AWS CloudTrail Log Analyzer

Summarize pasted log JSON by event, error and user.

Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.

Log JSON

How to use this tool

Enter your values in the fields above.
Press Generate to see the result.
Use Load sample to try the worked example, Copy result to copy it, or Clear to start again.

The sample has 4 records, 1 with an error, most frequent event RunInstances with 2, and users alice (2) and bob (2).

This summarizes only the JSON you paste. It does not connect to any cloud account or live log source.

What JSON shape is expected?

An object with a Records array, or a plain array of records.

What counts as an error?

Any record carrying an errorCode field.

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