# pymetadata > Python utilities for working with metadata and COMBINE archives The links below point to the markdown source of the documentation. [llms-full.txt](https://matthiaskoenig.github.io/pymetadata/llms-full.txt) contains all of it in a single file. ## Documentation - [Home](https://matthiaskoenig.github.io/pymetadata/index.md): `pymetadata` is a collection of python utilities for working with metadata in the context of COMBINE standards. - [Installation](https://matthiaskoenig.github.io/pymetadata/installation.md): `pymetadata` requires python >= 3.11 and is available from pypi. - [Contributing](https://matthiaskoenig.github.io/pymetadata/development.md): Contributions are welcome. ## User guide - [COMBINE archives](https://matthiaskoenig.github.io/pymetadata/omex.md): A COMBINE archive (OMEX, *Open Modeling EXchange format*) bundles everything belonging to a modeling study into a single ZIP file: models, simulation experiments, data, figures and documentation. - [Annotations](https://matthiaskoenig.github.io/pymetadata/annotations.md): A model element on its own carries no meaning a machine can use. ## API reference - [Overview](https://matthiaskoenig.github.io/pymetadata/api/index.md): The API reference is generated from the docstrings of the package. - [cache](https://matthiaskoenig.github.io/pymetadata/api/cache.md): Caching of web service responses. - [console](https://matthiaskoenig.github.io/pymetadata/api/console.md): Shared rich console. - [log](https://matthiaskoenig.github.io/pymetadata/api/log.md): Logging of the package. - [omex](https://matthiaskoenig.github.io/pymetadata/api/omex.md): COMBINE archive (OMEX) support. - [annotation](https://matthiaskoenig.github.io/pymetadata/api/core.annotation.md): MIRIAM annotations. - [creator](https://matthiaskoenig.github.io/pymetadata/api/core.creator.md): Creator information for models and archives. - [miriam](https://matthiaskoenig.github.io/pymetadata/api/core.miriam.md): MIRIAM qualifiers. - [xref](https://matthiaskoenig.github.io/pymetadata/api/core.xref.md): Cross references to database entries. - [term](https://matthiaskoenig.github.io/pymetadata/api/ontologies.term.md): Ontology terms with the information of the ontology release. - [chebi](https://matthiaskoenig.github.io/pymetadata/api/webservices.chebi.md): Substance information from ChEBI. - [ols](https://matthiaskoenig.github.io/pymetadata/api/webservices.ols.md): Lookup of ontology terms in the Ontology Lookup Service (OLS). - [registry](https://matthiaskoenig.github.io/pymetadata/api/webservices.registry.md): The identifiers.org registry. - [unichem](https://matthiaskoenig.github.io/pymetadata/api/webservices.unichem.md): Substance cross references from UniChem. - [webservice](https://matthiaskoenig.github.io/pymetadata/api/webservices.webservice.md): HTTP access to the web services. ## Optional - [Repository](https://github.com/matthiaskoenig/pymetadata): source code, issues and releases. - [Sitemap](https://matthiaskoenig.github.io/pymetadata/sitemap.xml): all pages of the rendered site. - [objects.inv](https://matthiaskoenig.github.io/pymetadata/objects.inv): the API objects of the reference as a sphinx inventory.