Token	Action
`list`	Show enabled + disabled clusters and skills
`status`	Alias for `list` plus token cost summary
`profile <name>`	Write `baseProfile` and re-stage
`profile <n1>,<n2>`	Composed profiles (comma-separated, no spaces)
`disable <cluster>`	Add cluster to `disabledClusters`, re-stage
`enable <cluster>`	Remove cluster from `disabledClusters`, re-stage
`reset`	Delete `.gsd-surface.json`, return to install-time profile
(none)	Treat as `list`

list / status

Load the capability registry and call listSurface(runtimeConfigDir, manifest, CLUSTERS, registry) from the engine module at ${runtimeConfigDir}/gsd-core/bin/lib/surface.cjs. The registry is loaded via:

const registry = require(runtimeConfigDir + '/gsd-core/bin/lib/capability-registry.cjs');

Display:

Enabled (N skills, ~T tokens):
  core_loop:   new-project  discuss-phase  plan-phase  execute-phase  help  update
  audit_review: …
  …

Disabled:
  utility:  health  stats  settings  …

Token cost: ~T (budget cap ~500 tokens for 200k context @ 1%)

For status also append:

Base profile:   standard  (from .gsd-surface.json)
Install profile: standard  (from .gsd-profile)

Mutation protocol

Derive the next surfaceState in memory and pass it to applySurface as opts.surfaceState. Do not call writeSurface first: applySurface stages all artifact kinds before mutation and publishes the candidate state only after materialization succeeds. Pass null to reset to the install-time profile.

profile <name>

Read current surface: readSurface(runtimeConfigDir) → if null, seed from readActiveProfile(runtimeConfigDir).
Set surfaceState.baseProfile = name.
Keep the new state in memory; do not write it directly.

Resolve and re-apply:

const registry = require(runtimeConfigDir + '/gsd-core/bin/lib/capability-registry.cjs');
const layout = resolveRuntimeArtifactLayout(runtime, runtimeConfigDir, scope);
applySurface(runtimeConfigDir, layout, manifest, CLUSTERS, registry, { surfaceState });

Confirm: "Surface updated to profile <name>. N skills enabled."

disable <cluster>

Valid cluster names: core_loop, audit_review, milestone, research_ideate, workspace_state, docs, ui, ai_eval, ns_meta, utility.

Validate cluster name against Object.keys(CLUSTERS).
Read or initialize surface state.
Add cluster to surfaceState.disabledClusters (deduplicate).

Resolve layout and apply the in-memory candidate:

const registry = require(runtimeConfigDir + '/gsd-core/bin/lib/capability-registry.cjs');
const layout = resolveRuntimeArtifactLayout(runtime, runtimeConfigDir, scope);
applySurface(runtimeConfigDir, layout, manifest, CLUSTERS, registry, { surfaceState });

Confirm: "Disabled cluster <cluster>. N skills removed from surface."

enable <cluster>

Read surface state; if null, nothing to enable — print "No surface delta active."
Remove cluster from surfaceState.disabledClusters.

Resolve layout and apply the in-memory candidate:

const registry = require(runtimeConfigDir + '/gsd-core/bin/lib/capability-registry.cjs');
const layout = resolveRuntimeArtifactLayout(runtime, runtimeConfigDir, scope);
applySurface(runtimeConfigDir, layout, manifest, CLUSTERS, registry, { surfaceState });

Confirm: "Enabled cluster <cluster>. N skills added back to surface."

reset

Check if .gsd-surface.json exists.
Do not delete it directly.
Re-apply with { surfaceState: null }; the state file is removed only after the install-time profile materializes successfully.
Confirm: "Surface reset to install-time profile <name>."

runtimeConfigDir resolution

The runtimeConfigDir for applySurface is the base Claude config directory (~/.claude), NOT the skills sub-directory (~/.claude/skills).

This matches installRuntimeArtifacts and uninstallRuntimeArtifacts, which also receive ~/.claude as configDir. The skill dirs themselves live at ~/.claude/skills/gsd-*/ because the claude global layout has destSubpath = 'skills' — they are derived from configDir, not the root for it.

# Claude Code — global install
RUNTIME_CONFIG_DIR="${CLAUDE_CONFIG_DIR:-$HOME/.claude}"
SCOPE="global"

# Artifact destinations are derived from runtime layout
# via resolveRuntimeArtifactLayout(runtime, RUNTIME_CONFIG_DIR, SCOPE)
# then applySurface(RUNTIME_CONFIG_DIR, layout, manifest, CLUSTERS)

Surface state is stored at ${RUNTIME_CONFIG_DIR}/.gsd-surface.json (i.e. ~/.claude/.gsd-surface.json).

All paths can be overridden by reading the CLAUDE_CONFIG_DIR env var if set.

Error handling

Unknown cluster name → list valid cluster names, exit without writing.
Unknown profile name → list known profiles (core, standard, full), exit.
Missing surface.cjs → prompt: "Run npm i -g @opengsd/gsd-core to reinstall GSD."

<execution_context> Surface state file: ~/.claude/.gsd-surface.json Install profile marker: ~/.claude/.gsd-profile Skill dirs: ~/.claude/skills/gsd-*/ Engine module: ~/.claude/gsd-core/bin/lib/surface.cjs Cluster definitions: ~/.claude/gsd-core/bin/lib/clusters.cjs </execution_context>

gsd-surface

Sub-command routing