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Auth & rate limits

Authenticate Merkl API requests and understand request quotas

Anonymous requests work, with a default rate limit of 10 requests per second. For production, generate an API key and send it in the X-API-Key header. A key gives you higher quotas, attribution, and support. If you need a higher quota than your key allows, contact the Merkl team.

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

The same key works for the Analytics API and for the endpoints that write data, such as key-value stores and campaign lists.