card: link projectsim API docs

README.md

@@ -31,6 +31,7 @@ extra_gated_fields:
     options:
       - "No"
       - "Yes"
+extra_gated_prompt: "Want assets of your own objects? See the [projectsim API](https://docs.projectsim.ai/?utm_source=hf_gate)."
 ---
 
 # projectsim Articulated Boxes
@@ -41,6 +42,7 @@ extra_gated_fields:
 
 <p align="center">
   <a href="https://huggingface.co/spaces/projectsim/lab?class=cardboard_box"><img src="https://huggingface.co/datasets/huggingface/badges/resolve/main/open-in-hf-spaces-xl-dark.svg" alt="Open in HF Spaces"></a>
+  <a href="https://docs.projectsim.ai/?utm_source=hf_dataset&utm_content=articulated-boxes"><img src="https://img.shields.io/badge/projectsim-API_docs-7a2d26?style=for-the-badge" alt="projectsim API docs" height="40"></a>
 </p>
 
 > **Try it before you download.** Open the [Boxes tab in projectsim Lab](https://huggingface.co/spaces/projectsim/lab?class=cardboard_box),
@@ -115,6 +117,15 @@ See [manifest.example.json](manifest.example.json) for the schema. Every box
 carries its `source_variant` — the generator's variant id — so any box can be
 traced, re-posed, re-textured, or re-exported on request.
 
+## Generate your own
+
+This dataset is sample output from the projectsim pipeline. For sim-ready
+assets of *your* objects, use the [projectsim API](https://docs.projectsim.ai/?utm_source=hf_dataset&utm_content=articulated-boxes):
+
+- **Standard asset** - one image in, a sim-ready asset out
+- **Measured asset** - mm-accurate, from a ChArUco-board capture
+- **Variation sets** - procedural or high-fidelity families from a single object
+
 ## License
 
 CC-BY-4.0. projectsim by [Kaedim](https://www.projectsim.ai).