61be100a02
Two changes to ADR-0174 §5 (Sync dispatch with tight-typed Result<T>): 1. Reconcile the documented Result type to the as-built code. The original §5 text planned 'Unknown' / 'BadArgs' / 'ValidationFailed' / 'NotImplemented' / 'HandlerFailed'; the SDK retirement migration kept the ADR-0012 names (UnknownCommand / InvalidArgs / HandlerFailure) and never added the planned ValidationFailed or NotImplemented variants. HandlerRefusal was added during implementation but never back-filled into this ADR. The ADR now documents what consumers actually depend on. 2. Add the optional exitReason?: string field on the InvalidArgs variant (and update the makeInvalidArgs factory signature). This carries an ERROR_REASON enum value separately from the existing reason explanation text, so capability routers migrating from direct error(msg, ERROR_REASON.USAGE) calls to makeInvalidArgs(...) Results preserve ERROR_REASON granularity through the Hub Result → error(msg, exitReason) translation. The field is additive and backward-compatible. Also tightens the amendment requirement: 'Adding a new variant OR adding a field to an existing variant requires amending this ADR.' Phase 0 of parent #1641. No code changes; pure ADR amendment.
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.