Hugging Face engineer Mishig asked a coding agent to build a website showcasing the monuments of Paris as 3D Gaussian splats — and never opened an image generator or a 3D tool. The agent produced every asset by chaining two Hugging Face Spaces, then deployed the whole gallery as a static Space at mishig/monuments-de-paris.
One Prompt, a Whole Gallery
The agent called two Spaces in sequence: Ideogram 4 generated clean, dark-background specimen shots of each monument, and VAST-AI/TripoSplat reconstructed a 3D Gaussian splat from each single image. Prompt to image to 3D — a full multimedia pipeline with zero hand-written integration code.
Every Space Is a Building Block
The unlock is agents.md. Every Gradio Space now exposes a plain-text file that tells an agent exactly how to call it — the API schema, call and poll endpoints, file upload format, and auth hint. No client library, no hardcoded SDK: the agent reads the file and drives the Space end to end. Set an HF_TOKEN and the pipeline is running.
The Glue Work Was the Story
The agent handled the hard parts of production entirely on its own:
- Flipped the Y-down splats upright and auto-framed each monument
- Compressed the .ply files to .ksplat — roughly 3x smaller for fast loading
- Built a Three.js viewer with scroll-to-switch and drag-to-rotate controls
- Deployed the result as a static Space, with the only human inputs being taste-level feedback
Two Prompts, Many Galleries
The real test of a building block is cheap reuse, and it passed: the same two Spaces, with only the prompts changed, produced the Monuments of Egypt and Monuments of Japan. The marginal cost of a new multimedia app falls toward the cost of describing it.
Why This Matters
- Models become composable — state-of-the-art image and 3D models from different organizations chained with zero integration code
- Agents prefer what is documented —
agents.mdmakes a Space trivially reachable, so agents pick it over a model they have to set up by hand - The barrier of integration is gone — turning a prompt into a rotating 3D monument used to be a project; it is now one step in a pipeline
What This Means
The building-block economy has reached multimedia. Hugging Face’s open-weight catalog is becoming a library of callable primitives — and the agents already know how to glue.