Terraform Validator

Paste your Terraform (HCL) and get an instant structural check — unbalanced braces, unterminated strings, duplicate resource addresses, and common style lints, each with a line number. It runs entirely in your browser and never executes Terraform or touches your state.

Terraform (HCL) input

Results

Results appear here as you type.

100% private — validation runs entirely in your browser. Your input is never uploaded.

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
}

provider "aws" {
  region = "us-east-1"
}

resource "aws_s3_bucket" "logs" {
  bucket = "${var.bucket_name}"
}

variable "bucket_name" {
  type = string
}

What it checks

• Unbalanced braces {/}, pinpointed to the offending line.
• Unterminated strings (a missing closing quote).
• Duplicate resource / data addresses that Terraform would reject.
• Unnecessary "${...}" wrappers (Terraform 0.12+ takes the expression directly).
• Unpinned providers when there is no required_providers block.

A lightweight static check — for full validation also run terraform fmt and terraform validate in your pipeline.

Keep going

• YAML validator — syntax + Kubernetes linting.
• Terraform troubleshooting guides on the blog.
• AI Incident Response Assistant for live issues.