7d0c6339d0
* test(#4705): add failing-first coverage for native Antigravity tool sequences * fix(#4705): emit Antigravity-native tool names as a YAML sequence convertClaudeAgentToAntigravityAgent and the installer's twin emitted Gemini CLI tool names as a comma-separated scalar. Antigravity's documented subagent contract (antigravity.google/docs/subagents) wants a YAML sequence of native names — view_file, grep_search, run_command, replace_file_content are the documented examples, and wrong or malformed grants can hang the subagent per Antigravity's own warning. Map values move to the native vocabulary where documented (Read -> view_file, Edit -> replace_file_content, Bash -> run_command, Grep -> grep_search); undocumented entries keep their best-known grant rather than being dropped (dropping would silently remove a restriction). The emitter writes one '- name' item per line; an agent whose every tool was filtered emits an explicit tools: [] instead of an empty scalar. Pre-existing pins updated to the native vocabulary. * test(#4705): update the #4727 map-value pin to the Antigravity-native vocabulary The #4727-era pin held the map VALUES at the Gemini CLI dialect on the belief that Antigravity speaks it; the confirmed bug #4705 (with Antigravity's own documented subagent contract) supersedes that for the four documented names. Key/shape pinning is preserved; only the values move. * docs(#4705): backfill changeset PR number --------- 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.