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* chore(#2794): single-source the reviewer invocation contract Phase 1 of epic #2782 (ADR-2782). Introduces one core descriptor table as the declared contract for all 11 cross-AI reviewer lanes, and the DEFECT.GENERATIVE-FIX parity assertion the roster has never had. The lane contract lived in three unrelated surfaces — the roster, ~640 lines of hand-authored per-CLI bash in invoke_reviewers, and the write_reviews section headings — so cross-cutting fixes landed per-leg (#2494 and #2605 were the same empty-output defect filed twice). - src/review-lane-descriptor.cts: frozen table declaring per lane the slug, flags, probe, invoke shape, timeout floor, empty-output policy, REVIEWS.md section, evidence class, required binaries, prompt-budget key and handler. Field names track ADR-2782 D1/D2/D6/D7 verbatim so Phase 2 harvests the shape with no translation layer. It declares; it does not execute — invoke_reviewers iterates in Phase 5b. - checkReviewerLaneParity: bidirectional parity across descriptor, roster, invoke_reviewers legs and write_reviews sections. Forward-only would miss the failure it exists to catch (#2718 added a leg, #2781 was the drift). ADR-1517 instance headings are exempt per D8. - Legs carry an explicit <!-- reviewer-lane: slug --> marker; five non-lane bold labels share the bold-then-fence shape a heuristic matcher would key on. - ADR-2782 D4: an explicitly-flagged reviewer that cannot run is now an error in both the core module and the workflow prose that mirrors it. A code-only change would be unobservable — the module has no production caller; the workflow narrates the policy. Discovery paths (--all, review.default_reviewers) stay lenient. - Fixes the qwen leg, the last one discarding stderr to /dev/null. Two ADR-2782 D2 vocabulary widenings were forced by surveying the shipped legs: promptChannel 'none' (CodeRabbit is fed no prompt) and outputChannel 'file-arg' (Codex writes via -o and discards stdout, #1698). Both are additive and closed; Phase 2 owns the validator. Closes #2690 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2794): make the parity checker total and pin the lane slug grammar Findings from the orthogonal review passes. Spec axis — the module claimed its vocabulary tracked ADR-2782 D1/D2 "verbatim" while diverging in three undisclosed ways, which is the translation layer Phase 2 was supposed to be spared: - `transport` moves from `invoke.transport` to the LANE level, a sibling of `probe`/`invoke`, exactly as D1's manifest example places it. The nested form read better as a TS discriminated union; the union is now discriminated at the lane level instead, which costs nothing. - The header and the CONTEXT.md glossary now enumerate all FOUR widenings (adding `outputArg` and `flags[]`), not two. Standards axis — CLAUDE.md requires a fast-check property test for a parser, and `checkReviewerLaneParity` parses markdown for markers and headings. Adding one found two real defects that the hand-written matrix missed: - NOT TOTAL: a malformed descriptor entry threw on `lane.flags` iteration, contradicting the module's own "never throws" claim. Every field is now narrowed from `unknown` at the trust boundary and reported as MALFORMED_LANE / INVALID_SLUG. This matters because Phase 2 feeds this function third-party overlay data, and a parity gate that crashes is indistinguishable from one never run. - SILENT GRAMMAR MISMATCH: LEG_MARKER_RE captures only [a-z0-9_-], so a slug outside that class was unmatchable — its marker could be present and correct and the scan would still report LEG_MARKER_MISSING forever. LANE_SLUG_RE now pins the grammar and a violating slug is reported INVALID_SLUG. A loud named violation beats a silent miss. Generators are document-shaped, not writer-seeded (CONTRIBUTING #2371): seeding from the module's own matchers could only produce documents those matchers already recognize. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2794): register the new bin/lib module in the ESLint ignore list The remote runner caught this; lint:ci did not, because the invariant lives in the test suite rather than the lint chain: tests/repo-invariants.test.cjs "each bin/lib/*.cjs is linted xor ignored according to migration state" -> tsc-generated bin/lib modules not yet added to ESLint ignore list: review-lane-descriptor.cjs Adding a src/*.cts module ripples to six surfaces (.gitignore, the ESLint ignore list, docs/INVENTORY-MANIFEST.json, the CONTEXT.md glossary, the capability/inventory manifests, and any size baseline). The other five were covered; this was the miss. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * docs(#2794): amend ADR-2782 D1/D2/D8 with the vocabulary Phase 1 surfaced Building the Phase 1 descriptor table against all eleven shipped legs is the first time every lane's contract was written in one place, and it surfaced four cases the ADR's original survey did not cover. Amending the design lock rather than diverging from it, so Phase 2 (#2795) implements the manifest validator against the amended vocabulary instead of rediscovering the gaps. All four are additive widenings of closed enums; no decision reverses: - D2 promptChannel gains `none` — coderabbit is fed no prompt at all, it reviews the working-tree diff. - D2 outputChannel gains `file-arg` — the ADR called a file-writing lane a shape a real CLI *could* take; codex already is one, writing via -o/--output-last-message and discarding stdout (#1698). - D2 gains `outputArg`, required iff file-arg — knowing the review lands in a file is useless without the argument naming it. - D1 `flag` becomes `flags[]` and D8's uniqueness flattens across lanes — antigravity is selected by both --antigravity and --agy, which a single-valued field cannot express. This is the same evidence path that produced the openai-http transport: the vocabulary widens on a lane that exists, under review, never on speculation. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#2794): backfill changeset pr number to 2820 --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
GSD Core documentation
Documentation is organised into four quadrants: tutorials help you learn by doing, how-to guides solve specific tasks, reference states authoritative facts, and explanation explores concepts and design decisions.
Language versions: English · Português (pt-BR) · 日本語 · 简体中文
Tutorials
- Your first project — install to first shipped phase, one guaranteed path
- Onboarding an existing codebase — bring GSD Core to a brownfield repo
- Build your first capability — author a tiny declarative capability and watch it act in the loop
- Install your first capability — install a third-party capability end-to-end: consent, verify, check for updates, remove
How-to guides
- Install on your runtime — runtime-specific install steps for all 16 supported runtimes
- Install a minimal GSD and add skills later — install only the core skills, then grow the surface with profiles and
/gsd:surface - Attach a plugin-provided skill to a GSD agent — use the
global:plugin:skillentry form to load Claude Code plugin skills into agent prompts - Discuss a phase — capture implementation decisions before planning begins
- Resolve edge-coverage findings — turn the spec phase's surfaced domain-boundary edges into covered, dismissed, or backstopped spec decisions
- Resolve prohibition findings — turn the spec phase's surfaced must-NOT constraints into resolved, dismissed, or deferred spec decisions
- Plan a phase — run research, decompose work, and verify plan quality
- Execute a phase — run plans in parallel waves with fresh-context subagents
- Verify and ship — walk through completed work, diagnose failures, and create the PR
- Run phases autonomously — use autonomous mode for unattended phase execution
- Handle quick and fast tasks — use
/gsd-quickand/gsd-fastfor ad-hoc work outside the phase loop - Configure model profiles — switch between quality, balanced, and budget model tiers
- Set up cross-AI review — configure a second AI to review code produced by the primary agent
- Work in parallel with workstreams — run independent lines of work simultaneously using workstreams
- Isolate work with workspaces — use workspaces to sandbox experimental or risky changes
- Debug a failed execution — diagnose and recover from broken or incomplete phase execution
- Spike and sketch — use
/gsd-spikeand/gsd-sketchfor exploratory work before committing to a plan - Design a UI phase — use the UI phase loop for frontend and visual work
- Develop a Capability for GSD 1.5+ — add feature Capabilities, hook fragments, and registry entries
- Add or update a host's integration — set a host's documentation-sourced
runtime.hostIntegrationaxes (ADR-1239 Phase A), with theundocumentedsentinel rule - Turn a capability off (and keep it off) — disable a capability via the surface, or gate individual hooks off without removing the capability
- Drive GSD from a tracker issue — start a phase from a GitHub, Linear, or Jira issue
- Migrate from GSD 2 — upgrade an existing GSD 2 project to GSD Core
- Update GSD — re-run the installer to pick up the latest release
- Clean up get-shit-done-cc — remove leftover old-package artifacts that cause a spurious
⬆ /gsd:updateindicator after migrating to@opengsd/gsd-core - Fix the worktree base-mismatch (exit 42) error — resolve the branch-divergence condition that halts parallel phase execution
- Recover and troubleshoot — fix common problems, rebuild context, and uninstall
Reference
- Commands — every command with flags and examples
- Configuration — full config schema, model profiles, git branching strategies
- CLI tools —
gsd-tools.cjsprogrammatic API for workflows and agents - Features — complete feature index
- Inventory — installed skills and surface map
- STATE.md schema — field-by-field reference for
.planning/STATE.md - CONTEXT.md schema — field-by-field reference for
.planning/phases/<N>/CONTEXT.md - PLAN.md schema — field-by-field reference for
.planning/phases/<N>/PLAN.md - Planning artifacts — all
.planning/files and their roles - Review and verification capabilities — code review, security, and Nyquist capability ownership and hook contracts
- Capability matrix — generated catalogue of every capability's role, tier, extension points, hook kinds, and
engines.gsd - Capability manifest — the full
capability.jsonschema and validation rules gsd capabilitycommand — install / update / remove / list reference for third-party capabilities
Explanation
- Context engineering — how context rot forms and how GSD Core prevents it
- The phase loop — design rationale for the Discuss → Plan → Execute → Verify → Ship cycle
- Multi-agent orchestration — how subagents are spawned, scoped, and coordinated
- Security model — trust boundaries, permissions, and safe automation
- The capability trust model — why third-party capabilities are gated by consent + integrity + reversibility, not a sandbox
- How overlay capabilities compose — why first-party always wins and how the loader resolves precedence, conflicts, and fail-open load-failure warnings
- Architecture — system architecture, agent model, and data flow
- The Embeddable Orchestration System — one public, versioned contract for embedding GSD across many hosts
- Discuss modes — assumptions mode vs interview mode for
/gsd-discuss-phase - Context monitoring — context window monitoring hook architecture
- Issue-driven orchestration — recipe for driving GSD from a tracker issue using existing primitives
Related
- What's new in 1.7.0 — curated highlights of the 1.7.0 release
- Root README — landing page, quickstart, and documentation overview
- Changelog — release history