asset-generator

Asset Generator

A task-aware router for asset-generating MCPs. The skill is the decision layer; the actual provider calls live in mcp/servers/asset-router/.

When to trigger

• "Generate concept art for…"
• "Make me a logo / icon / hero image…"
• "Pixel sprite of…"
• "Voiceover saying…"
• "Music loop in {genre}…"
• "Short video clip of…"
• Any "give me {N} variants of…" where the asset is one of the above.

Decision flow

1. Classify the task: image | voice | music | video.
2. Pick a style descriptor: photoreal | stylized | vector | pixel | line-art | painterly.
3. Pick a constraint surface:
     - cost-sensitive  → SDXL Lightning / smaller models
     - quality-final   → Flux 1.1 Pro / Recraft v3 / Suno v4.5
     - commercial-safe → Firefly via the Creative Cloud connector
     - on-brand pixel  → SDXL + pixel LoRA, or Recraft pixel
4. Compose the prompt using the templates in knowledge/13-asset-pipelines.md §13.5.
5. Cap counts: 4 candidates per call; up to 3 iterations; provenance recorded.
6. Call asset-router MCP — pick `provider` only if the user explicitly asked.
7. On safety reject: rephrase once, return the reason if it fails again.
8. Emit a Markdown table of outputs with cost + license + seed; sidecar provenance JSON.

Calling the MCP

// Inside Claude Code or Claude.ai with the asset-router MCP installed.
const out = await tools.asset_router.generate_image({
  prompt: "isometric cozy farmhouse, warm dusk lighting, painterly",
  style: "stylized",
  ratio: "1:1",
  count: 4,
  seed: 0xC0FFEE,         // optional — re-rolls deterministically
});
// out: [{ url, provider, model, cost_cents, seed, license, provenance_url }]

For voice / music / video, the same MCP exposes generate_voice, generate_music, generate_video with task-shaped inputs (see knowledge/13-asset-pipelines.md §13.2).

Cost discipline

When stub-only (no API keys), each call returns a deterministic placeholder (constant gradient, silent WAV, black MP4) plus the metadata it would have produced. Recipes still run end-to-end; the user just sees placeholders.

Prompt-template selection

Pull templates from knowledge/13-asset-pipelines.md §13.5:

• Logo → Flux/Recraft, style: minimal | playful | luxury, --ratio 1:1.
• Game tile → SDXL pixel, palette_size: 8, seamless edges.
• Character sprite sheet → Flux + ControlNet pose, 8 frames per cycle.
• Voiceover → ElevenLabs, voice id, settings tuned to use case.
• Music brief → Suno, mood + genre + BPM + key + duration.

Composition with other skills

• palette-generator → run after image gen to extract a usable palette.
• sprite-atlas-builder → pack generated sprites into an atlas.
• critique-loop → ask Claude to score the result against the brief and decide whether to iterate.
• artifact-game-builder → drop the assets into a runnable game artifact.

The recipes/agentic-asset-pipeline.md recipe stitches all five into one end-to-end run.

Safety rails

• Never run "generate {large N}" without a confirm step. 64 generations × $0.04 = $2.56; surface the estimate via asset-router.estimate_cost() first.
• Always emit provenance. Don't ship outputs without {provider, model, seed, prompt, cost, license, timestamp}.
• Refuse identifiable-likeness prompts unless the user has uploaded a reference they own. ElevenLabs voice cloning especially.
• Tag commercial-restricted outputs in the provenance file. Suno's terms vary by tier; ElevenLabs' likeness tooling is restricted.
• Don't paste API keys into artifacts. All provider calls go through the MCP, which reads keys from the local environment only.

Output shape

1. Brief — one-line summary of what was generated and why this provider/model.
2. Markdown table of outputs with: thumbnail link, provider, model, cost, license, seed.
3. Provenance JSON sidecar (one per output).
4. Recommended next step — pick / iterate / refine, or "drop into <skill>".

Further reading

• knowledge/13-asset-pipelines.md — full provider matrix and prompt templates.
• knowledge/11-creative-connectors.md — Adobe Firefly via Creative Cloud connector for commercial-safe output.
• mcp/servers/asset-router/ — the routing MCP.
• skills/critique-loop/SKILL.md — pair this skill with critique-loop for self-graded iteration.
• recipes/agentic-asset-pipeline.md — end-to-end demo.