plugins/stardust/skills/extract/SKILL.md
Crawl an existing website (capped, multi-page) and seed stardust/current/ with PRODUCT.md, DESIGN.md, DESIGN.json, a per-page inventory, and the consolidated brand surface.
npx skillsauth add adobe/skills extractInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Crawl an existing website, parse each page, extract the brand surface,
and produce a stardust-formatted snapshot of the current state under
stardust/current/. The output describes what the site is; later
sub-commands consume it to decide what it should be.
This skill is descriptive: it does not invent direction, it does not
critique, and it does not modify the live site. It writes only under
stardust/current/ and updates stardust/state.json.
<url> — required. The origin to crawl. Examples: https://example.com,
https://example.com/shop. A path narrows the same-origin crawl to
that subtree.--cap <N> — optional. Override the default 5-page cap. The cap
is intentionally small — a 5-page sample (home + four IA
pillars/templates) is enough for cross-page brand aggregation,
system-component detection, and the brand-review HTML to do
useful work. Lift the cap with --cap 25 (the previous default)
or higher when a deeper crawl is genuinely needed.--all — optional. Lift the cap entirely; extract every
discovered page after junk filtering. Equivalent to --cap 0.
Use when the user spontaneously asks for a full crawl.--pages <slug,slug,...> — optional. Restrict the crawl to specific
paths (slugs derived per reference/ia-extraction.md). Bypasses
the cap.--refresh <slug> — optional. Re-extract one page that already exists
in state.json.--single — optional. Equivalent to --cap 1. Useful for testing.--wait <fast|medium|spec|auto> — optional. Wait strategy per page.
Default medium. See reference/playwright-recipe.md § Wait modes.--no-junk-filter — optional. Disable the default junk-page filter
in discovery (see reference/ia-extraction.md § Filtering).--no-consent-dismiss — optional. Skip the pre-flight consent /
cookie banner dismissal (see reference/playwright-recipe.md
§ Pre-flight: consent dismissal). Use when the redesign scope
explicitly includes the consent surface, or when the
dismissal's side-effects (script activation that wouldn't
otherwise run) need to be avoided. Default behaviour is to
dismiss; the contract preserves screenshots, voice
aggregation, and per-section style from being polluted by
the banner.--prep — optional. Run in migrate-prep mode: lift the cap,
type each page, detect module candidates, capture typed content
slots, emit the prep summary. See § Prep mode below. Typically
invoked via the prepare-migration orchestrator skill rather
than directly.Run the master skill's setup procedure first
(skills/stardust/SKILL.md § Setup): impeccable dep check, context
loader, state read.
Additional checks for this sub-command:
npx playwright. If neither is available, stop and tell the
user how to install Playwright.stardust/state.json already records
site.originUrl and the new <url> is a different origin, stop and
ask before clobbering. Stardust does not silently mix two sites in
one project.BrowserContext for the run.
Run the consent dismissal pre-flight per
reference/playwright-recipe.md § Pre-flight: consent
dismissal unless --no-consent-dismiss is set. Cookies
persist across the per-page loop within the same context, so
one dismissal covers the whole crawl. Record the resolved
method in _crawl-log.json#consent.method.ERR_HTTP2_PROTOCOL_ERROR or ERR_QUIC_PROTOCOL_ERROR,
or hangs through the entire hard-cap on what should be a fast
origin, do not retry headless. Switch to
headless: false, channel: 'chrome' per
reference/playwright-recipe.md § Bot-management fallback and
record the switch in _crawl-log.json#discovery.fetchTechnique
so re-runs start in headed mode without rediscovering the
issue.Discover the page inventory before crawling. Procedure in
reference/ia-extraction.md. In summary:
Fetch <origin>/sitemap.xml, then <origin>/sitemap_index.xml,
then check robots.txt for Sitemap: directives.
If no sitemap is reachable, run a same-origin BFS crawl from
<url>, depth-limited to 3, link-extracting from rendered HTML.
Filter the discovered URL list: same origin only, exclude
mailto:, tel:, anchor-only links, query-only variations,
common asset paths (.css, .js, .pdf, image extensions).
De-duplicate trailing-slash variations.
Apply the junk-page filter (reference/ia-extraction.md §
Junk-page filter) unless --no-junk-filter is set. Surface the
filtered list to the user as overridable.
Apply the cap (default 5, or --cap, or --all for no cap)
and proceed silently. Print an informational summary of
what was kept and what was cut — but do not gate on user
confirmation. The default cap is small enough that the common
case is "extract 5 pages and move on"; pausing for a yes/no
reply on every run is friction without value. Users who want
different scope set it spontaneously at command time:
$stardust extract https://example.com # default 5 pages
$stardust extract https://example.com --cap 25 # bump to 25
$stardust extract https://example.com --all # lift the cap
$stardust extract https://example.com --pages home,about,pricing
$stardust extract https://example.com --single # just the entry URL
The agent reads spontaneous scope intent from the user's prompt (e.g. "extract all pages", "look at just the home and pricing", "do a full crawl") and applies the equivalent flag. No re-confirmation needed once intent is clear.
Informational output (not a prompt — proceed immediately):
Discovered 38 pages on https://example.com (sitemap.xml).
Filtered as likely junk (5): /test/, /sample-page/, /holiday1/, ...
Selecting 5 highest-priority pages:
- / (home)
- /about
- /pricing
- /products
- /contact
Cut (28 pages, --all to lift): /blog/post-1, /blog/post-2, ...
Extracting...
Selection heuristic: page-type checklist first, then score-based
ranking (home + IA-pillar keywords + sitemap priority − archive /
version markers). See reference/ia-extraction.md § Page
selection and § Priority for the cap. The English-only keyword
list is a known limitation for localized sites.
Write the discovered list to stardust/current/_crawl-log.json
(created if absent) with _provenance and the full discovery
reasoning, including filteredAsJunk[] and userChoice. This is
an audit trail, not a state file.
For each page in the cap-respecting list, render with Playwright
following reference/playwright-recipe.md. The recipe is mandatory —
in particular, do not skip the wait, scroll, or capture-list steps:
medium; see § Wait
modes in reference/playwright-recipe.md)prefers-reduced-motion: reducewaitMs and waitMode in the per-page _provenanceCapture per page (full schema in reference/current-state-schema.md):
reference/playwright-recipe.md § Capture
list 7), structured paragraphs (body[]), lists, FAQ Q/A
pairs, and review/testimonial quotes per
§ Capture list 7-bis. Without these structured fields,
every body region under a heading falls back to placeholder
signature at migrate time.cssBackgrounds[] (including pseudo-element ::before/
::after walks per § Capture list 11) so background-image
heroes and motifs do not silently disappear from extract.woff2/woff/ttf/otf response saved under
assets/fonts/ and recorded in _brand-extraction.json#type.files[]
with licensing flag.[class^="icon-"] with non-default ::before
font-family + codepoint, capture the family, save the file,
and record the iconClass → codepoint table in
_brand-extraction.json#iconFont.Save to stardust/current/pages/<slug>.json with _provenance as the
first key. Save referenced media to stardust/current/assets/media/
preserving basename plus a short content hash.
Live-render evidence (synthesis is forbidden). Refuse to mark
a page extracted in state.json unless its _provenance
contains renderedBy: "playwright", an ISO-8601 fetchedAt, a
positive integer waitMs, a waitMode from the recipe, and a
final httpStatus in the 2xx/3xx range. These five fields are
the contract enforced by reference/current-state-schema.md
§ Live-render evidence and read back by every downstream phase
via validateProvenance() per
skills/stardust/reference/state-machine.md § Provenance
validation. Synthesizing a page record from
_brand-extraction.json plus URL patterns plus captured photos
— the 2026-04-30 lovesac shortcut — is the failure mode this
guard exists to prevent. When the agent (or a delegated sub-
agent) cannot satisfy the contract for a page, treat the page
as a Phase 2 failure: record under _crawl-log.json#crawl.failures[]
with errorClass: "ProvenanceMissing" and continue.
Mark the page extracted in state.json immediately after each
successful page write. If a page fails, record the error in
_crawl-log.json and continue — extraction is best-effort per page.
Run once, after Phase 2 has finished, so cross-page aggregation
has data to work with. Produces stardust/current/_brand-extraction.json
per reference/brand-surface.md. Some fields are home-only (logo,
voice samples, register heuristic); the visual tokens that drive
DESIGN.md (palette, radius, shadow, type) are aggregated across all
extracted pages to avoid the home-page bias documented in
brand-surface.md § Aggregation scope. Captures:
<img> with
logo-ish class/id → apple-touch-icon → og:image → favicon →
synthesized placeholder. Save to stardust/current/assets/logo.<ext>.brand-surface.md § Modular-scale
audit) and emit scaleAudit.kind = "modular" | "ad-hoc"._provenance.notes.direct later but extracted now so the network round-trip is over.voice.heroImage (per reference/brand-surface.md
§ heroImage resolution). Without this elevation, downstream
prototype reasons over a 16-image list and frequently picks
the og:image instead of the live hero.reference/playwright-recipe.md
§ Capture list 17, populate _brand-extraction.json#iconFont
with family, file path, and the iconClass → codepoint
table so prototypes can render the brand's actual icons.reference/brand-surface.md § System components. Required —
these are usually the most load-bearing surfaces and must not
silently disappear from the redesign target.Do not invent values. Every captured value cites a source selector or
URL in _brand-extraction.json for traceability.
stardust/current/PRODUCT.md and DESIGN.mdThe current-state PRODUCT.md and DESIGN.md are descriptive, not authored — there is no interview to run because the user is not defining intent here, the agent is describing the existing site. Write them directly using impeccable's format specs:
reference/teach.md. Populate Register from the brand surface
(sites that read as marketing/landing → brand; tools/dashboards →
product; ambiguous → brand with a note). Populate Users,
Product Purpose, Brand Personality, Anti-references, and
Design Principles from the captured copy and the brand surface.
Where the agent must infer, mark the section with _provenance: inferred and a one-line basis sentence.reference/document.md. Populate frontmatter
(colors, typography, rounded, spacing, components) from
the captured tokens. The extensions block of DESIGN.json carries
v1's componentStyle, motifs, and voice arrays so nothing is
lost.Stardust does not invoke $impeccable teach or $impeccable document for the current-state files: those commands write to project
root (the target) and run an interview. Stardust authors the
descriptive snapshot directly. The format spec from impeccable is the
contract; the runtime command is not.
The target-state PRODUCT.md and DESIGN.md at the project root are
written by $stardust direct in Phase 2 of the pipeline, not here.
stardust/current/brand-review.htmlAfter Phase 4 writes the descriptive PRODUCT.md and DESIGN.md, emit
the current-state brand review per
reference/brand-review-template.md.
The brand-review HTML is the first surface a human can eyeball to
verify the extraction before committing to a redesign direction.
Misreads in the JSON (a wrong dominant radius, a missing system
component, a single-page palette bias) are obvious to the eye in five
seconds and invisible in JSON until someone notices. Putting the
review at the end of extract catches misreads while they are still
cheap to fix — re-extract is fast; re-direct + re-prototype is not.
The template is mandatory. In particular:
reference/brand-review-template.md § Detectors. Each rule is
mechanical; emit a tension card whenever the trigger condition
matches. The review may ship with zero tensions if the data is
too thin to evaluate, but the detectors must always be run._brand-extraction.json § type under Typography).If the data for a section is missing, omit the section — do not fabricate placeholders. The coverage callout at the top reflects what is missing.
After all Phase 2-5 writes succeed:
Update stardust/state.json (schema in
skills/stardust/reference/state-machine.md):
site.originUrl, site.extractedAt, site.pageCap,
site.totalDiscovered, site.crawledpages[] — one entry per crawled page with status: "extracted",
filled currentStatePath, empty prototypePath and migratedPathPrint a one-screen summary:
Extracted https://example.com (5/38 pages, sitemap.xml)
stardust/current/
PRODUCT.md (register: brand, inferred from landing)
DESIGN.md (5 colors, 2 type families, 3 motifs)
brand-review.html (4 tensions surfaced)
pages/ (5 files)
assets/logo.svg (extracted from inline SVG)
_brand-extraction.json
_crawl-log.json
Per-page evidence:
slug live waitMode waitMs status
/ yes medium 2380 200
/about yes medium 2110 200
/pricing yes medium 1940 200
/products yes medium 2640 200
/contact yes domcontentloaded(fb) 8000 200
Wait summary: 4 resolved at medium (avg 2.4s), 1 fallback (timed out at 8s)
→ /contact may be under-captured; consider --refresh
Open stardust/current/brand-review.html to verify the extraction
before running $stardust direct.
Coverage note: extracted 5 of 38 discovered pages. The brand
surface and brand-review use cross-page aggregation, so 5 pages
covering distinct templates is usually sufficient. To extract
more, re-run with --cap <N> (e.g. --cap 25) or list specific
slugs with --pages.
Next: $stardust direct (resolve a redesign direction)
The per-page evidence table is mandatory. The live column
is yes when _provenance.renderedBy === "playwright" AND
waitMs > 0, else no. A no row means the page record was
not produced by a live Playwright render — this should never
happen given the write-time guard, but the visible column is
the defense-in-depth signal that catches the failure mode
when it does (the 2026-04-30 lovesac synthesis bug went four
phases deep before being caught because no report column
surfaced the missing provenance). A maintainer scanning the
summary should see yes on every row.
Compute the wait summary by grouping each page's _provenance.waitMode
and averaging waitMs. List slugs whose waitMode ends in
(fallback) (rendered as (fb) in the table for width) as
candidates for --refresh.
| Path | Purpose |
|---------------------------------------------|-----------------------------------------------------|
| stardust/current/PRODUCT.md | Descriptive strategy of the existing site (impeccable format) |
| stardust/current/DESIGN.md | Descriptive visual system (Stitch format) |
| stardust/current/DESIGN.json | Sidecar with extensions for motifs, voice, components |
| stardust/current/brand-review.html | Self-contained visual review of the extraction (first eyeball-able artifact) |
| stardust/current/pages/<slug>.json | Per-page parsed structure + content |
| stardust/current/assets/logo.<ext> | Extracted logo |
| stardust/current/assets/media/ | Extracted media referenced by pages |
| stardust/current/assets/screenshots/ | Per-page viewport screenshots (used by brand-review) |
| stardust/current/_brand-extraction.json | Consolidated brand surface (palette, type, motifs, voice, system components) |
| stardust/current/_crawl-log.json | Discovery + crawl audit trail |
| stardust/state.json | Updated with site + per-page status |
Per state-machine.md: stardust does not lock. Two concurrent extracts
on the same project are last-write-wins. Document this in the user
report; do not engineer around it.
_crawl-log.json,
end with a partial state. State.json reflects only successfully
extracted pages. User can re-run; already-extracted pages are
skipped unless --refresh <slug>.reference/playwright-recipe.md § Response validation. Each
produces a distinct error class (HTTPError, ContentTypeError,
EmptyPageError) recorded in _crawl-log.json#crawl.failures[].
Failed pages do not appear in state.json as extracted —
they appear only in the failure log. Without this validation a 5xx
page silently lands as an empty success and propagates wrong data
to direct and prototype.ERR_HTTP2_PROTOCOL_ERROR,
ERR_QUIC_PROTOCOL_ERROR, or hangs through the hard-cap on a
TLS/H2 fingerprint check, the issue is JA3/H2 fingerprinting on
bundled-chromium-default headless mode — not auth, not network.
Switch to headless: false, channel: 'chrome' per
reference/playwright-recipe.md § Bot-management fallback. Do
not retry headless: it will fail identically. The headed
fallback works against most enterprise / commerce origins;
playwright-extra + stealth plugin is a non-standard escape
hatch for the residual cases. The headed window pops visibly,
which is acceptable for interactive runs and unacceptable for
unattended pipelines — surface this to the user when first
triggered.reference/playwright-recipe.md § Wait modes), fall back to
domcontentloaded and capture what is rendered. Record the
fallback in the per-page _provenance.waitMode and surface in the
wait-summary line of the final report.errorClass: "ProvenanceMissing" in
_crawl-log.json#crawl.failures[]) and continue. Synthesizing
a page record from _brand-extraction.json plus URL patterns
plus captured photos at "semantically matching" template
positions is forbidden. This was the 2026-04-30 lovesac.com
failure — 20 of 25 pages synthesized this way and the cascade
ran four phases on the synthesized data before the gap was
caught by a meta-question. The synthesis shortcut produces
output indistinguishable from a successful run and propagates
fabricated content through every downstream phase.When invoked with --prep, extract runs an extended pass that
prepares the inventory for migration. Discovery-mode runs (without
--prep) are unchanged: small cap, no typing, no module detection,
presales-friendly. --prep is the gesture that says "the user is
committing to migrate; build the data structure migrate consumes."
--prep adds five things on top of the standard procedure:
--prep implies --all. Migration coverage requires the full
inventory — the small discovery cap (5 pages) is insufficient. The
cap-respecting selection logic from reference/ia-extraction.md
§ Page selection still applies for ordering and junk-filtering;
it just doesn't truncate.
When --prep is heavy enough that the agent delegates extraction
to a sub-agent (a presales-shaped pattern when the inventory is
large), the sub-agent prompt must:
_brand-extraction.json
slug | waitMode | waitMs | fetchedAt | httpStatus. The
parent agent reads this table on completion and aborts if
any row is missing or shows waitMs: 0.These three are mandatory; missing any of them in the sub-agent
prompt is itself a recipe violation. The cascade-level guard in
prepare-migration validates the resulting per-page JSONs via
validateProvenance() regardless — but a well-formed sub-agent
return makes the failure cheaper to diagnose.
For each extracted page, infer the type field from URL pattern
and content shape (LLM judgment). Catalog from
skills/stardust/reference/state-machine.md § Page types:
landing | article | listing | program | form | static | unique.
Write the inferred type to state.json.pages[].type. The user
confirms or refines during direct --prep. Discovery-mode runs
leave type as null.
After Phase 3 (brand-surface extraction), scan extracted pages for
recurring structural patterns. A pattern that appears in N+
pages with similar shape (same sequence of elements, same
data-section / data-purpose, similar text shape) is surfaced
as a module candidate.
Detection consumes per-page captured fields in this priority
order. Each higher signal is weighted more heavily in the
match-score; lower signals are tie-breakers and corroboration,
not primary evidence. The priority exists because higher-up
fields are explicitly extracted and structured (no parsing
ambiguity), while the bottom of the list (landmarks[].innerText
substring search) is fragile against capture variations and was
the source of the 2026-04-29 sliccy.com under-detection (0
hits for pre-footer-shell, 1 of 2 hits for install-tile —
both modules genuinely present on every page, both invisible
because the substrings being searched lived past the truncation
boundary that has since been removed).
pages/<slug>.json#headings[] — cross-page repeats of
the same heading text in the same level. Highest signal:
structured, explicit, captured in full regardless of body
length.pages/<slug>.json#ctas[] labels — cross-page repeats
of the same CTA label appearing on similar surfaces.pages/<slug>.json#media.cssBackgrounds[] URLs — same
asset URL on multiple pages is a strong system-component
signal (already specced as a system-component candidate in
reference/brand-surface.md § Cross-page CSS-background
reuse; module detection consumes the same signal at finer
granularity).pages/<slug>.json#forms[] actions — cross-page repeats
of the same form action URL. Newsletter / contact / search
forms are the typical hits.pages/<slug>.json#components.componentsByLandmark when
present (per future current-state-schema.md extension):
per-landmark counts of cards / grids / etc.landmarks[].innerText — lowest
signal. Use only as corroboration once a candidate has
already passed the higher-signal checks; never as the
primary detector.A candidate that fires on signals 1 + 2 above the threshold is
high-confidence; a candidate that fires only on 6 should be
treated as speculative and surfaced as such for the user to
confirm in direct --prep.
Candidate output is a draft entry under
DESIGN.json.extensions.modules[]:
{
"id": "candidate-<short-hash>",
"slots": [
{ "name": "<inferred>", "type": "text|link|image|...", "required": false }
],
"instances": [
{ "slug": "home", "selector": "..." },
{ "slug": "donate", "selector": "..." }
],
"status": "candidate"
}
The status: "candidate" flag distinguishes draft entries from
confirmed modules. direct --prep is where the user names them
and promotes (or prunes).
Per-page JSON (current/pages/<slug>.json) gains a slots
section that identifies content slots per page-type:
article pages: headline, deck, byline, meta,
lead-image, body, pullquotes[], related[]listing pages: index-headline, filter-controls,
card-grid with typed sub-slots per cardprogram pages: program-headline, summary,
feature-grid, cta-bandlanding, form, static — typed slots inferred per
content shapeSchema additions live in reference/current-state-schema.md
§ Typed slots (extend that doc separately).
Replace Phase 6's standard report with the prep summary format:
extract --prep complete
=======================
Inventory: 127 pages crawled (5 prior, 122 new)
Provenance: 127/127 live (every page has Playwright evidence)
Page types: landing 1 · article 84 · listing 6 · program 12 · form 3 · static 18 · unique 3
(LLM-inferred; refine in direct --prep)
Module candidates: 8
hotline-211 5 instances (home, get-help, donate, news, programs)
donate-band 12 instances (home, donate, news, all article footers)
story-card 7 instances (home, news, programs)
...
Typed slots: filled per page-type (see current/pages/<slug>.json § slots)
Next: $stardust direct --prep (confirm types, name modules)
The Provenance: <live>/<total> live line is mandatory in
prep-mode output. When the ratio is anything other than
<total>/<total> the prep run has failed the synthesis guard;
list the affected slugs as a sub-bullet and treat the prep run
as incomplete (the cascade-level guard in
prepare-migration SKILL.md surfaces the same check between
phases).
Default mode (no --prep) is unchanged. The flag is intended for
the prepare-migration orchestrator, though direct invocation is
supported.
reference/playwright-recipe.md — viewport, capture list, logo locator chain.reference/ia-extraction.md — sitemap + BFS crawl + cap procedure.reference/current-state-schema.md — per-page JSON schema.reference/brand-surface.md — consolidated brand-surface schema.reference/brand-review-template.md — current-state brand-review HTML contract + Tensions detectors.skills/stardust/reference/state-machine.md — state.json contract.skills/stardust/reference/artifact-map.md — provenance shape.development
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