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* fix(#2615): document the effortSurface axis in the host-integration matrix #2481 added `effortSurface` as the ninth negotiated `hostIntegration` axis and wrote documentation-sourced values into 18 descriptors, but never touched `docs/reference/host-integration-capability-matrix.md`. The matrix that ADR-1239 designates the cited source of truth had zero occurrences of the axis: no entry in the axes legend, and no row in any of the per-runtime tables. `src/host-integration.cts` states "every value is documented or explicitly 'undocumented'" — for this axis that was false for every runtime. Adds the legend entry (the `argv` / `none` / `undocumented` vocabulary, plus why there is deliberately no config-file member) and an `effortSurface` row to all 19 per-runtime tables. Every citation is carried over from #2481's own commit message, where the values were sourced: - claude argv -- `claude --help` documents `--effort <level>` - opencode argv -- `opencode run --help` documents `--variant` - codex argv -- `model_reasoning_effort` is a config.toml key, not a dedicated flag, so the generic `-c key=value` override is the only argv route (still argv) - 15 hosts undocumented -- their docs state no reasoning setting kimi-code is the nineteenth section (added by #2603 after #2481) and is the one runtime with no declared value. Its row and a Documentation-gaps entry record why rather than inventing one: Kimi Code documents `/effort` (alias `/thinking`), but only as an INTERACTIVE slash command — `-m, --model` is the only model-adjacent argv. Neither vocabulary member is accurate (`none` would deny a mechanism the host has, `argv` would claim one it does not expose), so closing that gap needs a vocabulary decision, which is a negotiation change and not a documentation one. The absent value already degrades closed exactly as the sentinel does. The regression test derives its runtime list from the registry rather than hardcoding it, so a runtime added later fails until its matrix row exists — the ratchet whose absence let #2481 add an axis with nothing catching the missing docs. Closes #2615 Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QT3ibz5qJuDuGqpTGRYVGf * docs(#2615): honest citations for the undocumented rows; fix the four stale 8-axis lists Two findings from the orthogonal review of the first commit. 1. The 15 `undocumented` rows shared byte-identical text — "searched the runtime's official docs (see Sources consulted above)" — which is weaker than this file's own convention ("no authoritative doc — searched: <url>") and, worse, implies a per-host targeted search that did not happen: each section's Sources-consulted list was gathered for OTHER axes and contains no CLI-reference or reasoning-effort source. The rows now say plainly what the finding is — an ABSENCE established by #2481's cross-host survey — and cite that survey rather than implying a URL was checked per host. 2. Four normative docs still described "the eight negotiated axes" and omitted effortSurface entirely. The worst of them is docs/how-to/add-or-update-a-host-integration.md — the maintainer's own guide for onboarding a host, whose Step 2 axis table would have a maintainer reproduce exactly the gap #2615 exists to close. Also fixed: docs/reference/host-integration-interface.md (which calls itself the normative reference and had no effortSurface row at all), docs/how-to/author-a-host-plugin.md, docs/registries/README.md ("**exactly** the eight … axes keys"), and CONTEXT.md's matching EoS-registry sentence. Deliberately NOT changed, because they are historical records rather than current contract: docs/whats-new-1.7.0.md and docs/FEATURES.md's 1.7.0 entry (effortSurface shipped in 1.8.0 via #2481 — rewriting them would falsify the release history), ADR-1239's pre-amendment body (already superseded by its own "Amendment (2026-07-21): effortSurface axis (#2481)"), and ADR-1016's "original eight axes", which refers to a different axis set entirely. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QT3ibz5qJuDuGqpTGRYVGf * chore(#2615): backfill changeset PR number (#2698) --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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, 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.