simple example

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/python
+{
+	"name": "Python 3",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/python:2-3.13-trixie"
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "pip3 install --user -r requirements.txt",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.gitignore

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+.venv
+output_crates

main.py

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+#!/usr/bin/env python3
+
+from typing import List, Optional, Union
+
+from pydantic import BaseModel
+from lib_ro_crate_schema.crate.decorators import ro_crate_schema, Field
+from lib_ro_crate_schema.crate.schema_facade import SchemaFacade
+from lib_ro_crate_schema.crate.jsonld_utils import add_schema_to_crate
+from rocrate.rocrate import ROCrate
+from pathlib import Path
+
+
+@ro_crate_schema(ontology="https://schema.org/PropertyValue")
+class PropertyValue(BaseModel):
+    name: str = Field(json_schema_extra={
+                      "ontology": "https://schema.org/name"})
+    value: Union[str, bool, int, float, 'PropertyValue', List['PropertyValue']] = Field(json_schema_extra={
+        "ontology": "https://schema.org/value"})
+    unitText: Optional[str] = Field(default=None, json_schema_extra={
+        "ontology": "https://schema.org/unitText"})
+
+
+@ro_crate_schema(ontology="https://schema.org/Person")
+class Person(BaseModel):
+    name: str = Field(json_schema_extra={
+                      "ontology": "https://schema.org/name"})
+    givenName: str = Field(json_schema_extra={
+        "ontology": "https://schema.org/givenName"})
+    familyName: str = Field(json_schema_extra={
+        "ontology": "https://schema.org/familyName"})
+
+
+@ro_crate_schema(ontology="https://schema.org/Dataset")
+class Dataset(BaseModel):
+    name: str = Field(json_schema_extra={
+        "ontology": "https://schema.org/name"})
+    description: str = Field(json_schema_extra={
+        "ontology": "https://schema.org/description"})
+    creator: Union[Person, List[Person]] = Field(json_schema_extra={
+        "ontology": "https://schema.org/creator"})
+    additionalProperty: Union[PropertyValue, List[PropertyValue]] = Field(json_schema_extra={
+        "ontology": "https://schema.org/additionalProperty"})
+
+
+def main():
+    facade = SchemaFacade()
+    facade.add_all_registered_models()
+
+    creator_1 = Person(givenName="John", familyName="Doe", name="Doe, John")
+    creator_2 = Person(givenName="Jane", familyName="Doe", name="Doe, Jane")
+
+    metadata = [
+        PropertyValue(name="data_collection", value=[
+            PropertyValue(name="wavelength", value=3.14, unitText='angstrom'),
+            PropertyValue(name="energy", value=3, unitText='keV'),
+            PropertyValue(name="detector", value="Eiger"),
+        ])
+    ]
+
+    dataset = Dataset(name="Aare dataset", description="This dataset comes from a RO-Crate",
+                      creator=[creator_1, creator_2], additionalProperty=metadata)
+
+    facade.add_model_instance(dataset, "_:b0")
+
+    # Create RO-Crate
+    crate = ROCrate()
+    crate.name = "Minimal Example"
+    crate.description = "A minimal RO-Crate with one Person"
+
+    final_crate = add_schema_to_crate(facade, crate)
+
+    # Export
+    # output_path = Path("output_crates/minimal_example")
+    # output_path.mkdir(parents=True, exist_ok=True)
+    # final_crate.write(output_path)
+
+    buffer = b''.join(final_crate.stream_zip())
+    import requests
+    import os
+    response = requests.post(
+        "http://pc17166.psi.ch:8080/api/v1/ro-crate/import",
+        headers={
+            "content-type": "application/zip",
+            "accept": "application/json",
+            "api-key": os.environ["API_KEY"]
+        }, data=final_crate.stream_zip())
+    response.raise_for_status()
+    print(response.json())
+
+    # print(f"✓ RO-Crate exported to: {output_path}")
+    # print(f"✓ Entities: {len(final_crate.get_entities())}")
+
+
+if __name__ == "__main__":
+    main()

requirements.txt

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+--index-url https://pypi.psi.ch/simple
+--extra-index-url https://gitea.psi.ch/api/packages/potier_f/pypi/simple/
+
+annotated-types==0.7.0
+arcp==0.2.1
+cachetools==7.0.4
+certifi==2026.2.25
+charset-normalizer==3.4.5
+click==8.3.1
+frozendict==2.4.7
+gitdb==4.0.12
+GitPython==3.1.41
+html5rdf==1.2.1
+idna==3.11
+Jinja2==3.1.6
+lib-ro-crate-schema==0.2.2
+lxml==6.0.2
+MarkupSafe==3.0.3
+owlrl==7.1.4
+packaging==26.0
+prettytable==3.17.0
+pydantic==2.12.5
+pydantic_core==2.41.5
+PyLD==2.0.4
+pyparsing==3.3.2
+pyshacl==0.31.0
+python-dateutil==2.9.0.post0
+rdflib==7.6.0
+requests==2.32.5
+rocrate==0.14.2
+setuptools==78.1.1
+six==1.17.0
+smmap==5.0.2
+typing-inspection==0.4.2
+typing_extensions==4.15.0
+urllib3==2.6.3
+wcwidth==0.6.0