This repository has nice modules to interact with Odoo using JSON and HTTP requests.

addon	version	maintainers	summary
base_rest	16.0.1.0.0		Develop your own high level REST APIs for Odoo thanks to this addon.
base_rest_auth_api_key	16.0.1.0.0		Base Rest: Add support for the auth_api_key security policy into the openapi documentation
base_rest_datamodel	16.0.1.0.0		Datamodel binding for base_rest
base_rest_demo	16.0.1.0.0		Demo addon for Base REST
base_rest_pydantic	16.0.1.0.0		Pydantic binding for base_rest
datamodel	16.0.1.0.0		This addon allows you to define simple data models supporting serialization/deserialization
extendable	16.0.1.0.0		Extendable classes registry loader for Odoo
graphql_base	16.0.1.0.1		Base GraphQL/GraphiQL controller
graphql_demo	16.0.1.0.1		GraphQL Demo
pydantic	16.0.1.0.0		Utility addon to ease mapping between Pydantic and Odoo models

addon	version	maintainers	summary
base_rest_auth_jwt	15.0.1.1.0 (unported)		Base Rest: Add support for the auth_jwt security policy into the openapi documentation
base_rest_auth_user_service	15.0.1.0.1 (unported)		Login/logout from session using a REST call
model_serializer	15.0.1.2.0 (unported)		Automatically translate Odoo models into Datamodels for (de)serialization
rest_log	15.0.1.0.0 (unported)		Track REST API calls into DB

This repository is licensed under AGPL-3.0.

However, each module can have a totally different license, as long as they adhere to Odoo Community Association (OCA) policy. Consult each module's __manifest__.py file, which contains a license key that explains its license.

OCA, or the Odoo Community Association, is a nonprofit organization whose mission is to support the collaborative development of Odoo features and promote its widespread use.