Free AWS Utility Tools

Fast, focused tools for builders working on AWS. Built by Warren IT.

AWS Cognito JWT Debugger

Decode and validate Cognito JWTs with callouts for the claims that actually matter (token_use, cognito:groups, client_id vs aud).

awscognitojwtauth

AWS Bedrock Prompt Cost Estimator

Estimate per-request and monthly cost for any Bedrock model across regions, including prompt-caching savings.

awsbedrockclaudellm

AWS EventBridge Cron Translator

Translate between Linux cron and EventBridge cron syntax, preview the next five run times, and catch the four differences that always bite you.

awseventbridgecronscheduling

SES Email Deliverability Checker

Check SPF, DKIM, and DMARC DNS records for any domain and get plain-English guidance on what's missing or misconfigured for Amazon SES.

awssesemailspf

Why we built these

When you work on AWS every day, you hit the same friction over and over: debugging a Cognito token someone pasted into a Slack thread, explaining to a client why their Bedrock bill tripled, translating a cron expression from a Linux script into an EventBridge rule. The generic tools on the internet don't understand Cognito's claim quirks, don't model Bedrock's pricing shape, and don't warn you that EventBridge cron numbers its days differently than Linux does. These tools do.

They're free, no account required, and nothing you paste — tokens, prompts, cron expressions — is logged or stored on our side. More tools coming soon.