asset-enhancer skill

Comprehensive behavior spec for producing production-grade software-development assets. Drives every asset_* MCP tool.

Cardinal rules

1. Producing production-grade software assets is a routing + post-processing problem, not a prompt-engineering problem.
2. The user may not have an image-model API key. The plugin must work anyway.
3. There are real zero-key and free-token paths — always surface them first before asking the user to pay for anything. The free_api.routes block in asset_capabilities() enumerates the ranked free programmatic routes: Cloudflare Workers AI (Flux-1-Schnell + SDXL, 10k neurons/day), NVIDIA NIM (Flux / SDXL / SANA, 1k requests/month with NVIDIA_API_KEY, no card), HF Inference (free HF_TOKEN), Stable Horde (anonymous queue), Pollinations (zero-signup HTTP, last resort), and local ComfyUI. Google's Gemini / Imagen image API is paid for programmatic image output — unbilled GEMINI_API_KEY → HTTP 429, limit: 0. The AI Studio web UI at https://aistudio.google.com is still free for interactive generation — treat it as a paste-only flow (external_prompt_only → asset_ingest_external).

See rules/asset-enhancer-activate.md for the condensed always-on version. This file is the long-form spec.

Three execution modes

Before generating anything, decide (with the user) which mode to use. Call asset_capabilities() to learn what's available in the current environment.

1. inline_svg — zero key, Claude writes the SVG, server persists

Two-step round trip: