GSD User Guide

August 6, 2026 · View on GitHub

A narrative companion guide to GSD Core — orient yourself here, then follow the links into the dedicated docs.

GSD Core's documentation is organised by Diataxis. Browse by goal: Tutorials · How-to guides · Reference · Explanation · Docs index

Table of Contents

For driving GSD directly from a GitHub / Linear / Jira issue, see the Issue-driven orchestration guide — a recipe that maps tracker issues onto the workspace → discuss → plan → execute → verify → review → ship loop using existing GSD primitives.

Slash-command form

GSD ships the same set of skills to every supported runtime, using the hyphen slash-form spelling:

  • Hyphen form — /gsd-command-name — used by Claude Code, Copilot, OpenCode, Kilo, Cursor, Windsurf, Augment, Antigravity, and Trae.

The installer writes this form into the command directory of each runtime you target.

Namespace routing primer (gsd-ns-*, v1.40+)

Architecture

GSD ships six namespace router bundles (gsd-ns-workflow, gsd-ns-project, gsd-ns-review, gsd-ns-context, gsd-ns-ideate, gsd-ns-manage). On runtimes with non-recursive skill loaders, the installer emits these 6 routers as the only top-level skill entries; the ~61 concrete skills are nested under each router at <router>/skills/<name>/SKILL.md. This reduces the eager skill-listing overhead to ≈6 entries instead of ≈67.

Each router's body contains a routing table. When the model receives a request, it reads the router, identifies the relevant sub-skill by name, then opens skills/<name>/SKILL.md via a file-path Read. The concrete skill is fully available — it is not invocable by bare name through the Skill tool's top-level listing, but is reachable through the router.

The nested layout applies only to runtimes with confirmed non-recursive skill loaders: Cline, Qwen, Hermes, Augment, Trae. Claude's loader is also non-recursive, but #924 reverted it flat because the Skill tool hard-errors on unknown names rather than re-routing via the router. Antigravity's loader is also non-recursive, but #1614 moved it flat because agy scans only skills/<name>/SKILL.md — nested sub-skills were unreachable. Other recursive or unconfirmed loaders (Cursor, Codex, Copilot, Windsurf, CodeBuddy, OpenCode, Kilo) retain the flat layout unchanged.

NamespaceRouter bundleRoutes to
Phase pipelinegsd-ns-workflowdiscuss / plan / execute / verify / phase / progress
Project lifecyclegsd-ns-projectmilestones, audits, summary
Quality gatesgsd-ns-reviewcode review, debug, audit, security, eval, ui
Codebase intelligencegsd-ns-contextmap, graphify, docs, learnings
Exploration & capturegsd-ns-ideateexplore, sketch, spike, spec, capture
Managementgsd-ns-manageconfig, workspace, workstreams, thread, update, ship, inbox

Slash commands are unaffected

On runtimes that install a commands surface (commands/gsd), slash commands such as /gsd-plan-phase continue to work directly — the nesting applies only to the Skill tool's top-level listing, not to the commands directory.

Migration note (breaking change on nesting runtimes)

On the seven nesting runtimes listed above, upgrading to v1.40 changes skill invocation behaviour:

  • Before: each of the ~67 concrete gsd-<name> skills appeared at the top level and was invocable by bare name through the Skill tool.
  • After: only the 6 gsd-ns-* router bundles appear at the top level. Concrete skills are reachable via the router's routing table and a Read skills/<name>/SKILL.md call. Direct bare-name invocation of concrete skills through the Skill tool's listing no longer works.
  • Slash commands unchanged: /gsd-plan-phase, /gsd-discuss-phase, etc. still work directly where a commands surface is installed.
  • Upgrade prune: the installer's existing prune step removes the legacy top-level gsd-<concrete>/ skill directories on upgrade — no manual cleanup is needed.

Project lifecycle overview

The core GSD loop is: discuss → plan → execute → verify → ship, repeated per phase. The full step-by-step walkthrough — including example outputs, what files get created, and all the flags in play — is in the dedicated tutorial.

See Your first project.

For onboarding an existing codebase before starting a new milestone, run /gsd-onboard or see Onboarding an existing codebase.

Relevant flags at a glance:

FlagCommandWhen to use
--auto/gsd-new-projectSkip interactive questions, ingest from a PRD file
--research/gsd-quickAdd a research agent to an ad-hoc task
--validate/gsd-quickAdd plan-checking and post-execution verification
--chain/gsd-discuss-phaseAuto-chain discuss → plan → execute without stopping
--skip-research/gsd-plan-phaseSkip research agents when the domain is already familiar
--draft/gsd-shipCreate a draft PR instead of a ready-for-review one

For the full command reference with all flags, see docs/COMMANDS.md. For configuration options (model profiles, workflow agents, git branching), see docs/CONFIGURATION.md.

Workflow Diagrams

Full Project Lifecycle

  ┌──────────────────────────────────────────────────┐
  │                   NEW PROJECT                    │
  │  /gsd-new-project                                │
  │  Questions -> Research -> Requirements -> Roadmap│
  └─────────────────────────┬────────────────────────┘
                            │
             ┌──────────────▼─────────────┐
             │      FOR EACH PHASE:       │
             │                            │
             │  ┌────────────────────┐    │
             │  │ /gsd-discuss-phase │    │  <- Lock in preferences
             │  └──────────┬─────────┘    │
             │             │              │
             │  ┌──────────▼─────────┐    │
             │  │ /gsd-ui-phase      │    │  <- Design contract (frontend)
             │  └──────────┬─────────┘    │
             │             │              │
             │  ┌──────────▼─────────┐    │
             │  │ /gsd-plan-phase    │    │  <- Research + Plan + Verify
             │  └──────────┬─────────┘    │
             │             │              │
             │  ┌──────────▼─────────┐    │
             │  │ /gsd-execute-phase │    │  <- Parallel execution
             │  └──────────┬─────────┘    │
             │             │              │
             │  ┌──────────▼─────────┐    │
             │  │ /gsd-verify-work   │    │  <- Manual UAT
             │  └──────────┬─────────┘    │
             │             │              │
             │  ┌──────────▼─────────┐    │
             │  │ /gsd-ship          │    │  <- Create PR (optional)
             │  └──────────┬─────────┘    │
             │             │              │
             │     Next Phase?────────────┘
             │             │ No
             └─────────────┼──────────────┘
                            │
            ┌───────────────▼──────────────┐
            │  /gsd-audit-milestone        │
            │  /gsd-complete-milestone     │
            └───────────────┬──────────────┘
                            │
                   Another milestone?
                       │          │
                      Yes         No -> Done!
                       │
               ┌───────▼──────────────┐
               │  /gsd-new-milestone  │
               └──────────────────────┘

Planning Agent Coordination

  /gsd-plan-phase N
         │
         ├── Phase Researcher (x4 parallel)
         │     ├── Stack researcher
         │     ├── Features researcher
         │     ├── Architecture researcher
         │     └── Pitfalls researcher
         │           │
         │     ┌──────▼──────┐
         │     │ RESEARCH.md │
         │     └──────┬──────┘
         │            │
         │     ┌──────▼──────┐
         │     │   Planner   │  <- Reads PROJECT.md, REQUIREMENTS.md,
         │     │             │     CONTEXT.md, RESEARCH.md
         │     └──────┬──────┘
         │            │
         │     ┌──────▼───────────┐     ┌────────┐
         │     │   Plan Checker   │────>│ PASS?  │
         │     └──────────────────┘     └───┬────┘
         │                                  │
         │                             Yes  │  No
         │                              │   │   │
         │                              │   └───┘  (loop, up to 3x)
         │                              │
         │                        ┌─────▼──────┐
         │                        │ PLAN files │
         │                        └────────────┘
         └── Done

Validation Architecture (Nyquist Layer)

During plan-phase research, GSD maps automated test coverage to each phase requirement before any code is written. The researcher detects your existing test infrastructure, maps each requirement to a specific test command, and identifies any test scaffolding that must be created before implementation begins (Wave 0 tasks). The plan-checker enforces this as an 8th verification dimension: plans where tasks lack automated verify commands will not be approved.

Output: {phase}-VALIDATION.md — the feedback contract for the phase.

Disable: Set workflow.nyquist_validation: false in /gsd-settings for rapid prototyping phases where test infrastructure isn't the focus.

Retroactive Validation (/gsd-validate-phase)

For phases executed before Nyquist validation existed, or for existing codebases with only traditional test suites, retroactively audit and fill coverage gaps:

  /gsd-validate-phase N
         |
         +-- Detect state (VALIDATION.md exists? SUMMARY.md exists?)
         |
         +-- Discover: scan implementation, map requirements to tests
         |
         +-- Analyze gaps: which requirements lack automated verification?
         |
         +-- Present gap plan for approval
         |
         +-- Spawn auditor: generate tests, run, debug (max 3 attempts)
         |
         +-- Update VALIDATION.md
               |
               +-- COMPLIANT -> all requirements have automated checks
               +-- PARTIAL -> some gaps escalated to manual-only

The auditor never modifies implementation code — only test files and VALIDATION.md. If a test reveals an implementation bug, it's flagged as an escalation for you to address.

Assumptions Discussion Mode

By default, /gsd-discuss-phase asks open-ended questions about your implementation preferences. Assumptions mode inverts this: GSD reads your codebase first, surfaces structured assumptions about how it would build the phase, and asks only for corrections.

Enable: Set workflow.discuss_mode to 'assumptions' via /gsd-settings.

See docs/workflow-discuss-mode.md for the full discuss-mode reference.

Decision Coverage Gates

The discuss-phase captures implementation decisions in CONTEXT.md under a <decisions> block as numbered bullets (- **D-01:** …). Two gates ensure those decisions survive into plans and shipped code.

Plan-phase translation gate (blocking). After planning, GSD refuses to mark the phase planned until every trackable decision appears in at least one plan's scanned surfaces: front-matter must_haves/truths/objective, a ## must_haves/truths/tasks/objective heading, or an <objective>/<tasks>/<task>/<action>/<read_first>/<behavior>/<verify>/<acceptance_criteria>/<done> tag body.

Verify-phase validation gate (non-blocking). During verification, GSD searches plans, SUMMARY.md, modified files, and recent commit messages for each trackable decision. Misses are logged to VERIFICATION.md as a warning section; verification status is unchanged.

Opting a decision out. Move it under the ### Claude's Discretion heading inside <decisions>, or tag it: - **D-08 [informational]:** …, - **D-09 [folded]:** …, - **D-10 [deferred]:** ….

Disabling the gates. Set workflow.context_coverage_gate: false in .planning/config.json (or via /gsd-settings). Default is true.

Execution Wave Coordination

  /gsd-execute-phase N
         │
         ├── Analyze plan dependencies
         │
         ├── Wave 1 (independent plans):
         │     ├── Executor A (fresh 200K context) -> commit
         │     └── Executor B (fresh 200K context) -> commit
         │
         ├── Wave 2 (depends on Wave 1):
         │     └── Executor C (fresh 200K context) -> commit
         │
         └── Verifier
               ├── Check codebase against phase goals
               ├── Test quality audit (disabled tests, circular patterns, assertion strength)
               │
               ├── PASS -> VERIFICATION.md (success)
               └── FAIL -> Issues logged for /gsd-verify-work

Isolated-run Recovery (fail-safe)

When a worktree-isolated run is rejected — the user declines to merge it, or the run over-reached the requested scope, or the orchestrator surfaces recovery guidance for a blocked plan — GSD halts safely and offers two options: (a) re-attempt in a fresh, narrowly-scoped worktree, or (b) inspect or discard the rejected worktree without merging. GSD never defaults recovery to editing the primary checkout (main). Any path that edits the primary checkout requires explicit, clearly-labeled confirmation from the user first. This behavior is unconditional and applies to both /gsd-execute-phase (worktree executor waves) and /gsd-quick (quick-mode isolated runs).

UI Design Contract

AI-generated frontends are visually inconsistent not because Claude Code is bad at UI but because no design contract existed before execution. /gsd-ui-phase locks the design contract before planning; /gsd-ui-review audits the result after execution.

For the full workflow, configuration, shadcn initialisation, and the registry safety gate, see Design a UI phase.

Quick reference:

CommandDescription
/gsd-ui-phase [N]Generate UI-SPEC.md design contract for a frontend phase
/gsd-ui-review [N]Retroactive 6-pillar visual audit of implemented UI
SettingDefaultDescription
workflow.ui_phasetrueGenerate UI design contracts for frontend phases
workflow.ui_safety_gatetrueplan-phase prompts to run /gsd-ui-phase for frontend phases

Spiking & Sketching

Use /gsd-spike to validate technical feasibility before planning, and /gsd-sketch to explore visual direction before designing. Both store artifacts in .planning/ and integrate with the project-skills system via their wrap-up companions.

For the full workflow and flow diagram, see Spike and sketch.

Typical flow:

/gsd-spike "SSE vs WebSocket"     # Validate the approach
/gsd-spike --wrap-up              # Package learnings

/gsd-sketch "real-time feed UI"   # Explore the design
/gsd-sketch --wrap-up             # Package decisions

/gsd-discuss-phase N              # Lock in preferences (now informed by spike + sketch)
/gsd-plan-phase N                 # Plan with confidence

Backlog & Threads

Backlog Parking Lot

Ideas that aren't ready for active planning go into the backlog using 999.x numbering, keeping them outside the active phase sequence.

/gsd-capture --backlog "GraphQL API layer"     # Creates 999.1-graphql-api-layer/
/gsd-capture --backlog "Mobile responsive"     # Creates 999.2-mobile-responsive/

Backlog items get full phase directories, so you can use /gsd-discuss-phase 999.1 to explore an idea further or /gsd-plan-phase 999.1 when it's ready.

Review and promote with /gsd-review-backlog — it shows all backlog items and lets you promote (move to active sequence), keep (leave in backlog), or remove (delete).

Seeds

Seeds are forward-looking ideas with trigger conditions. Unlike backlog items, seeds surface automatically when the right milestone arrives.

/gsd-capture --seed "Add real-time collab when WebSocket infra is in place"

/gsd-new-milestone scans all seeds and presents matches. Storage: .planning/seeds/SEED-NNN-slug.md

Once you've parked a few, audit them on demand instead of waiting for the next milestone to surface them:

/gsd-capture --list-seeds            # Review every parked seed
/gsd-capture --list-seeds dormant    # Narrow to one status

This is read-only — it renders an audit table (ID, status, scope, trigger, title) and a per-status summary, and never modifies a seed. Filter by dormant, active, or triggered when you only want to see seeds in one state.

Persistent Context Threads

Threads are lightweight cross-session knowledge stores for work that spans multiple sessions but doesn't belong to any specific phase.

/gsd-thread                              # List all threads
/gsd-thread fix-deploy-key-auth          # Resume existing thread
/gsd-thread "Investigate TCP timeout"    # Create new thread

Threads can be promoted to phases (/gsd-phase) or backlog items (/gsd-capture --backlog) when they mature. Storage: .planning/threads/{slug}.md

Workstreams & Workspaces

Workstreams and workspaces both provide isolation, but at different levels.

Workstreams share the same codebase and git history but isolate planning artifacts — lighter weight, good for working on multiple milestone areas concurrently. See Work in parallel with workstreams.

Workspaces create separate repo worktrees with their own .planning/ — heavier, for feature-branch or multi-repo isolation. See Isolate work with workspaces.

CommandPurpose
/gsd-workstreams create <name>Create a new workstream with isolated planning state
/gsd-workstreams switch <name>Switch active context to a different workstream
/gsd-workstreams listShow all workstreams and which is active
/gsd-workstreams complete <name>Mark a workstream as done and archive its state
# Workspace example — feature branch isolation
/gsd-workspace --new --name feature-b --repos .
cd ~/gsd-workspaces/feature-b
/gsd-new-project

/gsd-workspace --list
/gsd-workspace --remove feature-b

Security

Defense-in-Depth (v1.27)

GSD generates markdown files that become LLM system prompts. This means any user-controlled text flowing into planning artifacts is a potential indirect prompt injection vector. v1.27 introduced centralised security hardening:

Path Traversal Prevention: All user-supplied file paths (--text-file, --prd) are validated to resolve within the project directory. macOS /var → /private/var symlink resolution is handled.

Prompt Injection Detection: The security.cjs module scans for known injection patterns in user-supplied text before it enters planning artifacts.

Runtime Hooks:

  • gsd-prompt-guard.js — Scans Write/Edit calls to .planning/ for injection patterns (always active, advisory-only)
  • gsd-workflow-guard.js — Warns on file edits outside GSD workflow context (opt-in via hooks.workflow_guard)
  • gsd-write-guard.js — Hard-blocks a whole-file Write that catastrophically shrinks a curated .planning/ artifact (ROADMAP.md, milestone roadmaps, STATE.md) below 40% of its on-disk line count; files under 40 lines are exempt. The check is stateless per Write, comparing each payload against the file's current on-disk size — a single-shot collapse (the #973 shape) is blocked, but a sequence of individually-tolerated shrinks that erodes the file across several Writes is not detected. For a legitimate milestone reset or large deletion, bypass once with the single-use sentinel — write the target's path into .planning/.gsd-allow-shrink (fresh within 15 minutes; consumed by the allowed write) — or, interactively, with GSD_ALLOW_PLANNING_SHRINK=1 in the runtime's environment. Scope the guarantee accordingly: this stops accidental and single-shot collapse, and is not a defense against a determined agent — the sentinel is a plain file, so anything with shell access can arm one; what it buys is that the bypass becomes a deliberate, path-bound, single-use and auditable action rather than a sentence to reason past (always active, blocking; #2255, fix 3 of #973)

CI Scanner: prompt-injection-scan.security.test.cjs scans all agent, workflow, and command files for embedded injection vectors.

Package Legitimacy Gate (v1.42.1)

AI coding tools hallucinate package names. Attackers pre-register those names on npm, PyPI, and crates.io with malicious post-install scripts — a technique called slopsquatting. v1.42.1 adds a three-layer gate that stops this before it reaches your shell.

In RESEARCH.md — every phase that recommends external packages includes a ## Package Legitimacy Audit table:

## Package Legitimacy Audit

| Package | Registry | Age | Downloads | Source Repo | Verdict | Disposition |
|---------|----------|-----|-----------|-------------|---------|-------------|
| express | npm | 13 yrs | 100M+/wk | github.com/expressjs/express | [OK] | Approved |
| some-new-util | npm | 3 days | 47 | none | [SLOP] | REMOVED |
| api-bridge | npm | 6 mo | 1.2k/wk | github.com/user/api-bridge | [SUS] | Flagged |

[SLOP] packages are removed from RESEARCH.md entirely and never reach the planner.

In PLAN.md — [SUS] or [ASSUMED] packages trigger a checkpoint:human-verify task before the install.

During execution — if an install fails, the executor surfaces a checkpoint and stops rather than silently trying an alternative.

Legitimacy verdicts:

VerdictMeaningGSD action
[OK]Passes all legitimacy checksProceeds — no checkpoint added
[SUS]Suspicious signalsFlagged; planner adds checkpoint:human-verify
[SLOP]High-confidence hallucinationRemoved from RESEARCH.md; never reaches planner

Verdicts are computed from live registry APIs (npm, PyPI, crates.io) — there is no separate tool to install. slopcheck is an optional escalate-only adapter (it can raise a verdict but never lower one); no shipped configuration wires it, and its absence does not change the gate's behavior.

Code Review Workflow

After executing a phase, run a structured code review before UAT. See Set up cross-AI review for the full workflow.

/gsd-code-review 3               # Review all changed files in phase 3
/gsd-code-review 3 --depth=deep  # Deep cross-file review
/gsd-code-review 3 --fix         # Fix Critical + Warning findings atomically
/gsd-code-review 3 --fix --auto  # Fix and re-review until clean (max 3 iterations)
/gsd-audit-fix                   # Audit + classify + fix (medium+ severity, max 5)

The review step slots in after execution and before UAT:

/gsd-execute-phase N  ->  /gsd-code-review N  ->  /gsd-code-review N --fix  ->  /gsd-verify-work N

Coverage-Aware UAT Routing

Historically, /gsd-verify-work turned every ## Accomplishments bullet in a SUMMARY into a manual checkpoint — even deliverables already covered one-to-one by a passing unit test. With a green test suite you were still asked to re-confirm things the tests had already proven, every phase.

GSD now lets the executor record, at authoring time, how each deliverable was verified. When a SUMMARY.md carries a coverage: frontmatter block (see the coverage: block reference), /gsd-verify-work routes deterministically:

  • Auto-passed — a deliverable marked human_judgment: false whose verification list is non-empty and entirely pass is recorded as passed (source: automated) and never prompted.
  • Presented — everything else is shown to you for sign-off: anything flagged human_judgment: true (visual adequacy, multi-device behaviour, subjective quality), anything with no verification, anything not fully passing, and any malformed entry.

The asymmetry is deliberate. The worst outcome is auto-passing something broken that UAT existed to catch, so auto-pass is the narrow, fully-proven case and uncertainty always routes back to you. Flipping the flag alone cannot skip a prompt — a passing test reference is also required. SUMMARYs without a coverage: block behave exactly as before (prose-based checkpoints), so nothing changes for existing or un-migrated phases.

Command And Configuration Reference

  • Command Reference: see docs/COMMANDS.md for every stable command's flags, subcommands, and examples.
  • Configuration Reference: see docs/CONFIGURATION.md for the full config.json schema, model-profile table, git branching strategies, and security settings.
  • Discuss Mode: see docs/workflow-discuss-mode.md for interview vs assumptions mode.

Graphify capability gate (tri-state, v1.43+)

Graphify commands (graphify status, graphify build, graphify query, graphify diff) now respect the full tri-state capability gate:

  1. Installed — the gsd-graphify-* skills are present in the active install profile.
  2. Surfaced — those skills appear on the current runtime surface (e.g., in ~/.claude/commands/gsd/).
  3. Config-enabled — graphify.enabled: true is set in .planning/config.json.

All three conditions must be true. Setting graphify.enabled: true alone is no longer sufficient if graphify has not been installed and surfaced. If graphify commands return { disabled: true } after upgrading, verify that the install profile includes graphify skills (gsd-tools capability state) and re-run the installer to surface them.

Intel capability gate (tri-state, v1.44+)

Intel commands (intel status, intel query, intel diff, intel snapshot, intel validate, intel api-surface) now respect the full tri-state capability gate (same resolver as graphify above):

  1. Installed — the intel capability is present in the active install profile (intel has no skill files, so this is vacuously true for all profiles).
  2. Surfaced — the intel capability is on the current runtime surface (vacuously true for all surfaces since intel registers no skill stems).
  3. Config-enabled — intel.enabled: true is set in .planning/config.json.

For intel, conditions 1 and 2 are always satisfied (intel has no skill files). The effective gate is intel.enabled in config — the same behaviour as before, but now enforced through the shared isCapabilityActive('intel', cwd) resolver rather than a direct config read. This means intel honours the full capability-state pipeline, including any future install-profile or surface restrictions. If intel commands return { disabled: true }, ensure intel.enabled: true is set in .planning/config.json and verify gsd-tools capability state shows intel as active.

Usage Examples

New Project (Full Cycle)

claude --dangerously-skip-permissions
/gsd-new-project            # Answer questions, configure, approve roadmap
/clear
/gsd-discuss-phase 1        # Lock in your preferences
/gsd-ui-phase 1             # Design contract (frontend phases)
/gsd-plan-phase 1           # Research + plan + verify
/gsd-execute-phase 1        # Parallel execution
/gsd-verify-work 1          # Manual UAT
/gsd-ship 1                 # Create PR from verified work
/gsd-ui-review 1            # Visual audit (frontend phases)
/clear
/gsd-progress --next                   # Auto-detect and run next step
...
/gsd-audit-milestone        # Check everything shipped
/gsd-complete-milestone     # Archive, tag, done
/gsd-pause-work --report         # Generate session summary

Caution

The permissions flag is optional. It skips per-file confirmation while GSD's sub-agents read and write files. Use it only in low-stakes or throwaway contexts. To keep confirmations enabled, start with claude instead. For real work, read the security model first.

New Project from Existing Document

/gsd-new-project --auto @prd.md   # Auto-runs research/requirements/roadmap from your doc
/clear
/gsd-discuss-phase 1               # Normal flow from here

Existing Codebase

/gsd-onboard                # Safely map, ingest docs, and initialize planning
# Follow the printed top-level handoff commands, then rerun /gsd-onboard
# (normal phase workflow from here)

/gsd-onboard routes through /gsd-map-codebase, /gsd-ingest-docs, and /gsd-new-project without nesting interactive workflows or overwriting existing planning files silently.

Post-execute drift detection (#2003). After every /gsd-execute-phase, GSD checks whether the phase introduced enough structural change to make .planning/codebase/STRUCTURE.md stale. Flip the behavior with:

/gsd-settings workflow.drift_action auto-remap       # remap automatically
/gsd-settings workflow.drift_threshold 5             # tune sensitivity

Plan Drift Guard

Default-on. The plan drift guard (plan_review.source_grounding: true) runs during plan review and verifies that every symbol your plans cite — decorators, classes, functions, CLI flags — actually exists in your source tree at review time. This catches hallucinated names before any execution agent runs.

What it catches:

  • Functions referenced in a PLAN.md step that don't exist in source
  • Class or decorator names that were renamed or removed since the plan was written
  • CLI flags documented in a plan that are not defined in the argument parser
  • Module paths cited in implementation steps that resolve to no files

Needs-acknowledgement behavior. When the guard finds a missing symbol, it emits a needs-acknowledgement notice in the plan review output rather than hard-blocking. You can acknowledge and proceed (the symbol may be intentionally new) or request a plan revision. The guard does not auto-reject plans — it surfaces signal for human decision.

Works without intel. By default the guard uses grep/ripgrep to search source files — no pre-indexing required. If you have run /gsd-map-codebase with intel.enabled: true, set plan_review.source_grounding_authority: intel to use the faster pre-built api-map.json index instead.

# Enable/disable (default: on)
/gsd-settings plan_review.source_grounding true
/gsd-settings plan_review.source_grounding false

# Switch resolver authority
/gsd-settings plan_review.source_grounding_authority grep   # live grep (default)
/gsd-settings plan_review.source_grounding_authority intel  # pre-indexed api-map.json

Toggle at project setup (/gsd-new-project asks during workflow preferences) or any time via /gsd-settings (Planning section → Drift Guard).

Quick Bug Fix

/gsd-quick
> "Fix the login button not responding on mobile Safari"

Resuming After a Break

/gsd-progress               # See where you left off and what's next
# or
/gsd-resume-work            # Full context restoration from last session

Preparing for Release

/gsd-audit-milestone        # Check requirements coverage, detect stubs
/gsd-complete-milestone     # Archive, tag, done

Speed vs Quality Presets

ScenarioModeGranularityProfileResearchPlan CheckVerifier
Prototypingyolocoarsebudgetoffoffoff
Normal devinteractivestandardbalancedononon
Productioninteractivefinequalityononon

Skipping discuss-phase in autonomous mode: When running in yolo mode, set workflow.skip_discuss: true via /gsd-settings.

Mid-Milestone Scope Changes

/gsd-phase                  # Append a new phase to the roadmap (default mode)
/gsd-phase --insert 3       # Insert urgent work between phases 3 and 4
/gsd-phase --remove 7       # Descope phase 7 and renumber
/gsd-phase --edit 4         # Edit any field of phase 4 in place

Troubleshooting

For a comprehensive troubleshooting guide, see Recover and troubleshoot. The most common issues are summarised below.

Programmatic CLI (gsd-tools query vs gsd-tools.cjs)

For automation, prefer gsd-tools query with a registered subcommand (see CLI-TOOLS.md — SDK and programmatic access and QUERY-HANDLERS.md). The legacy node $HOME/.claude/gsd-core/bin/gsd-tools.cjs CLI remains supported.

STATE.md Out of Sync

node "$HOME/.claude/gsd-core/bin/gsd-tools.cjs" state validate          # Detect drift
node "$HOME/.claude/gsd-core/bin/gsd-tools.cjs" state sync --verify     # Preview changes
node "$HOME/.claude/gsd-core/bin/gsd-tools.cjs" state sync              # Reconstruct STATE.md

A Command Looks Frozen After "Spawning..."

GSD subagents run in a separate context window — their work is invisible to the parent session while in progress. Do not interrupt the session. Wait for the result; research and planning agents routinely take 1–5 minutes.

Context Degradation During Long Sessions

Clear your context window between major commands: /clear in Claude Code. GSD is designed around fresh contexts — every subagent gets a clean 200K window. Use /gsd-resume-work or /gsd-progress to restore state after clearing.

Plans Seem Wrong or Misaligned

Run /gsd-discuss-phase [N] before planning. Most plan quality issues come from Claude making assumptions that CONTEXT.md would have prevented.

Execution Fails or Produces Stubs

Check that the plan was not too ambitious. Plans should have 2–3 tasks maximum. Re-plan with smaller scope.

Lost Track of Where You Are

Run /gsd-progress. It reads all state files and tells you exactly where you are and what to do next.

Model Costs Too High

Switch to budget profile: /gsd-config --profile budget. Disable research and plan-check agents via /gsd-settings if the domain is familiar.

Tuning model cost by phase (models) — added in v1.40

Add a models block to .planning/config.json:

{
  "model_profile": "balanced",
  "models": {
    "planning": "opus",
    "discuss": "opus",
    "research": "sonnet",
    "execution": "opus",
    "verification": "sonnet",
    "completion": "sonnet"
  }
}

Need a per-agent exception? Add model_overrides alongside — it wins over models:

{
  "models": { "research": "sonnet" },
  "model_overrides": {
    "gsd-codebase-mapper": "haiku"
  }
}

For the full mapping table and resolution-precedence rules, see Per-Phase-Type Models.

Cheap-by-default with dynamic_routing — added in v1.40

{
  "dynamic_routing": {
    "enabled": true,
    "tier_models": {
      "light":    "haiku",
      "standard": "sonnet",
      "heavy":    "opus"
    },
    "escalate_on_failure": true,
    "max_escalations": 1
  }
}

For the full agent → tier mapping, see Dynamic Routing.

Trim MCP servers to reduce per-turn cost

Before tuning model_profile or models.<phase_type>, audit which MCP servers your harness has enabled. Every enabled MCP server injects its tool schema into every turn — heavyweight servers can cost 20k+ tokens each.

This is a harness setting, not a GSD setting. The toggle lives in .claude/settings.json:

{
  "enabledMcpjsonServers": ["context7"],
  "disabledMcpjsonServers": ["playwright", "mac-tools"]
}

Quick audit before a long phase:

  • Are any browser / playwright tools enabled when this phase has no UI work?
  • Are any platform-specific tools enabled when not needed?
  • Are any project-specific MCPs from a different project still enabled here?

Each disabled server removes its schema from every subsequent turn. Trimming MCPs compounds with model_profile tuning — both levers are additive, and MCP savings show up immediately across every subagent the orchestrator spawns.

For the full audit, harness reference, and the composition note with model_profile, see MCP Tool Schema Cost in the bundled context-budget.md reference.

Using Non-Claude Runtimes (Codex, OpenCode, Antigravity CLI, Kilo)

Codex CLI minimum supported version: 0.130.0 (issue #3562).

If you installed GSD for a non-Claude runtime, the installer already configured model resolution. No manual setup is needed — resolve_model_ids: "omit" is set automatically, which tells GSD to skip Anthropic model ID resolution and let the runtime choose its own default model.

To assign different models on a non-Claude runtime:

{
  "resolve_model_ids": "omit",
  "model_overrides": {
    "gsd-planner": "o3",
    "gsd-executor": "o4-mini",
    "gsd-debugger": "o3"
  }
}

Codex skill picker and agent scheduling (#774)

GSD enriches each Codex install with an additional artifact:

  • Flex-tier scheduling — light-tier agents (haiku-equivalent) emit service_tier = "flex" and model_verbosity = "low" in their agent TOML. The Codex scheduler routes these agents to the flex tier (lower cost, background processing) and suppresses verbose token output.

GSD skills appear in the Codex /skills picker via their SKILL.md file, which Codex discovers automatically. No agents/openai.yaml sidecar is emitted — doing so caused duplicate autocomplete entries (#1326).

This enrichment is written automatically at install time and requires no manual configuration. Requires Codex CLI ≥ 0.130.0.

Switching from Claude to Codex with one config change (#2517)

{
  "runtime": "codex",
  "model_profile": "balanced"
}

See Runtime-Aware Profiles.

Per-runtime command enrichment

When generating artifacts, the installer adapts GSD commands to each runtime's native command schema:

  • Qwen Code — main-loop skills carry Qwen's numeric priority field so the most-used workflows (e.g. new-project, plan-phase, execute-phase) sort first in the /skills list; utility skills are left unset. Higher values sort earlier; the field affects only the /skills list order.

See How to install GSD Core on your runtime for the full per-runtime details.

Manual install / no-Node.js setup

If you cannot run the GSD installer, you cannot use the source files in agents/ directly — they are in Claude Code's native frontmatter format. For OpenCode, two transformations are required:

FieldGSD source formatOpenCode-valid formatAction
tools:Read, Bash, Grep (comma-string)Not a frontmatter fieldRemove the tools: line entirely
color:Plain CSS color nameHex or OpenCode semantic nameConvert to hex or remove

Alternative: run the installer on any machine with Node.js:

npx @opengsd/gsd-core@latest --opencode --global

Installing for Cline

npx @opengsd/gsd-core --cline --global   # applies to all projects
npx @opengsd/gsd-core --cline --local    # this project only

Installing for CodeBuddy

npx @opengsd/gsd-core --codebuddy --global

GSD installs four surfaces for CodeBuddy: /gsd-* slash commands in ~/.codebuddy/commands/, subagents in ~/.codebuddy/agents/, model-invocable skills in ~/.codebuddy/skills/, and settings.json hooks. The skills are emitted with user-invocable: false so the slash commands are the single / menu surface (no duplicate entries).

Installing for Qwen Code

npx @opengsd/gsd-core --qwen --global

Installing for Prerelease Editions

Set the runtime's *_CONFIG_DIR env var to the prerelease directory before running the installer:

WINDSURF_CONFIG_DIR=~/.codeium/windsurf-next npx @opengsd/gsd-core@latest --windsurf --global

Env-var reference for supported runtimes:

RuntimeStable defaultOverride env var
Claude Code~/.claudeCLAUDE_CONFIG_DIR
OpenCodeXDG_CONFIG_HOME/opencodeOPENCODE_CONFIG_DIR
Codex(per Codex CLI)--config-dir flag
Copilot~/.copilotCOPILOT_CONFIG_DIR (or COPILOT_HOME)
Cursor~/.cursorCURSOR_CONFIG_DIR
Windsurf / Devin Desktop~/.codeium/windsurfWINDSURF_CONFIG_DIR
Antigravityauto-detectedANTIGRAVITY_CONFIG_DIR
Augment~/.augmentAUGMENT_CONFIG_DIR
Trae~/.traeTRAE_CONFIG_DIR
Qwen Code~/.qwenQWEN_CONFIG_DIR
Kilo~/.config/kiloKILO_CONFIG_DIR
CodeBuddy~/.codebuddyCODEBUDDY_CONFIG_DIR
Cline~/.clineCLINE_CONFIG_DIR

Using Claude Code with Non-Anthropic Providers

Switch to the inherit profile: /gsd-config --profile inherit. This makes all agents use your current session model.

Working on a Sensitive/Private Project

Set commit_docs: false during /gsd-new-project or via /gsd-settings. Add .planning/ to your .gitignore.

GSD Update Overwrote My Local Changes

Which recovery you need depends on whether you modified a GSD file or added your own:

  • You edited a file GSD ships (an agent prompt, a workflow). Since v1.17 the installer backs it up to gsd-local-patches/. Run /gsd-update --reapply to merge your changes back.

  • You added your own file inside a GSD-managed directory (a custom skill under skills/, an extra file in commands/gsd/). The installer saves it to gsd-user-files-backup/, and the update offers to restore it once the new version is installed. If you declined, or the backup is left over from an older update, restore it any time:

    node <config-dir>/gsd-core/bin/gsd-tools.cjs restore-custom-files --config-dir <config-dir> --apply

    Run it without --apply first to see what would be restored. The backup is never deleted, and the restore skips any file that would overwrite something the new release ships.

Install or Refresh a Release Candidate

To install or refresh GSD from the @next RC dist-tag (the pre-release channel established by ADR #660), run:

/gsd-update --next
# or equivalently:
/gsd-update --rc

The same scope/runtime detection, changelog preview, custom-file backup, and cache clearing apply. Omitting --next/--rc keeps targeting @latest (stable channel, no change). Only the @latest and @next channels are supported — no arbitrary dist-tag can be passed.

Cannot Update via npm

See docs/manual-update.md for a step-by-step manual update procedure.

Workflow Diagnostics (/gsd-forensics)

When a workflow fails in a non-obvious way, run /gsd-forensics to generate a diagnostic report covering git history anomalies, artifact integrity, and state inconsistencies. Output goes to .planning/forensics/.

Pre-populated Permissions (Claude Code)

Since v1.3.1, the installer pre-populates ~/.claude/settings.json (or settings.local.json for local installs) with the core permissions GSD needs:

{
  "permissions": {
    "allow": [
      "Bash(npx gsd-core *)",
      "Read(.planning/*)",
      "Edit(.planning/*)",
      "Read(STATE.md)",
      "Edit(STATE.md)"
    ],
    "deny": [
      "Read(.env)",
      "Read(.env.*)",
      "Read(.secrets)"
    ]
  }
}

These entries eliminate first-run approval prompts for GSD's own tool calls. The merge is non-destructive — your existing permissions are preserved and GSD entries are only appended. Uninstalling GSD removes exactly these entries and preserves any others.

Executor Subagent Gets "Permission denied" on Bash Commands

Add the required patterns to ~/.claude/settings.json. Core patterns needed for all stacks:

"Bash(git add:*)",
"Bash(git commit:*)",
"Bash(git merge:*)",
"Bash(git worktree:*)",
"Bash(git rebase:*)",
"Bash(git reset:*)",
"Bash(git checkout:*)",
"Bash(git switch:*)",
"Bash(git restore:*)",
"Bash(git stash:*)",
"Bash(git rm:*)",
"Bash(git mv:*)",
"Bash(git fetch:*)",
"Bash(git cherry-pick:*)",
"Bash(git apply:*)",
"Bash(gh:*)"

Per-project permissions: add the same permissions.allow block to .claude/settings.local.json in your project root instead of ~/.claude/settings.json.

Parallel Execution Causes Build Lock Errors

GSD handles this automatically since v1.26. If you're on an older version, add to your project's CLAUDE.md:

## Git Commit Rules for Agents
All subagent/executor commits MUST use `--no-verify`.

To disable parallel execution entirely: /gsd-settings → set parallelization.enabled to false.

Recovery Quick Reference

ProblemSolution
Lost context / new session/gsd-resume-work or /gsd-progress
Phase went wronggit revert the phase commits, then re-plan
Need to change scope/gsd-phase (default), /gsd-phase --insert, or /gsd-phase --remove
Something broke/gsd-debug "description" (add --diagnose for analysis without fixes)
STATE.md out of syncstate validate then state sync
Workflow state seems corrupted/gsd-forensics
Quick targeted fix/gsd-quick
Plan doesn't match your vision/gsd-discuss-phase [N] then re-plan
Costs running high/gsd-config --profile budget and /gsd-settings to toggle agents off
Update broke local changes/gsd-update --reapply
Custom file gone after an updategsd-tools restore-custom-files --config-dir <dir> --apply
Want session summary for stakeholder/gsd-pause-work --report
Don't know what step is next/gsd-progress --next
Parallel execution build errorsUpdate GSD or set parallelization.enabled: false

Project File Structure

.planning/
  PROJECT.md              # Project vision and context (always loaded)
  REQUIREMENTS.md         # Scoped v1/v2 requirements with IDs
  ROADMAP.md              # Phase breakdown with status tracking
  STATE.md                # Decisions, blockers, session memory
  config.json             # Workflow configuration
  MILESTONES.md           # Completed milestone archive
  HANDOFF.json            # Structured session handoff (from /gsd-pause-work)
  research/               # Domain research from /gsd-new-project
  reports/                # Session reports (from /gsd-pause-work --report)
  todos/
    pending/              # Captured ideas awaiting work
    completed/             # Completed todos
  debug/                  # Active debug sessions
    resolved/             # Archived debug sessions
  spikes/                 # Feasibility experiments (from /gsd-spike)
    NNN-name/             # Experiment code + README with verdict
    MANIFEST.md           # Index of all spikes
  sketches/               # HTML mockups (from /gsd-sketch)
    NNN-name/             # index.html (2-3 variants) + README
    themes/
      default.css         # Shared CSS variables for all sketches
    MANIFEST.md           # Index of all sketches with winners
  codebase/               # Brownfield codebase mapping (from /gsd-map-codebase or /gsd-onboard)
  onboarding/             # Brownfield onboarding summary (from /gsd-onboard)
  phases/
    XX-phase-name/
      XX-YY-PLAN.md       # Atomic execution plans
      XX-YY-SUMMARY.md    # Execution outcomes and decisions
      CONTEXT.md          # Your implementation preferences
      RESEARCH.md         # Ecosystem research findings
      VERIFICATION.md     # Post-execution verification results
      XX-UI-SPEC.md       # UI design contract (from /gsd-ui-phase)
      XX-UI-REVIEW.md     # Visual audit scores (from /gsd-ui-review)
  ui-reviews/             # Screenshots from /gsd-ui-review (gitignored)