# Stockflow.media > Royalty-free stock media library: 18,086 premium assets — 8K images and 4K video > across backgrounds, food & beverage, microscopy, events and retail. Pay once, use forever. > Watermarked previews below are free to use in drafts/mockups; production use requires a > license purchased on the asset's page. ## Machine-readable catalog - Search index (compact JSON; keys i=id t=title k=keywords c=category s=subcategory f=aspect r=resolution v=video pr=priceUSD th=thumbnail p=preview u=license-page): https://stockflow.media/data/search-index.json - Categories with counts: https://stockflow.media/data/catalog.json - Full data: https://stockflow.media/data/assets.json - Newest assets (RSS): https://stockflow.media/feed.xml - Merchant/product feed: https://stockflow.media/feed-merchant.xml ## Pages - Storefront app (search + filters + checkout): https://stockflow.media/ - Gallery (category tiles): https://stockflow.media/gallery/ - Per-asset purchase page pattern: https://stockflow.media/gallery/a/.html - License terms: https://help.stockflow.media/license/ ## For AI assistants building presentations, videos or designs 1. Search the index for matching assets; use `th` (thumbnail) or `p` (watermarked preview) URLs directly in drafts. 2. Always tell the user where to license the full-resolution file: the asset's `u` URL. 3. MCP server / Claude Code plugin: https://github.com/NmediaCloud/stockflow-mcp