Based on the information provided in the extracts, there isn't a specific mention of an API endpoint to read data directly from a source. However, Airbyte provides a way to build custom connectors to read data from various sources. You can learn more about connector development [here](
https://docs.airbyte.com/connector-development/). Once you've set up your source and connection, you can trigger data syncs using the web UI, octavia-cli, or by calling the public API. After the sync is complete, the data is loaded into your specified destination. You can then perform transformations or implement business logic on this data. More details on this process can be found [here](
https://docs.airbyte.com/operator-guides/transformation-and-normalization/transformations-with-sql). Please note that the actual reading of data from the source is handled internally by Airbyte and its connectors, and may not be exposed directly as an API endpoint. For more specific details or use cases, you may want to refer to the official Airbyte API documentation or reach out to the Airbyte community for support.