Terraform Module Block Generator

Modules are the reusable building blocks of Terraform. Instead of duplicating the same resource definitions across projects, you write a module once and invoke it with a module block, supplying inputs that tailor its behaviour. The Terraform Module Block Generator converts a short form into a correctly structured module block so you never have to memorise the exact HCL syntax, quoting rules, or how to express typed input values.

Provide a module name, a source such as a registry address, a Git URL, an HTTP endpoint, or a local path, an optional version constraint, and a list of module input arguments. Each argument may be a string, number, boolean, or raw HCL expression. The generator validates the module name as a Terraform identifier, coerces each value to the correct HCL type, and emits a paste-ready block for your root configuration. Everything runs locally in your browser, so no source path, version, or input is uploaded and no command executes on your behalf. That keeps private module locations and environment-specific values off any server while still producing accurate, repeatable HCL. Whether you consume a popular public module or a private internal one, this tool removes a frequent source of copy-paste errors and accelerates module adoption.

• Any source - registry addresses, Git URLs, HTTP endpoints, and local relative paths are all supported as module sources.
• Version constraint - add an optional version pin using operators such as ~>, >=, or a fixed version.
• Typed arguments - supply string, number, bool, or raw HCL expression values for every module input.
• Identifier validation - the module name is checked against Terraform naming rules before generation.
• Quote safety - string values are quoted automatically so the resulting HCL always parses.
• Boolean coercion - true and false are emitted as native booleans rather than quoted strings.
• Number coercion - numeric inputs are emitted without quotes for correct typing.
• Raw passthrough - advanced values such as lists pass through untouched as raw HCL.
• Error panel - clear messages explain exactly what to fix before generating, so you learn the rule instead of guessing.
• Argument count badge - a live stat shows how many module inputs you have wired as you build the block.
• Sample loader - one click fills a realistic example so you can see the expected shape instantly.
• Copy, download, print - export the finished main.tf wherever you need it, in the format your workflow expects.

1. Name the module using a valid Terraform identifier such as vpc or app_cache.
2. Enter the source, for example terraform-aws-modules/vpc/aws or ./modules/vpc.
3. Add a version constraint like ~> 5.0 to pin the exact module release you trust.
4. Add module arguments one per row, choosing a name and a value type for each input.
5. Click Generate HCL to render the module block from your inputs.
6. Review the preview and resolve any errors shown in the danger panel.
7. Copy, download, or print the HCL so you can keep it in your repository.
8. Paste the block into your configuration and run terraform init to fetch the module.

Example 1 - a public registry VPC module. Name vpc, source terraform-aws-modules/vpc/aws, version ~> 5.0, and arguments cidr = 10.0.0.0/16 with enable_dns = true. The tool emits a module block that fetches the official VPC module with your own network settings applied, pinning the exact release you trust.

Example 2 - a private local module. Name cache, source ./modules/redis, and argument node_count = 3. The output is a module block pointing at a local path, which is handy while iterating inside a monorepo before you publish the module to a registry.

Example 3 - a Git source with metadata. Name policy, source git::https://example.com/org/policy.git?ref=v1.2.0, and argument region = eu-west-1. This shows how a versioned Git URL becomes a module block you can review and commit without leaving the browser.

• Correct schema - a valid module block every time, with no HCL syntax mistakes or missing quotes to trip up terraform init.
• Flexible - any source type and any combination of typed module inputs is supported, from a single string to a complex expression.
• Validated - identifier and value errors are caught before you ever generate output, saving a slow plan and apply cycle.
• Private - the whole flow runs in your browser; nothing leaves your machine and no credentials are ever read.
• Fast - generate, copy, and apply a module in a few seconds instead of hand-writing and re-checking it.
• Consistent - repeated module calls share the same clean, predictable structure across every project in your organisation.