Auth & rate limits

Authenticate Merkl API requests and understand request quotas

The Merkl API has a default rate limit of 10 requests per second. This limit is sufficient for most integration use cases.

If your application requires a higher rate limit, please contact the Merkl team to request a custom API key. Once provided, you can include your API key in the X-API-Key header for all requests to api.merkl.xyz:

X-API-Key: your-api-key-here

Example request with API key:

curl -H "X-API-Key: your-api-key-here" https://api.merkl.xyz/v4/opportunities