* test(#947): add regression tests and update stale Hermes assertions - Add bug-947-hermes-gsd-prefix.test.cjs: 12 TDD tests covering fresh install canonical layout, bare-stem migration, manifest key format, and non-Hermes runtime isolation - Update hermes-skills-migration.test.cjs: bare-stem → gsd-prefixed path and name assertions (#947 canonical layout) - Update install-nested-layout.test.cjs: Hermes NEST matrix prefix '' → 'gsd-' - Update install-regressions.test.cjs: Defect #1 now seeds bare-stem dirs (help/, quick/) and asserts gsd-help/ canonical output; use real GSD stems so readGsdCommandNames() migration finds them - Update install-runtime-artifacts.test.cjs: Hermes nested layout and legacy migration assertions align with gsd- prefix - Update install.test.cjs: Hermes install test uses gsd- prefixed paths - Update runtime-artifact-layout.test.cjs: prefix '' → 'gsd-' Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix(#947): restore gsd- prefix on Hermes skills for canonical dispatch Hermes skills were installing under bare-stem paths (skills/gsd/<stem>/SKILL.md, name: <stem>) due to prefix: '' set in ADR-3660 / #3664. This broke /gsd-<stem> dispatch and forced users to invoke skills without the gsd- namespace prefix. - src/runtime-artifact-layout.cts: change Hermes skillsKind prefix from '' to 'gsd-'; skills now land at skills/gsd/gsd-<stem>/SKILL.md with name: gsd-<stem> - bin/install.js _runLegacyInstallMigrations: invert the #3664 migration — remove stale bare-stem dirs (using readGsdCommandNames() to distinguish GSD-owned stems from user content), keep gsd-* dirs which are now canonical - bin/install.js _runLegacyUninstallCleanup: also remove bare-stem dirs on uninstall for clean teardown - bin/install.js uninstallRuntimeArtifacts: post-cleanup removes DESCRIPTION.md and empty skills/gsd/ category dir on Hermes - bin/install.js: remove skillListPrefix Hermes exception (now uses shared 'gsd-' path) - docs/adr/3660-runtime-artifact-layout-module.md: document #947 reversal of the bare-stem sub-decision Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * chore: add changeset for #947 fix (#955) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix(#947): remove ALL pre-migration bare-stem Hermes skills on reinstall (adversarial review) Replace readGsdCommandNames()-based bare-stem cleanup (which missed skills not in the commands source tree, e.g. dev-preferences) with _removeHermesBareStemDirs(), called AFTER the install loop when the exact set of installed gsd-<stem>/ dirs is authoritative. For every gsd-<stem>/ written this run, the corresponding bare skills/gsd/<stem>/ is removed. User-owned bare dirs with no gsd-<stem> counterpart are preserved. Add two adversarial-review regression tests that FAIL on old code: - bare skills/gsd/dev-preferences/ removed when gsd-dev-preferences/ installed - user-owned bare dir with no gsd-<stem> counterpart is preserved (no over-deletion) Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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, 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.