BaseLinker Webhooks

BaseLinker (rebranded Base.com) is a Polish multichannel e-commerce platform — order management, warehouse/inventory, and integrations with marketplaces, stores and couriers.

This is not a normal webhook source. Three things make BaseLinker unlike every other provider in this repo, and all three must be reflected in your handler:

1. The transport is HTTP HEAD, not POST. A HEAD request has no body by definition — reading req.body / await request.json() yields nothing or throws.
2. The entire payload is in the query string. Read it from the parsed query params. Query values are always strings — coerce numerics explicitly.
3. There is no signature verification. None. No HMAC, no signature header, no timestamp/replay check, no shared secret, no handshake or challenge step.