* fix(#1205): roadmapper applies phase_id_convention to generated phase IDs - Add Phase ID Convention section to <phase_identification> block: documents sequential (default) vs milestone-prefixed forms, and instructs the agent to read phase_id_convention from config.json - Update <output_formats> to show both header and checklist forms for sequential and milestone-prefixed conventions with examples (e.g. ### Phase 1-01: Name, - [ ] **Phase 1-01: Name**) - Add TDD regression test tests/bug-1205-roadmapper-convention.test.cjs (5 assertions, confirmed fail-first then pass after fix) - Update tests/agent-size-baseline.json to reflect legitimate growth - Add .changeset/brave-otters-leap.md (Fixed, pr:0 placeholder) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * chore: backfill changeset pr: 1215 for fix/1205 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * test(#1205): move phase_id_convention regression into roadmapper-granularity.test.cjs lint-regression-test-names rejects new standalone bug-NNNN-*.test.cjs files; regression cases must live in the owning module's test file. Move the 5 phase_id_convention assertions (#1205 regression) from the removed tests/bug-1205-roadmapper-convention.test.cjs into tests/roadmapper-granularity.test.cjs as a new describe block, alongside the existing granularity calibration tests. Also update the allow-test-rule comment to cover both #163 and #1205 surface contracts. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * test(#1205): fix lint-allow-test-rule-refs for roadmapper-granularity - Add issue ref (see #1205) to allow-test-rule comment in tests/roadmapper-granularity.test.cjs so lint-allow-test-rule-refs passes (new exemptions require #NNN per ADR-456) - Prune stale 'source-text-is-the-product' entry from scripts/lint-allow-test-rule-refs.allowlist.json (ratchet-down; comment now compliant and no longer needs grandfathering) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <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, Gemini 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, Gemini 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, Gemini 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 your first project:
/gsd-new-project
New here? Follow Your first project for a guided walkthrough from install to first shipped phase.
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.