To authenticate, use a "REPLIERS-API-KEY" header and set the value to {API-KEY} with each request.

Here's an example CURL request that demonstrates Repliers API authentication using the REPLIERS-API-KEY header:

curl --request GET \
  --url https://api.repliers.io/listings \
  --header 'REPLIERS-API-KEY: {API-KEY}' \
  --header 'content-type: application/json'

Your API-KEY is provided when your developer account is created.