444137e63a
Down to 3 remote failures, all one chain. The explicit no-events reporting is working — the diagnostic now states the events file does not exist, instead of silently printing the generic message. But it then ASSERTED a cause: "the child was killed before the reporter wrote even one event (process/spawn startup stall, not a test hang)". That was a guess dressed as a finding, and the fixture contradicts it: it starts a real test, so test:start should fire in milliseconds against a 2000ms budget. Two hypotheses remained and I could not separate them locally, because the local test runner is hook-blocked here: either the custom reporter never LOADS in the child, or it loads and no event reaches it before the SIGKILL. Rather than guess a third time, the artifact now answers it. The reporter appends a reporter:init line as its first action, before consuming anything, so the file's contents discriminate: absent means the reporter never loaded; init-only means it loaded and saw no test events; init plus events means it works. The diagnostic has a branch for each and, where the cause is genuinely unresolved, names both possibilities instead of picking one. Also passes the reporter as a file:// URL via pathToFileURL. Node documents the --test-reporter value as an import()-style specifier, and a bare absolute path is not a portable one — notably on Windows. That is a correctness fix whichever hypothesis holds, and it is a live candidate for the first. FIXED_OVERHEAD is derived by reducing over the actual argv strings, so the longer URL is accounted automatically. Verified by execution, not assumption: composing the reporter against an EMPTY event stream writes exactly one line, the init marker. That is the whole point of the marker, so it is pinned by a test rather than left to inspection. T1 stays red and untouched. Verification runs on the remote runner. Refs #4012
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.