ebay_client/README.md

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# eBay REST Client
This workspace contains a Python-first eBay REST client foundation with:
- a shared OAuth 2.0 core
- a shared HTTP transport layer
- public API wrappers per eBay REST domain
- an isolated Pydantic model generation script for each contract in this folder
Currently wired API domains include Notification, Inventory, Fulfillment, Account, Feed, and Media.
## Media Helpers
The Media wrapper includes workflow helpers on top of the raw endpoints:
- `extract_resource_id()` to pull a media resource ID from a `Location` header
- `wait_for_video()` to poll until a video reaches `LIVE` or a terminal failure state
- `wait_for_document()` to poll until a document reaches `ACCEPTED` or a terminal failure state
## Generate Low-Level Clients
The project uses a dedicated code generation environment because the main runtime is currently on Python 3.14 while the model generator still targets earlier Python versions.
Run the generator script from the project root:
```powershell
& .\.venv\Scripts\python.exe .\scripts\generate_clients.py
```
To generate only one API package:
```powershell
& .\.venv\Scripts\python.exe .\scripts\generate_clients.py --api notification
```
This regenerates Pydantic v2 models into `ebay_client/generated/<api>/models.py`.
## Webhook Helpers
The Notification package also includes framework-agnostic webhook utilities for:
- responding to eBay challenge requests
- parsing and validating the `X-EBAY-SIGNATURE` header
- verifying signed notification payloads against the cached public key
- turning a verified notification body into a normalized `WebhookEventEnvelope`
A concrete FastAPI integration example is available in `examples/fastapi_notification_webhook.py`.