* feat(#1681): ADR-1239 Phase C-2 — gsd-mcp-server bin entry + lifecycle test [slice 3b] Phase 4 slice 3b (closes #1681). The companion MCP server bin entry so any MCP-consuming host connects via 'npx gsd-mcp-server' (or its bin on PATH) and gets GSD command (point 1) + state IO (point 5) with no bespoke plugin. - gsd-core/bin/gsd-mcp-server.cjs: #!/usr/bin/env node shim requiring ./lib/mcp-server.cjs + runServer({stdin, stdout}); non-zero exit on fatal error (justified n/no-process-exit disable). Mirrors gsd-tools.cjs. - package.json: add 'gsd-mcp-server' bin entry. - tests/gsd-mcp-server-bin.test.cjs: 3 process-lifecycle tests — initialize + tools/list round-trip + clean exit, malformed-line -> parse error + server keeps running, empty stdin -> clean exit. Synchronous spawnSync (bounded; server exits on stdin EOF, no orphan). Phase 4 trust-gate (#1806) + loader wiring (#1808) + server module (#1809) + this bin/lifecycle slice = all of #1681's deliverables. Concrete host binding -> Phase 5 (#1682). npm-integrity + eslint + security + inventory all clean. * docs(#1681)+chore(changeset): how-to for the companion MCP server + Added fragment docs/how-to/connect-gsd-mcp-server.md — Diataxis how-to guide for connecting any MCP-capable host to gsd-mcp-server: goal-oriented flow (add config → restart → verify), real-world per-host conditionals, troubleshooting, and a trimmed reference table. Explanation/reference linked out (ADR-1239, capability-trust- model) per Diataxis boundary rules rather than mixed in. .changeset/humble-seals-rest.md — type: Added (first user-reachable surface of the epic: a new bin command). The how-to doc satisfies the docs-required gate. * fix(#1681): move gsd-mcp-server shim to top-level bin/ (out of the runtime-copied tree) The shim at gsd-core/bin/gsd-mcp-server.cjs was inside the tree the installer copies into every runtime config dir, so it leaked into all 16 runtimes and broke golden-install-parity. The MCP server is a PACKAGE bin the host spawns (npx gsd-mcp-server), not a per-runtime artifact — so it belongs at top-level bin/ alongside install.js (which is also never copied into a runtime config). - gsd-core/bin/gsd-mcp-server.cjs -> bin/gsd-mcp-server.js (require path now ../gsd-core/bin/lib/mcp-server.cjs). - package.json: bin entry -> bin/gsd-mcp-server.js. - tests/gsd-mcp-server-bin.test.cjs: SHIM path updated. - eslint.config.mjs: add bin/gsd-mcp-server.js to the bin/install.js block (drops the n/no-process-exit disable — the n plugin isn't loaded for that block, so the disable referenced an undefined rule). golden-install-parity 16/16 restored; lifecycle + unit tests green; eslint 0; lint:ci all ok.
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, Gemini 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, Gemini 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, Gemini 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 your first project:
/gsd-new-project
New here? Follow Your first project for a guided walkthrough from install to first shipped phase.
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
License
MIT License. See LICENSE for details.
Claude Code is powerful. GSD Core makes it reliable.