Adversarial pre-submission review found the injected-runCheck tests masked a non-functional real runner. Fixes: - BL-01 (false green on vacuous test): the node-test runner now parses the TAP summary and requires a NON-VACUOUS pass (>=1 test, >=1 pass, 0 fail) AND a reported test named distinctly from the file — node --test counts an empty file as one passing test, so counts alone could not catch it. - SF-01 (lint anchor never greened): the lint-rule runner now runs the project eslint as --format json and filters by ruleId, so plugin rules (local/*) load via the flat config — bare --rule cannot load a plugin. local/no-source-grep now genuinely greens (covered by a real, non-injected test). - BL-02 (tautological fail-first): the runner no longer echoes the caller's failFirst as if confirmed. failFirst is documented as caller-ATTESTED; the producer requires attestation + a genuine non-vacuous pass. Machine-proven fail-first (needs a violation fixture) is flagged as a tracked follow-up in ADR-550, the changeset, FEATURES, the reference doc, and verify-phase. - SF-02: added real-runner end-to-end tests (no injected runCheck) + pure, exported parse/filter helpers (parseNodeTestSummary, tapTestNames, eslintJsonHasRule, eslintFileResultCount) so the shipping branches are mutation-pinned. - NIT-01/02: LOCATE guard rejects empty-string rule and unknown kinds. - Hardening: spawn checks with NODE_TEST_CONTEXT/NODE_OPTIONS scrubbed so an ambient test-runner context cannot corrupt a verify-time result. - Docs reconciled to the shipped behavior (no 'confirms fail-first' overclaim).
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.