693f12ad56
* refactor(#3187): give state field extraction one canonical owner stateFieldValue in state-document.cts becomes the single owner of the #1760 frontmatter-then-body fallback chain. The new whole-repo guard found 14 independent re-derivations where the epic scoped 5, all now routed through it: cmdStateSnapshot (11), cmdStatePrune (2) and smart-entry fmScalar (1). state validate was a gate that could not fail. Every warning it could emit sat behind a phase resolved without the frontmatter tier, so a STATE.md whose phase lives only in frontmatter skipped the drift scan entirely and returned valid:true. It also read unstripped content, letting a frontmatter status: key shadow the body field (#1255 class). Both fixed; output gains a scope field so could-not-look stops being output-identical to looked-and-clean. Verified on the remote runner. * docs(#3187): document the state validate scope field and its reason codes Adds docs/how-to/interpret-state-validate-results.md so a reader can tell nothing-to-report from could-not-look, updates the COMMANDS.md and USER-GUIDE.md entries, corrects the CONTEXT.md glossary overstatement about Current Position sole ownership, and drops the changeset fragment. * fix(#3187): close three drift-guard evasion shapes and test the refuse path The isolated adversarial review found the ladder detector was evadable by ordinary reformatting, not just deliberately: a member or computed operand (fm.key / fm[key]) missed the bare-identifier backreference, a swapped tier order missed a hardcoded number-then-boolean sequence, and a ladder wrapped across lines missed single-line detection. All three now caught, each with its own test plus a proven boundary control. The frontmatter-parse refuse path on the destructive complete-phase route was unreachable and therefore untested. It is now driven by an injected parse failure and asserts STATE.md is byte-identical after the refusal, rather than shipping untested defensive code on a path that rewrites user state. Verified on the remote runner. * fix(#3187): widen the drift guard to the prompt layer and disclose tier-2 changes The code-review spec axis found the guard's scan surface was src/ only, which is Decision 4(d)'s forbidden allowlist one directory wide - and it had a live miss: gsd-core/workflows/smart-entry.md tells an agent to read status from frontmatter or the body, a prose expression of this same chain. The surface now covers the prompt layer. That one site carries a permanent written exemption rather than a ratchet: it is the gsd-tools-is-down fallback, so it cannot call the owner by construction, and a ratchet would imply removable debt that does not exist. Two tier-2 output changes shipped undisclosed and are now named in the changeset and docs: complete-phase's idempotency guard consulting frontmatter, and the workstream inventory resolving frontmatter-only fields. docs/COMMANDS.md gains a state complete-phase entry, which it never had. Also records Amendment 5 on ADR-3180, extracts the duplicated frontmatter-parse block the epic's own thesis forbids, and re-points two assertions from free-form warning prose onto the structured drift object. Verified on the remote runner. * chore(#3187): backfill changeset PR number pr:0 placeholder replaced with the real PR number now that #3283 exists. --------- Co-authored-by: sim <sim@local>
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.