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* chore(#2797): federate reviewer config keys off the central schema Phase 4 of epic #2782 (ADR-2782 D9, config half). Runs AFTER 5a per the ADR's swap amendment: a federated config slice lives inside a capabilities/<id>/capability.json, and three of the five key families had no capability directory until 5a created them. Four key families move to the lanes that use them; the central-schema removal and the federated addition land in this one commit because the exclusivity invariant fails the build on a key present in both. review.max_prompt_tokens, review.default_reviewers and review.reviewer_instances describe policy ACROSS lanes and stay central. Two things the issue did not name, both found while building it: 1. THE EXCLUSIVITY GATE WAS BLIND TO PATTERNS. It compared federated keys against manifest.validKeys only, and two of the four families (review.models.<slug>, review.max_prompt_tokens_per_reviewer.<slug>) were pattern-backed. That is not cosmetic: isCentralConfigKey consults those patterns and mergeFederatedConfig skips every key for which it returns true, so declaring a slice while the pattern survived would have shipped an INERT slice behind a green gate — the exact half-migrated shape the invariant exists to prevent. The gate now loads the patterns from the same manifest the runtime reads. 2. AN UNSET PER-LANE BUDGET NOW RESOLVES TO 0, NOT NOT-FOUND, because a federated key always resolves to its declared default. The three fallback guards in review.md checked only empty-or-"null", so a user who set the GLOBAL review.max_prompt_tokens would have silently lost trimming on the HTTP lanes. The guards now treat 0 as unset. D9 says review.models.<slug> is owned by "the lane whose slug it names". That is false for one lane: the shipped key is review.models.agy while the slug is antigravity. Ownership follows the lane; the key name is preserved, because renaming would break every config that sets it. Existing tests updated rather than left asserting the old world: config-get on a cleared federated key yields empty instead of not-found (what #2046 actually protects — never persisting the literal "null" — is unchanged and still asserted); the config-schema dynamic pattern representative moves to reviewer_instances; the prototype-pollution guard case moves to a surviving dynamic prefix so alert #26 keeps its coverage, with a new case asserting the old key is now rejected earlier; and Phase 2's harvest-widening inertness assertion becomes an ownership assertion, since Phase 4 is what consumes it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2797): use a -1 sentinel so an explicit per-lane budget of 0 survives A federated config key always resolves to its declared default, so an unset per-lane prompt budget needed a value the workflow could treat as 'not configured'. The first cut used 0 — which is wrong: 0 is already a LEGITIMATE per-lane budget meaning 'do not trim this lane' (the early-return guard in prepare_trimmed_prompt_for_reviewer). Treating it as unset would have silently switched a user who deliberately disabled trimming for one lane onto the global budget. The sentinel is now -1, which is not a valid token budget, so all three states stay distinguishable: unset falls back to global, an explicit 0 disables trimming for that lane, and an explicit N is used. Locked by three CLI round-trip tests. Surfaced by the isolated security reviewer before it crashed mid-run; verified independently against the shipped trim guard rather than taken on trust. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2797): update central-registration assertions and stay under the review.md cap The remote runner caught both; my local sweep missed the files. 1. tests/plan-review-convergence.test.cjs asserted the three local-server host keys are in VALID_CONFIG_KEYS. They are federated to their lane capabilities now, and the exclusivity invariant forbids a key living in both places. What #2306-local actually protects is that config-set ACCEPTS them, so that is what is asserted — via isValidConfigKey, the predicate config-set itself uses, which spans central and federated. A second assertion pins federated ownership, so a silent reversion back to the central schema fails too. 2. review.md exceeded the LARGE tier hard cap (62583 > 61440). That cap is a red line, not a budget to raise. The three per-lane budget guard comments were near-identical; condensed to one terse line each. 61371 bytes, 69 to spare. Real extraction to workflows/review/modes/ is Phase 5b/6 work. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2797): fail closed on a broken config-schema manifest; reconcile stale docs Isolated security review findings. MAJOR — loadCentralConfigPatterns failed OPEN. It swallowed a JSON parse error and returned [], while its sibling loadCentralConfigKeys, reading the SAME file, writes to stderr and throws ExitError(1) on that identical failure class. Fail-open here defeats the gate this function exists to feed: with zero patterns, validateCrossCapability's pattern-collision check silently passes and an inert federated slice ships green. It was masked in the one production call site only because loadCentralConfigKeys runs first against the same path — a coincidence of ordering, not a guarantee, and this function is exported and called standalone. The two now share a contract: ENOENT is the legitimate absent case, anything else throws loudly. A single unparseable PATTERN is still skipped, which degrades to "checked less" rather than blocking every build. The branch had zero coverage; it now has two tests (malformed JSON, EISDIR). MINOR — docs/CONFIGURATION.md still listed review.models.qwen and review.models.cursor as settable, ~770 lines below this PR's own new Ownership section. Those lanes take no model flag, so they declare no model key and config-set now rejects them. Rows removed; the missing review.models.agy row added; the per-reviewer budget row corrected to name only the lanes that own a budget key, and to document that a per-lane 0 disables trimming for that lane. Also fixes a shadowed "raw" binding introduced by the fail-closed change, which made the generator unrequirable — caught immediately by its own --check. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#2797): backfill changeset pr number to 2841 * fix(#2452): make the base-ref mutation test hermetic against leaked GIT_* env tests/mutation-workflow-base-ref.test.cjs fails on PR branches while next stays green, and it is currently blocking at least three unrelated PRs (#2841, #2832, #2827) with: error: invalid object 100644 <sha> for 'base-N.txt' error: Error building trees The existing loop comment attributes this to `git add .` rehashing O(n^2) blobs "before the object write had landed" and works around it by staging one path per iteration. That is not the cause: sequential execFileSync calls cannot race each other's object writes, and the failure persisted after that change — it simply moved to a lower commit index. The cause is that the git() helper inherited the runner's environment. A leaked GIT_INDEX_FILE makes `git add` write into a DIFFERENT repository's index; GIT_OBJECT_DIRECTORY / GIT_ALTERNATE_OBJECT_DIRECTORIES send the blob to another object store; GIT_DIR / GIT_WORK_TREE redirect the whole operation. In every case `git commit` then cannot resolve a blob it just staged, which is precisely the error above. Verified by negative control: with GIT_DIR exported, this test fails on the unfixed helper (the git commands operate on the wrong repository entirely); with the helper stripping GIT_* it passes. The single-path staging is kept — it is genuinely less work — but it is no longer load bearing. Found while shipping #2797. Fixed in place rather than deferred: it is a defect surfaced during the work, and it is blocking other contributors. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#2452): build the base-advance commits empty, removing the lost-object class The base-ref guard has been failing in CI with: error: invalid object 100644 <sha> for 'base-N.txt' error: Error building trees It is currently red on at least three unrelated PRs (#2841, #2832, #2827) while next stays green. Two theories have now been tried and neither held. #1881 blamed `git add .` rehashing O(n^2) blobs and switched to staging one path per iteration; the failure moved from commit 32 to commit 25 and carried on. The preceding commit here made the git helper hermetic against leaked GIT_* environment — that IS a real vulnerability (with GIT_DIR exported the helper operates on the wrong repository entirely, proven by negative control) but it produces a different error than CI reports, so it is not demonstrably the cause either. Neither trigger reproduces off-CI, so this stops guessing at the trigger and removes the failure CLASS instead. The loop needs base-branch DEPTH and nothing else: no assertion reads these commits' contents, and base-side files cannot appear in `origin/base...HEAD` regardless. `--allow-empty` writes no blob and no tree, so there is no object for the index to reference and lose. It is also far less work than 60 write+hash+index cycles. The guard still proves its mechanism: the test asserts that a --depth=1 base fetch FAILS and a full fetch resolves, so a broken topology would surface immediately rather than passing vacuously. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com> Co-authored-by: Test <test@example.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