event_id — Event ID

Location: payload · Vendor: AWS Cognito

Correlates the token with the specific Cognito authentication event (sign-in, refresh, etc.) that produced it, useful for audit-log correlation and for investigating suspicious sign-in activity in CloudTrail/Cognito logs.

Defined in Amazon Cognito user pool tokens.

Decode a JWT and inspect its event_id claim in the TokenPrism debugger — free, entirely in your browser.