (+21 bytes), code-review.md (+21 bytes), gsd-code-fixer.compact.md (+9 bytes), gsd-code-fixer.md (+6 bytes). The growth is the fix itself: each site's validation regex widened from a bounded single-optional-dotted-segment shape to the unbounded form, and the accompanying comment/error-message text grew by a few characters to mention the new 3-segment example. Emitted-Drift-Ack-Growth: code-review-fix.md — widens the phase-number validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the comment/error text (#4568) Emitted-Drift-Ack-Growth: code-review.md — widens the phase-number validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the comment/error text (#4568) Emitted-Drift-Ack-Growth: gsd-code-fixer.compact.md — widens the padded_phase validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the error text (#4568) Emitted-Drift-Ack-Growth: gsd-code-fixer.md — widens the padded_phase validation regex from a bounded single-dotted-segment shape to accept N-segment ids, and adds a 3-segment example to the comment/error text (#4568) Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> * chore(#4568): backfill changeset pr number to 4646 Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Sonnet 5 <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
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.