Platform Engineering
Terraform Module Version Checker
Enter a Terraform module source and version constraint to validate syntax and understand what versions will be selected. Explains ~> pessimistic constraint operator semantics.
No data is transmitted — everything runs locallyTool
About this tool
Terraform Module Version Checker
The Terraform Module Version Checker validates module source and version constraint syntax, explaining ~> pessimistic constraint semantics and what version range each constraint matches.
• Verify that ~> 5.0 means >=5.0, <6.0 before writing a module version constraint
• Validate a Git-sourced module version reference before committing
• Check Terraform required_providers version constraint syntax
• Understand the difference between ~> 5.0 and ~> 5.0.0 version constraints
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FAQ
What does this tool tell you?
The Terraform Module Version Checker validates module source and version constraint syntax, explaining ~> pessimistic constraint semantics and what version range each constraint matches.
What affects the result most?
Module source version constraint: source = "terraform-aws-modules/vpc/aws" version = "~> 5.0". Constraint operators: =, !=, >, >=, <, <=, ~> (pessimistic constraint — allows only patch-level changes). ~> 5.0 means >=5.0, <6.0 — common misunderstanding that it means any 5.x version.
How should I use the result?
Treat the tool's output as a first-pass check, not a proof of correctness. A clean pass means no issues in the patterns this tool recognizes; a failure points to a specific problem you can investigate in your source. The underlying spec is the authoritative source for edge cases.
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