Bundler APIBundler API Endpoints

eth_getUserOperationByHash

Return a UserOperation based on a userOpHash.

Supported EntryPoints

eth_getUserOperationByHash supports both v0.6 and v0.7 userOps. The format of the returned userOp depends on the version found with the requested hash. Check our FAQs to determine which version you should use.

Limitations

The eth_getUserOperationByHash method retrieves and decodes user operations from the logs of mined transactions by querying the node. If you attempt to fetch a receipt for a transaction from a distant past block, the request may be rejected by the node due to limitations on the block range size it can process.

The default range we support is 150 blocks, however the following networks have an unlimited range.

  • Ethereum
  • Polygon
  • Base
  • Optimism
  • Worldchain
  • Arbitrum

Path parameters

apiKeystringRequired

Request

This endpoint expects an object.
userOpHashstringRequiredformat: "^0x[0-9a-f]{64}$"

The userOpHash of the UserOperation to retrieve.

Response

The UserOperation object.

entrypointV06Responseobject
entrypointV07Responseobject