197d6bffe2
* docs(#894): ADR-894 Capability declaration format + registry generation ADR-857 rollout phase 3a (design-only). Resolve ADR-857's deferred open question — the on-disk Capability declaration format — as a reviewable design ADR before any generator code. Specifies: the capabilities/<id>/capability.json folder layout (migration-staged ownership — declarations reference existing stems until the phase-6 move); the capability.json schema for role:feature (skills/agents/hooks/federated config/ loopHooks) and role:runtime (the six closed projection-primitive axes); the 12 named Loop Extension Points; the gen-capability-registry.cjs generator design (validation + cross-capability invariants + --write/--check drift gate, mirroring gen-inventory-manifest); the generated capability-registry.cjs shape (by-id / by-skill / by-loop-point indexes + requires-closure); and a full worked example (the UI capability: ui-phase + ui-review + agents + config + two loop hooks). No code — design artifact only; the generator build, federated config loader (3b), and loop seam (3c) implement against this contract. Closes #894 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * docs(#894): amend ADR-894 with grilled capability declaration format Stress-tested the declaration format before merge; the format changed materially. Amendments: - loopHooks[] -> three typed arrays (steps/contributions/gates), each with its own shape (step: ref+produces/consumes; contribution: fragment+into agent-role; gate: check+blocking). - Add the Loop Host Contract (§3): each step publishes its points, agent roles, and core artifacts so the generator validates hooks against reality, not trusted strings. - requires = capability ids only (host implicit); add tier-monotone invariant; drop the requires:["plan"] error from the example. - Config federation = atomic move: a migrated key leaves the central schema in the same PR; presence in both is a collision (invariant stays). - One registry, role-partitioned indexes (feature indexes vs runtimes index). - Rework the UI worked example to the split-array shape (2 steps + 1 gate) + a contribution illustration. Adds a "Grilling amendments" section recording the six changes. * docs(#894): amend ADR-894 with round-2 grilling (operational reality) Second design-grill round, folded in before merge: - Loop Host Contract is GENERATED from structured workflow markers (<loop-point>/<agent-role>/<loop-artifact>) via gen-loop-host-contract.cjs — it can't drift from the real workflows. - Hook activation `when`: cheap deterministic config-level gating evaluated by loop.render-hooks; deeper phase-context applicability self-gates inside the dispatched skill (no phase-context vocabulary to keep honest). - `tier` is the source of install-profile + cluster membership; profiles and clusters are generated from tier + requires-closure (/gsd:surface operates on capabilities) — collapses ADR-857's multiple toggle systems. - Gate `check` = query | declarative-predicate | agentVerdict; agentVerdict is forced advisory; only deterministic checks may block. - byLoopPoint ordering is materialized in the registry; render-hooks filters the active set + renders. Same-capability hooks degrade gracefully when an entry step self-gates. - Rollout: registry-only until atomic per-feature cutover (no double-execution with still-inlined workflow features). Updates the Grilling amendments / Consequences / Alternatives / Open questions sections; reworks the UI example with `when`. --------- Co-authored-by: Claude Opus 4.8 <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, Gemini 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, 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, 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.