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We’ve introduced UI Logs for Gelato Bundler endpoints!
  • You can now track all your requests directly in the dashboard, and easily debug failed requests using built-in Tenderly simulations.
  • Additionally, you can get info such as response time, request body, response body, and more.

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Debugging Failed Requests Using UI Logs

You can use the UI logs to debug failed requests directly from the Gelato app. These logs are available in the Paymaster & Bundler section of the dashboard. Paymaster & Bundler Logs
This debug feature is currently available only for eth_estimateUserOperationGas endpoint of Gelato Bundler.

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Steps to Debug

  1. Go to the logs section and locate your failed eth_estimateUserOperationGas request.
  2. On the right side of the log entry, click the Debug button.
  3. A new option, View Debug, will appear. Click it.
  4. This will open a Tenderly simulation, which you can use to analyze and debug the failed request.

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Using Status API

In any of the payment methods, when using Gelato Bundler, if you call the eth_sendUserOperation API endpoint, the returned userOpHash can also be used to track the status of the UserOperation through Gelato’s infrastructure like this: 
curl -X GET https://api.gelato.digital/tasks/status/{userOpHash}
Additionally, you can debug the UserOperation using the status API on Tenderly like this: You can make use of the debug endpoint by adding the following parameters:
  • tenderlyUsername
  • tenderlyProjectName
The request URL should look like this: 
curl -X GET https://api.gelato.digital/tasks/status/{userOpHash}/debug?tenderlyUsername={yourUserName}&tenderlyProjectName={yourProjectName}
After running the above command, you can use the link of tenderly simulation in the response to debug the UserOperation.

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Using WebSocket API

Additionally, you can also use the WebSocket API to subscribe to the status updates of the UserOperation like this: You can interact with the websocket API directly by connecting to this endpoint: 
wss://api.gelato.digital/tasks/ws/status
Once connected, you can subscribe to updates using userOpHash of your submitted userOperations by sending messages like this: 
{
    "action": "subscribe",
    "taskId": "0x..." // paste your userOpHash here
}
To unsubscribe from updates: 
{
    "action": "unsubscribe",
    "taskId": "0x..." // paste your userOpHash here
}