9f57fa43ed
* docs(#3240): record the codex passive/session-only model posture ADR-2313 locks the install-time contract for epic #2313: omit the per-agent model from generated ~/.codex/agents/<agent>.toml by default so the agent inherits the always-available Codex session model, embed one only for an explicit real-Codex model_overrides pin, and keep model_reasoning_effort coupled to a pinned model (#838). Supersedes #2517's per-tier embedding on the default path only. Also records the reader/writer boundary the downstream phases need (strict writer, liberal-but-visible readers, never partially rewrite an unparseable .toml), the migration path for API-key Codex users, and the Phase 5 the coverage gate found unowned. Amends ADR-1239 with a dated section: its effortSurface amendment described this ADR as "not yet written", and the install-time vs invocation-time boundary is now stated from both sides. Docs-only. The posture is not real until Phase 1 (#3241) merges. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3240): remove the ADR index count cells that race between PRs The generated region of docs/adr/README.md carried three numeric cells — a per-group `### <heading> (N)` and a `_N ADRs._` footer — that every ADR-adding PR must rewrite. Two PRs adding different ADRs merge their table rows cleanly, since those are distinct lines, but both rewrite the same count lines, so whichever lands second gets a green local `gen-adr-index.cjs --check` and a red CI one: CI evaluates the PR merged with next, where the count reflects both ADRs. That is not hypothetical. It reddened this PR: ADR-2313 regenerated the index at 75 while #3249 landed ADR-3247 concurrently, making the merged tree 76. The counts carry no verification value — --check regenerates and diffs the whole region regardless — and are derivable by reading the table, so they are removed rather than tolerated. Loosening --check to ignore them would have let genuine staleness through. This is the shared-mutable-cell problem CHANGELOG.md and the drift acks already solved with per-PR fragment files; here removing the cell is enough. The regression test locks the invariant rather than the symptom: adding an ADR only INSERTS lines, so render(N) is a line-subsequence of render(N+1). That is the property that makes concurrent PRs merge, and unlike asserting the absence of one count format it fails for a count reintroduced in any shape. Covered at append, lowest-id, middle-id, empty-corpus, new-status-group, and hazardous-title positions; each names the pre-fix line that would have failed it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Opus 5 <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
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.