d2e727d3b3
ADR-1671 attributed its MCP deferral to "ADR-857 §7 / #956" at five sites. Neither source supports it: docs/adr/857-capability-system.md contains zero MCP references (its Decision 7 is third-party code-loading, Decision 8 is Runtime-as-Capability), and #956 is the closed first-party MemPalace plugin pre-proposal that ADR-1239 explicitly disclaims in its own header. The deferral itself is sound on ADR-1671's own runtime-partial reasoning and never needed the borrowed citation. Ground it there, cross-reference ADR-1239 as the ADR that owns GSD's MCP surface, and record that a companion MCP server shipped 2026-06-28 with three tools - so "MCP is deferred" is not misread as "GSD has no MCP server". The deferral narrows to the served resources and prompts catalog (#3072). Also record that "deferred-tools", named alongside resources and prompts, is not a deferred surface but an unbuildable one: MCP defines three server primitives and the tools surface is tools/list plus tools/call, so schema deferral is host behavior, not a server capability (#3075). Correct two stale counts: 15 runtimes -> 19 (of 44 capability descriptors). The ADR-857 reference in Open questions is a genuine Phase-6 completion property and is deliberately left untouched. Closes #3074 Co-authored-by: sim <sim@local>
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, 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.