Tom Boucher fdd5e401eb feat(architecture): [EoS/claude] drive claude through the imperative adapter + descriptor-driven hostBehaviors (#2086)
Fold Claude Code's install/uninstall onto the Embeddable Orchestration System
(ADR-1239 Phase D). claude is GSD's tier-1 reference host, but its install path
was still driven by 13 hardcoded `runtime === 'claude'` string-equality branches
scattered across bin/install.js rather than the public Host-Integration Interface.

- Route install()/uninstall() through `createImperativeAdapter({runtime})` — the
  adapter delegates to the SAME installRuntimeArtifacts/uninstallRuntimeArtifacts
  engine calls, so output is byte-identical (proven pre/post, both scopes).
- Replace all 13 `runtime === 'claude'` / `runtime !== 'claude'` branches with
  descriptor-driven `runtime.hostBehaviors` lookups on capabilities/claude/
  capability.json (attributionSource, authorsCanonicalWorkflow, localInstallStyle,
  permissionsSchema, settingsFileByScope, sourceMarkerFile, agentFrontmatterExtensions,
  ownsClaudePaths, nativeModelAliases, skillsGlobalOnboarding). Behavior is
  identical; the brittle string-equality coupling (the add-a-host tax) is gone.
- Single-source the scattered literal 'claude' defaults/rosters behind DEFAULT_RUNTIME.
- Extend golden-install-parity to assert the claude LOCAL legacy layout is
  byte-identical too (AC1 "both scopes"); exclude the platform-varying
  settings.local.json (same reason settings.json is excluded).
- New tests/claude-imperative-reference.test.cjs: adapter kind, programmatic-cli
  profile, fail-closed negotiation on a corrupted/partial descriptor, and an AC2
  source guard that no `runtime === 'claude'` branch remains.

No user-visible install-output change (internal architecture only).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-08 13:31:53 -04:00

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.

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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:

  1. Discuss — capture implementation decisions before anything is planned
  2. Plan — research, decompose, and verify the plan fits a fresh context window
  3. Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
  4. Verify — walk through what was built; diagnose and fix before declaring done
  5. 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

Star History Chart

License

MIT License. See LICENSE for details.


Claude Code is powerful. GSD Core makes it reliable.

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