Inspector AWS CFN

A free online tool for developers and operators to inspect AWS CloudFormation templates, detect issues, and improve reliability, security, and compliance.

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About This Tool

The Inspector AWS CFN tool analyzes CloudFormation templates to surface structural, security, and operational risks before deployment. It parses JSON/YAML, validates resource types, and resolves intrinsic functions and parameter references to produce a structured report. Conceptually, it treats the template as a declarative specification of desired infrastructure, then checks for misconfigurations, overly permissive settings, and unclear dependencies. Benefits include reduced blast radius from misconfigurations, accelerated governance reviews, and clearer remediation guidance for engineering and security teams. Core features produce an issue list with severities, a composite risk score, a dependency graph, and actionable remediation steps. It supports quick lint runs for CI, as well as deeper, in-depth analysis for audits. Unique value lies in its combination of static analysis, dependency visualization, and policy-aligned guidance all in a read-only format, enabling teams to fix weaknesses without touching live environments. Typical use cases include pre-commit checks in CI, security reviews before production deployments, and IaC governance programs. The tool is agnostic to specific AWS accounts, focusing on template quality and compliance signals that translate into faster, safer releases. Users gain improved confidence in templates, consistent adherence to internal standards, and clearer traceability for audits. Core features also cover parameter validation, detection of missing inputs, and warning on potential drift indicators. Use cases span startups building infrastructure as code, consulting firms validating client templates, and enterprises enforcing deployment guardrails.

How to Use

  1. Provide inputs: supply the CloudFormation template (body or URL), region, and any parameter overrides.
  2. Configure scope: choose lite lint or deep risk analysis and optional drift checks.
  3. Run inspection: execute analysis to parse, validate, and assess risks.
  4. Review outputs: examine issues, remediation guidance, and the dependency graph.
  5. Export or save: export the report as JSON or PDF for audits and pipelines.
How to use inspector aws cfn

Frequently Asked Questions

Find Quick Answers

What inputs does the tool accept?
It accepts CloudFormation template bodies in JSON or YAML, an optional template URL, a target AWS region, and a map of parameter values. You can enable minimal lint or deep analysis to tailor results.
The output includes a structured report with overall risk, a list of issues with locations, remediation guidance, a dependency graph, and a compatibility status. It is designed for governance and remediation planning.
What does the output include?
Can it detect security misconfigurations?
Yes. It checks for common security risks such as overly permissive IAM policies, exposed parameters, and insecure resource configurations, and marks them with severity levels to prioritize fixes.
Is the inspection executable against live stacks?
No. The tool performs static analysis on templates only and does not deploy or modify any resources. It provides guidance to improve template quality and compliance prior to deployment.

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