* docs: align PR-FLOW push gate from gsd-test-summary to gsd-test gsd-test is the application (open-gsd/gsd-test-runner); gsd-test-summary is the legacy local wrapper. RULESET.PR-FLOW.docker-before-push now names gsd-test as the pre-push gate (exit 0 / verdict outcome 'passed'). * docs: drop WORKTREE.SEAM local node --test rule; align PROC dispatch to gsd-test - Remove WORKTREE.SEAM.execution-rule (prefer local node --test) — contradicts CLAUDE.md 'NEVER run node --test locally'; CLAUDE.md wins. - PROC.PARALLEL-FIX-DISPATCH: gsd-test-summary --both -> gsd-test (app; --both was a legacy wrapper flag). * feat(#1682): OpenCode companion-MCP binding (mcp.gsd) — Phase 5 Slice 1a configureOpencodePermissions registers the Phase-4 companion MCP server (gsd-mcp-server) as opencode mcp.gsd, so OpenCode connects to GSD's command (point 1) + state-IO (point 5) with no bespoke plugin (ADR-1239 Phase D). Idempotent + non-clobbering (add-if-absent; respects a user-defined mcp.gsd). Local-stdio schema per OpenCode config (packages/core/src/config/mcp.ts); `-p @opengsd/gsd-core` resolves the bin (name != package) under npx. Tests: registers-on-object-config; does-not-clobber-user-entry. * docs(changeset): OpenCode companion-MCP binding (#1682) * fix(#1682): use PACKAGE_NAME single-source (#516) + refresh opencode golden parity - mcp.gsd command: replace hardcoded '@opengsd/gsd-core' literal with PACKAGE_NAME from gsd-core/bin/lib/package-identity.cjs (#516 single-source). - opencode golden-install-parity fixture: refresh opencode.json hash for the added mcp.gsd block (configureOpencodePermissions output change). * docs(changeset): add docs-exempt marker (Phase 5 slice) * docs(changeset): backfill PR #1929
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.