Block Builder Submissions
External builders can submit blocks to the Blocknative Mainnet relay with support for both JSON and SSZ encoding methods, and gzip (gunzip) compression. To improve builder-to-relay latency we recommend using SSZ. The table below outlines Builder API methods available.
Block submissions are currently rate-limited to 10 blocks/second per public key. A single payload has a size limit of 10MB.
To send payloads in JSON or SSZ attach
Content-Typeheader with either
Gunzipped payloads need to have
Content-Encodingheader set to