* feat(#1689): per-plan agent_hint executor routing Option A per-plan specialist routing: a plan with an `agent_hint:` frontmatter field is dispatched to that subagent instead of gsd-executor when it resolves on the active runtime; absent/unresolved/disabled falls back to gsd-executor (byte-identical). Default-on via workflow.agent_hint_routing. - src/phase.cts: parse agent_hint into the plan-index JSON (plan_json.agent_hint) - agent-install-check.cts: resolveAgentHint() reuses getAgentsDir + runtime filename variants; probes project + global agent dirs; fails closed; rejects path-traversing names - gsd-tools.cjs: 'resolve-agent' query route (fail-closed to gsd-executor; --raw/--json) - execute-phase.md: lean per-plan reference + {EXECUTOR_TYPE} placeholder (host stays under the ADR-857 Phase 6 byte ceiling) - execute-phase/steps/per-plan-executor-routing.md: resolution logic (Agent()-based dispatch; advisory on orchestrator-worktree) - config: workflow.agent_hint_routing (validKey, default-on via SCHEMA_DEFAULTS, boolean validator) - docs (CONFIGURATION.md, plan-md.md), changeset, tests/agent-hint-routing-1689.test.cjs (17 tests) * chore(#1689): backfill changeset PR number (#3417) * chore(#1689): regenerate install-tree fixtures for new workflow fragment * chore(#1689): ack deliberate execute-phase.md growth (agent_hint routing) * test(#1689): SPAWN contract allows parameterized subagent_type placeholder agent-frontmatter's spawn-type checks scanned subagent_type="..." as a concrete agent name. execute-phase now uses subagent_type="{EXECUTOR_TYPE}" (a runtime placeholder resolved via resolve-agent, default gsd-executor). Skip {TOKEN} placeholders in both the known-type and <available_agent_types> checks; execute-phase still lists the built-in roster incl. gsd-executor. * fix(#1689): CI conformance for the routing fragment - per-plan-executor-routing.md: add the canonical runtime-launcher preamble to its gsd_run block (runtime-launcher-parity #373), matching sibling step fragments. - agent-install-check.cts: drop a literal ~/.claude/agents path from the resolveAgentHint JSDoc so it does not leak into the compiled engine .cjs (cline install leak guard). --------- Co-authored-by: sim <sim@local>
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.