ornament-style-mono
About
This Claude Skill generates monochrome ornamental patterns based on Alexander Speltz's classical taxonomy, using AI-assisted image generation. It helps developers create decorative borders, medallions, or friezes in a single color, producing line art or pen-and-ink renderings. Use it for exploring historical ornament styles through generative AI or creating reference imagery for design projects.
Quick Install
Claude Code
Recommendednpx skills add pjt222/agent-almanac -a claude-code/plugin add https://github.com/pjt222/agent-almanacgit clone https://github.com/pjt222/agent-almanac.git ~/.claude/skills/ornament-style-monoCopy and paste this command in Claude Code to install this skill
Documentation
Ornament Style — Monochrome
Mono ornament: art history + AI image gen. Rooted in period + motif from Speltz's Styles of Ornament (1904).
Use When
- Decorative borders, medallions, friezes, panels in single color
- Explore historical ornament via gen AI
- Line art, silhouette, woodcut, pen-and-ink of classical motifs
- Reference imagery for design / illustration / edu
- Study structural grammar across cultures + periods
In
- Required: Period or style (or "surprise me")
- Required: Application (border, medallion, frieze, panel, tile, standalone)
- Optional: Motif pref (acanthus, palmette, meander, arabesque)
- Optional: Rendering (line art, silhouette, woodcut, pen-and-ink, engraving)
- Optional: Resolution + aspect
- Optional: Seed
Do
Step 1: Pick period
Each period has characteristic motifs + structural principles.
Historical Ornament Periods:
┌───────────────────┬─────────────────┬──────────────────────────────────────────┬──────────────────────┐
│ Period │ Date Range │ Key Motifs │ Mono Suitability │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Egyptian │ 3100–332 BCE │ Lotus, papyrus, scarab, winged disk, │ Excellent — bold │
│ │ │ uraeus, ankh │ geometric forms │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Greek │ 800–31 BCE │ Meander/Greek key, palmette, anthemion, │ Excellent — high │
│ │ │ acanthus, guilloche, egg-and-dart │ contrast geometry │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Roman │ 509 BCE–476 CE │ Acanthus scroll, rosette, grotesque, │ Very good — dense │
│ │ │ candelabra, rinceau, trophy │ carved relief style │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Byzantine │ 330–1453 CE │ Interlace, vine scroll, cross forms, │ Good — flat │
│ │ │ basket weave, peacock, chi-rho │ silhouette style │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Islamic │ 7th–17th c. │ Arabesque, geometric star, muqarnas, │ Excellent — pure │
│ │ │ tessellation, knotwork, calligraphic │ geometric abstraction│
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Romanesque │ 1000–1200 CE │ Interlace, beast chains, chevron, │ Very good — heavy │
│ │ │ billet, zigzag, inhabited scroll │ carved stone quality │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Gothic │ 1150–1500 CE │ Trefoil, quatrefoil, crocket, │ Very good — tracery │
│ │ │ finial, tracery, naturalistic leaf │ and window patterns │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Renaissance │ 1400–1600 CE │ Grotesque, candelabra, putto, │ Good — engraving │
│ │ │ medallion, festoon, cartouche │ and woodcut styles │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Baroque/Rococo │ 1600–1780 CE │ C-scroll, S-scroll, shell, asymmetric │ Moderate — complex │
│ │ │ cartouche, garland, ribbon │ forms benefit from │
│ │ │ │ color for depth │
├───────────────────┼─────────────────┼──────────────────────────────────────────┼──────────────────────┤
│ Art Nouveau │ 1890–1910 CE │ Whiplash curve, organic line, lily, │ Excellent — defined │
│ │ │ dragonfly, femme-fleur, sinuous vine │ by line quality │
└───────────────────┴─────────────────┴──────────────────────────────────────────┴──────────────────────┘
- User specified → confirm + note motifs
- "Surprise me" → random, weight "Excellent" mono suitability
- Note 2-3 primary motifs for prompt
→ Period IDed w/ 2-3 candidate motifs + understanding why mono works (or challenges).
If err: not in table (Celtic, Aztec, Art Deco) → WebSearch / WebFetch ornamental vocab + construct equivalent entry w/ motifs + mono assessment.
Step 2: Analyze motif structure
Structural grammar before prompt.
-
Symmetry type:
- Bilateral (mirror — most organic)
- Radial (rotational — rosettes, medallions, stars)
- Translational (repeating unit — friezes, borders, tessellations)
- Point (central radiating — compass roses, mandalas)
-
Geometric scaffold:
- Circle (rosettes, medallions, roundels)
- Rectangle (panels, metopes, cartouches)
- Triangle (pediment fills, spandrels)
- Band (friezes, borders, running)
-
Fill pattern:
- Solid (silhouette, no internal detail)
- Line-filled (hatching, parallel lines)
- Open (outline, negative space)
- Mixed (outline + selective internal)
-
Edge treatment:
- Clean (in frame)
- Organic bleed (extends or dissolves)
- Interlocking (connects adjacent — for repeats)
→ Structural desc like "bilateral, band scaffold, line-filled, interlocking edges" → informs prompt.
If err: structure unclear → WebSearch "[period] [motif] ornament", analyze first results. Speltz plates public domain + online.
Step 3: Construct mono prompt
Template:
[Rendering style] of [motif name] ornament in the [period] style,
[composition type], monochrome, black and white,
[structural details from Step 2],
[application context], [additional qualifiers]
Rendering Styles:
detailed line art— clean vector-like, no fillsblack silhouette— solid black on whitewoodcut print— bold carved + grain texturepen-and-ink illustration— fine + hatchingcopperplate engraving— precise parallel lines, tonal gradationstencil design— connected negative space, no floating islands
Composition Qualifiers:
symmetrical,centered,repeating pattern,border designisolated motif on white background,continuous friezewithin a circular frame,filling a rectangular panel
Mono Constraint (always include):
monochrome, black and white, no color, no shading(pure line art)monochrome, black and white, high contrast(silhouette)monochrome, black and white, fine hatching for depth(engraving)
Example Prompts:
detailed line art of Greek meander border pattern, continuous frieze, monochrome, black and white, geometric precision, repeating unit, classical antiquity styleblack silhouette of Egyptian lotus and papyrus ornament, symmetrical panel design, monochrome, black and white, high contrast, temple decoration stylepen-and-ink illustration of Art Nouveau whiplash curve with lily motif, vertical panel, monochrome, black and white, sinuous organic lines, Alphonse Mucha influence
→ Prompt 20-40 words: rendering, motif, period, composition, mono constraint.
If err: too vague → add Step 2 specifics. Too complex (>50 words) → simplify, keep structural essentials. Z-Image responds to clear specific — avoid abstract/conceptual.
Step 4: Configure params
Resolution by Application:
┌────────────────────┬─────────────────────┬────────────────────────────────┐
│ Application │ Recommended │ Rationale │
├────────────────────┼─────────────────────┼────────────────────────────────┤
│ Medallion / Roundel│ 1024x1024 (1:1) │ Radial symmetry needs square │
│ Tile / Repeat Unit │ 1024x1024 (1:1) │ Square for seamless tiling │
│ Horizontal Frieze │ 1280x720 (16:9) │ Wide format for running border │
│ Vertical Panel │ 720x1280 (9:16) │ Portrait format for columns │
│ Wide Border │ 1344x576 (21:9) │ Ultrawide for architectural │
│ General / Flexible │ 1152x896 (9:7) │ Balanced landscape format │
│ Large Detail │ 1536x1536 (1:1) │ Higher res for fine line work │
└────────────────────┴─────────────────────┴────────────────────────────────┘
- Resolution per context
steps8 (default) initial; 10-12 for fine line detailshift3 (default)random_seed: truefor explore orfalsew/ seed for reproducibility- Record params
→ Complete param set: resolution, steps, shift, seed strategy.
If err: unsure → 1024x1024 (1:1). Works for most + fastest.
Step 5: Generate
Z-Image MCP call.
mcp__hf-mcp-server__gr1_z_image_turbo_generatew/:prompt: from Step 3resolution: from Step 4steps: from Step 4shift: from Step 4random_seed: from Step 4seed: ifrandom_seedfalse
- Record returned seed
- Note gen time
→ Image + seed. Image shows recognizable ornamental forms in mono.
If err: MCP unavail → verify hf-mcp-server. Tool error → simplify prompt + retry. Fully abstract no ornamental char → prompt needs specific structural lang → Step 3.
Step 6: Evaluate
4 criteria.
Monochrome Ornament Evaluation Rubric:
┌─────────────────────┬───────────────────────────────────────────────────────┐
│ Criterion │ Evaluation Questions │
├─────────────────────┼───────────────────────────────────────────────────────┤
│ 1. Symmetry │ Does the design exhibit the intended symmetry type? │
│ │ Is it visually balanced? Are repeating elements │
│ │ consistent? │
├─────────────────────┼───────────────────────────────────────────────────────┤
│ 2. Monochrome │ Is the image truly black and white? Are there │
│ Fidelity │ unwanted grays, colors, or gradients? Does the │
│ │ rendering style match the request? │
├─────────────────────┼───────────────────────────────────────────────────────┤
│ 3. Period Accuracy │ Would this design be recognizable as belonging to │
│ │ the specified period? Are the motifs period- │
│ │ appropriate? Does it avoid anachronistic elements? │
├─────────────────────┼───────────────────────────────────────────────────────┤
│ 4. Detail Level │ Is the level of detail appropriate for the rendering │
│ │ style? Line art should have clean lines; woodcut │
│ │ should show bold strokes; engraving should show │
│ │ systematic hatching. │
└─────────────────────┴───────────────────────────────────────────────────────┘
- Score: Strong / Adequate / Weak
- Note specific obs
- ≥3 Strong → success
- ≥2 Weak → back to Step 3
→ Scored eval w/ specific obs. First-gen typically Adequate on 2-3.
If err: all Weak → too abstract or complex. Simplify: one motif, one rendering, explicit "monochrome black and white". Or switch to higher-mono-suitability period.
Step 7: Iterate or finalize
Strategies:
- Seed-locked: same seed, adjust prompt slightly → evolves composition keeping structure
- Random explore:
random_seed: truew/ same prompt → variations - Prompt evolution: modify rendering, add/remove motif details, adjust composition
Iteration Budget: ≤3 per concept. After 3, reconsider period/motif/rendering fundamentally.
- Per Step 6 weakness:
- Weak symmetry → "perfectly symmetrical" / "mirror symmetry"
- Color leak → "pure black and white, no gray tones, no color"
- Wrong period feel → specific period artists/monuments
- Insufficient detail → steps 10-12, add "highly detailed"
- Regen via Step 5
- Re-eval Step 6
- Accept when ≥3 Strong or budget exhausted
→ Improved after 1-2 iter, or accept current best.
If err: not improving → fundamental concept doesn't translate to model. Try different motif from same period, or switch rendering (line art → silhouette).
Step 8: Document
- Record:
- Period: name + dates
- Motif: primary
- Rendering: line art / silhouette / woodcut
- Final Prompt: exact accepted
- Seed: for reproduction
- Resolution: used
- Steps/Shift: gen params
- Evaluation: brief criteria scores
- Iterations: count + key changes
- Art historical obs — gen vs historical
- Suggest applications: print, digital border, textile, etc.
→ Reproducible record allows exact regen + design lineage.
If err: doc excessive → at min: final prompt + seed. Sufficient to reproduce.
Key Motifs Reference
Across periods, core vocabulary of classical ornament:
- Acanthus: deeply lobed leaf; Greek origin, dominant Roman + Renaissance
- Palmette: fan-shaped leaf cluster; Egyptian + Greek, ancestor of anthemion
- Anthemion: alternating palmette-and-lotus frieze; Greek, endlessly adapted
- Guilloche: interlocking circles forming chain; ancient, universal
- Meander / Greek Key: angular spiral continuous band; quintessentially Greek
- Arabesque: infinitely extending vegetal scroll; Islamic, non-representational by principle
- Trefoil / Quatrefoil: 3/4-lobed forms in circle; Gothic tracery
- Rosette: radially symmetric flower; universal across periods
- Scroll (C and S): spiraling forms; Baroque + Rococo signature
- Grotesque: fantastical human-animal-vegetal hybrid; Roman, revived Renaissance
- Interlace / Knotwork: woven bands no beginning or end; Celtic, Islamic, Byzantine
- Lotus: stylized water lily; Egyptian origin, spread across Asian traditions
Check
- Specific period selected w/ rationale
- Motif structure analyzed (symmetry, scaffold, fill, edge)
- Prompt: explicit mono constraint ("black and white" or equivalent)
- Prompt: rendering style (line art, silhouette, woodcut)
- Resolution matches application
- Image evaluated 4-point rubric
- Seed recorded
- Final design documented w/ prompt, seed, params
Traps
- Omit mono constraint: Z-Image defaults color. No explicit "monochrome, black and white" → color output. Add early, not afterthought
- Over-specify prompt: >50 words → confused results. One motif, one rendering, one composition. Quality from clarity, not quantity
- Ignore period grammar: each period has rules. Gothic trefoils in Egyptian frames, Baroque scrolls in Greek meander → incoherence. Stay in period vocabulary
- Expect vector: Z-Image = raster. True vector → manual tracing from generated image
- Skip structural analysis: period → prompt w/o analyzing motif structure → generic "decorative" not historically grounded
→
ornament-style-color— polychromatic companion; adds palette + color-to-structuremeditate— focused attention + visual imagination for ornamental compositionreview-web-design— design review (hierarchy, rhythm, balance) applies
GitHub Repository
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