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* feat(#2401): ground <automated> verify-command paths and inherit prior-phase commands Adds a deterministic resolvability probe over each PLAN.md <automated> verify command and surfaces the nearest prior phase's proven commands to the planner at every context window. - src/verify-command-grounding.cts: recognizer (not a shell interpreter) that grounds a leading cd <literal> chain and npm --prefix <literal>, and reports unresolvable rather than guessing. Never executes command text. - gsd-tools check verify-command-paths <N>: per-phase probe, wired into plan-phase.md before the plan-check pass. - init.plan-phase gains prior_verify_commands, ungated by context_window. - gsd-plan-checker: new Verify Command Path Resolvability dimension that reports the failing target and never prescribes a replacement. Also fixes first-match-wins prefix bucketing in scripts/lint-test-file-count.cjs (readdir order is not stable across platforms, so a module whose name extends another's with a hyphen bucketed differently on Linux than on macOS). Closes #2401 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2401): ground the canonical --prefix form, quoted paths, and absolute cd resets Independent review found three defects in the recognizer: - npm --prefix DIR run SCRIPT never reached the script-existence check, because the pattern required npm and run to be adjacent. That is the form the docs tell planners to prefer, so script_missing never fired for it. The prefix flag and its value are now stripped before matching. - --prefix captured with \S+, so a quoted path containing a space was truncated to a stray opening quote and reported as a missing directory - a false blocker, worse than the bug this feature fixes. The capture is now quote-aware. - A chained cd whose later segment was absolute concatenated instead of resetting, producing a nonsense path and another false blocker. The fold now resets on an absolute segment. Also replaces the bespoke phase-directory regex with the canonical phase-id helpers. Real phase directories are NN-slug, not phase-N-slug, so the prior-command harvest matched nothing outside its own fixtures and the planner-inheritance half of this feature was dead code. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * refactor(#2401): source task blocks from the canonical sectionizer The module carried its own copy of the <task>-block grammar - a fourth hand-rolled mirror of the one markdown-sectionizer owns. verify.cts keeps its copy only because it needs the type= attribute the canonical helper discards; this module never reads that attribute, so it can share the owner outright instead of adding a test around a copy. extractAutomatedCommands now takes task bodies from extractTaggedBlocks and the out-of-task remainder from stripTaggedBlocks. A task-grammar parity test pins the attributed task-name set against the canonical helper across six awkward task shapes. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2401): extract agent-file overflow to references and repair the property arbitrary The remote matrix run came back red with 19 failures, four root causes: - agents/gsd-plan-checker.md and agents/gsd-planner.md both blew the 49152 agent cap. Their bodies move to gsd-core/references/, leaving @-reference stubs, per the documented overflow pattern. - The new checker dimension invoked gsd_run before the canonical preamble that defines it. The call is deleted outright: plan-phase.md already runs the probe and hands the result in as {VERIFY_PATHS}, so the dimension consumes that rather than re-running anything. - fc.fullUnicodeString does not exist in fast-check 4.8.0. Replaced with fc.string({ unit: 'binary' }), which covers the same 0000-10FFFF range. - Three runtime-loaded files grew; acknowledged in the existing ack fragments that already own those bare filenames, since two ack sources may never name the same path. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test(#2401): regenerate golden install-tree fixtures for the new references Adding two files under gsd-core/references/ changes what the installer emits into every runtime's tree, so all 19 golden install-parity fixtures went stale. Regenerated with npm run gen:install-tree; the delta is exactly the two new reference paths per runtime, no removals. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#2401): backfill changeset pr number to 3678 * fix(#2401): treat ~ as a home expansion only at the start of a path Windows CI caught this on both shards; the Linux-only remote matrix cannot see it. The dynamic-path refusal rejected ~ anywhere, and a GitHub Windows runner's tmpdir is an 8.3 short name - C:\Users\RUNNER~1\AppData\Local\Temp - so a valid absolute Windows path came back unresolvable/dynamic_path. This was a production bug, not a test artifact: any Windows user whose project path carries an 8.3 short name, or any literal ~, silently lost the probe entirely - every command degrading to unresolvable with no explanation. ~ is a home expansion only at the start of a path; elsewhere it is an ordinary literal. The check is now split: $, backtick, *, ? and newline stay refused anywhere (substitution and globs, and the glob characters are illegal in Windows path components regardless), while ~ is refused only leading, tolerating one leading quote since the check runs before quote stripping. The prior tests only caught this on Windows because only Windows puts a ~ in tmpdir. Four new tests pin it on every platform via a fixture directory literally named RUNNER~1. 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.