Registry + Hooks
AWS CloudFormation Pricing Calculator
Model third-party registry and custom Hooks handler operations — AWS::* resources stay free of CFN fees.
- No signup
- Instant results
- ~2 min
Rates reviewed
Handler operations
us-east-1list rates, pricing as of 2026-10-17. AWS::* / Alexa::* providers free. Third-party + custom Hooks: $0.0009/op after 1,000 free; duration over 30s/op at $0.00008/s. Source: AWS public pricing.
CREATE/UPDATE/DELETE/READ/LIST on non-AWS::* types.
Custom hook invocations on stack operations.
Duration overage
Seconds beyond the free 30s per operation.
Your Estimated CloudFormation Cost
Registry · hooks
Total Monthly Cost
live resultCost Breakdown
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Talk to FinOps Experts →Who This Tool Is For
Platform teams using CloudFormation registry extensions or custom Hooks.
Why We Built This Tool
Native AWS::* stacks are free of CFN fees; third-party handlers and custom hooks are metered.
What Problem It Solves
- Daily ops. 500 resources × daily ops ≈ 15K handlers/mo.
- Hook fan-out. Many hooks × stack ops multiplies invocations.
- Slow handlers. Duration past 30s/op adds overage.
Frequently Asked Questions
Do AWS::* resources cost CFN fees?
No — you only pay for the underlying AWS resources.
What is the free tier?
1,000 combined third-party + custom hook handler operations per month.
Hooks in AWS::* namespace?
Managed AWS hooks are not charged; custom hooks you author are.
