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A GSD verification gate resolves a project's test command and runs it. vitest defaults to WATCH mode in an interactive TTY — exactly where a user runs `gsd-execute-phase` — so a resolved `npm test`/`pnpm test` backed by vitest never exited and the orchestrator waited indefinitely. Recovery needed the user to manually prompt "something blocking?". Fix — one shared helper + a bounded, surfacing timeout on the test-command gates: - New pure module src/normalize-test-command.cts + `gsd-tools query normalize-test-command` verb: rewrites a resolved command to a best-effort one-shot form (direct vitest → `vitest run`; jest `--watch` → `--watchAll=false`; a package-manager `test` script whose package.json runner is watch-vitest → `CI=true` prefix; handles `--dir`; already-one-shot commands unchanged — never double-flagged). Named `normalize-test-command` (not `test-*`) so the file does not match node --test's default `test-*` discovery glob. - The three gates that HUNG or silently-continued route through that ONE helper and bound execution with `timeout $(config-get workflow.test_gate_timeout)` (new config key, default 600s): the regression gate (extracted to execute-phase/steps/regression-gate.md since execute-phase.md is size-frozen — it shrank 93528→93132; ABORTS on exit 124), the post-merge gate, and the audit-fix gate (previously an UNBOUNDED `eval`). All name watch/dev mode on 124. - verify-phase's gate was ALREADY bounded (a fixed `timeout 300`, not a hang), so it only gains the normalizer (so a watch runner exits fast) + a watch-mode hint on 124, staying under its frozen 40960-byte tier cap. Security hardening (review): the normalizer only rewrites a runner named as a standalone command TOKEN (so `run-vitest.js`/`make test-vitest`/paths are never mangled), is length-capped and uses only linear-time split-based scanning (no super-linear backtracking on an adversarial `workflow.test_command`), and reads package.json only when it is a regular file (never blocks on a FIFO via `--dir`). Config key `workflow.test_gate_timeout` (seconds, default 600) registered in the schema manifest + templates/config.json + docs/CONFIGURATION.md (mirrors workflow.cross_ai_timeout). New module registered in .gitignore, eslint ignores, inventory manifest/index. All 16 golden-install-parity fixtures + workflow size baseline regenerated for the changed shipped files; bin/lib is excluded from the parity manifest. Tests: tests/normalize-test-command.test.cjs (normalizer units incl. security hardening) and tests/test-gate-watch-mode.test.cjs (the three core gates route through the shared helper + configured timeout + exit-124 watch-mode hint; verify-phase asserted as normalize-only/already-bounded). tests/execute-phase-active-flags.test.cjs repointed at the extracted step; tests/planner-language-regression.test.cjs allowlist comment updated. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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
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.