eureka_getBundleSourceInfo

Get metadata about the orderflow source of a bundle — for example, whether it arrived via MEV Blocker, Servo (MEV-share), or directly. Intended for analytics and debugging by bundle submitters.

Parameters

Field	Type	Required	Description
bundleHash	string	Yes	The 0x-prefixed bundle hash
targetBlock	number	Yes	The target block number the bundle was submitted for
accessToken	string	No	Access token required to retrieve private source metadata

Request

{
  "jsonrpc": "2.0",
  "method": "eureka_getBundleSourceInfo",
  "params": [{
    "bundleHash": "0xabcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890",
    "targetBlock": 20000000
  }],
  "id": 1
}

Response

{
  "jsonrpc": "2.0",
  "result": {
    "source": "mev_blocker",
    "signerAddress": "0x4ce7283a71ce72ea10315023a0cc4733f26eee7e",
    "submittedAt": "2024-01-15T12:00:00.100Z"
  },
  "id": 1
}

Response Fields

Field	Type	Description
source	string	Detected orderflow source (e.g. mev_blocker, servo, direct)
signerAddress	string | null	Address of the bundle signer, if available
submittedAt	string	ISO 8601 timestamp of bundle receipt

Errors

Code	Message	Cause
-32001	bundle not found	No record found for the given hash and block
-32003	access token required	Endpoint is configured to require an access token

Notes

• An accessToken may be required depending on the builder's configuration. Contact the Eureka team for access.

• Rate limit: 50 requests per second.