| name | gdd-benchmark |
| description | Harvest and synthesize per-component design benchmarks from 18 design systems and produce canonical component specs at `reference/components/<name>.md`. Use when adding a new component spec, running a benchmark wave, listing corpus coverage, or refreshing a spec after a design-system version bump. |
| argument-hint | <component> | --wave <N> | --list | --refresh <component> |
| tools | Read, Write, Bash, Grep, Glob, Task, WebFetch |
/gdd:benchmark
Harvest per-component design knowledge from 18 design systems and synthesize canonical
specs at reference/components/<name>.md. The 18-source corpus + fallback chain lives in
../../connections/design-corpora.md. Per-skill output discipline + completion-marker
conventions are at ../../reference/shared-preamble.md#output-contract-reminders.
Invocation Modes
| Invocation | Action |
|---|
/gdd:benchmark <component> | Harvest + synthesize a single component |
/gdd:benchmark --wave <N> | Run a full wave (1 = Inputs, 2 = Containers, etc.) |
/gdd:benchmark --list | Show corpus coverage - which specs exist, which are pending |
/gdd:benchmark --refresh <component> | Re-harvest a spec (for design-system version bumps) |
Single-Component Flow (/gdd:benchmark <component>)
-
Check if spec exists - Glob("reference/components/<component>.md"). If found and --refresh was not passed, confirm before overwriting.
-
Harvest - spawn component-benchmark-harvester with required-reading @connections/design-corpora.md, target component, raw-output path .planning/benchmarks/raw/<component>.md, and a salvage hint to .planning/research/impeccable-salvage/. Acceptance: raw harvest exists with ≥4 source sections.
-
Synthesize - spawn component-benchmark-synthesizer with required-reading @.planning/benchmarks/raw/<component>.md, @reference/components/TEMPLATE.md, @reference/anti-patterns.md. Output: reference/components/<component>.md. Also update reference/components/README.md (add entry in correct category). Acceptance: spec ≤350 lines, cites ≥4 systems, follows TEMPLATE.md sections, has a WAI-ARIA keyboard contract + a failing-example block.
-
Report - print spec path, line count, systems cited.
Wave Mode (/gdd:benchmark --wave <N>)
Read the wave definition from reference/components/README.md and run each component sequentially (not parallel - each harvest is network-bound and the raw files are large).
| Wave | Components |
|---|
| 1 | button, input, select-combobox, checkbox, radio, switch, link, label |
| 2 | card, modal-dialog, drawer, popover, tooltip, accordion, tabs |
Print progress per component: [N/total] harvesting <component>…
List Mode (/gdd:benchmark --list)
Read reference/components/README.md and diff against reference/components/*.md files. Print a table with columns: Component, Status, Wave, Lines.
Refresh Mode (/gdd:benchmark --refresh <component>)
Same as single-component flow but skips the "already exists" guard. Use when a design system ships a breaking update to a component's spec.
Source List
../../connections/design-corpora.md - 18 design systems with canonical URLs, licensing, and fallback chain (canonical → archive.org → Refero MCP → Pinterest MCP).
Output Artifacts
| Artifact | Purpose |
|---|
.planning/benchmarks/raw/<component>.md | Raw multi-source harvest (input only) |
reference/components/<component>.md | Canonical spec (distributed with plugin) |
reference/components/README.md | Corpus index (updated by synthesizer) |
BENCHMARK COMPLETE
