Surfaced by an /adr-phase-coverage audit of epic #3473 after its last sub-issue merged. §8 is the epic's declared source of truth - "where this section and the code disagree, the code is the defect" - and line 136 defines a per-rule status vocabulary. Not one of the nine rules was ever advanced past its pre-implementation status. The word Enforced appeared exactly ONCE in the document: in the sentence that defines it. Three rules read "Required - phase unassigned" for work that Phases 5, 7 and 8 demonstrably delivered, so a reader auditing coverage today would conclude three of the nine contract rules had no owner. That is the orphan shape this epic exists to eliminate, sitting in the epic's own contract, and it is the same defect class as B6's guard ledger: a status column is a claim, and it was false. Flipping all nine to Enforced would have repeated the mistake inverted. Decision 2 says a declared policy with no executor is a loud failure, so Enforced asserts an executor EXISTS - and measurement found the nine are not equally enforced. The vocabulary is now three values: Enforced a standing guard wired into lint:ci or CI fails the build; a new wrong call site cannot land Enforced (structural) the wrong call site is unrepresentable Shipped - test-covered delivered and regression-tested, but NO standing guard; a regression in covered code is caught, a new wrong call site elsewhere is not Measured per rule, with the executor cited: 8.1 Enforced lint-vendored-deps + no-external-require-in-bin 8.2 Enforced (partial) phase-enumeration-drift covers the sentinel arm; the #3357 resolver arm is test-covered only 8.3 Shipped NO guard for slug or marker re-derivation 8.4 Shipped structural for argv; no guard for the general rule 8.5 Shipped the delivering change added zero guard scripts 8.6 Enforced (structural) the transaction type; state-write-path-drift 8.7 Shipped structural via reconcileReportedFields; no guard 8.8 Enforced gen-state-md-docs --check in lint:generated-sync 8.9 Enforced (prospective) lint-fix-has-regression-tests fires on NEW fix commits; it does not assert the 19 children are covered. 17 of 19 have a test citing their number; #3364 and #3812 have none - a text match, not proof the behavior is uncovered, but not evidence it is covered either The third status value is not a euphemism for done. It names precisely where this epic's own thesis - make the wrong call site unrepresentable - is NOT yet achieved. §8.3 and §8.5 are the thinnest: nothing today stops a twelfth inline slug copy or a second silent swallow. Also corrects a claim this ADR made three days ago and #3977 has since overtaken. The ledger amendment concluded #3426/#3239 "need new detectors". The measurement behind that was right - the glob widening structurally could not reach them - but the prescription was not the best available: #3977 rerouted the test's parsers onto the ADR-2143 seam, so there is no ad-hoc parse left for a detector to find. Removing the violation beat teaching the rule to see it. Both issues are CLOSED; the roster row and the amendment now say so, and say why the earlier conclusion should not be built on. Closes #3984 Co-authored-by: sim <sim@local> Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
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, 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.