Environment Variable Template Generator for Dev Setup

WHAT IT DOES

Environment Variable Template Generator for Dev Setup helps you create standardized environment variable templates for your smart contract projects. You provide a list of environment variables with their names, default values, descriptions, and whether they are required. The tool generates two files: .env.example (with comments and placeholder values for developers to copy) and .env.template (with placeholder markers for automated setup tools). Each variable is documented with its description and required/optional status, making it easy for team members to understand what configuration is needed. This is essential for open-source projects, team collaboration, CI/CD pipelines, and any project that needs clear documentation of its configuration requirements. The generated templates follow best practices for environment variable management and can be committed to version control.

HOW TO USE

Enter your project name. Define environment variables—one per line—in the format "NAME | default | description | required". For example: "RPC_URL | http://localhost:8545 | Chain RPC endpoint | yes" or "DEPLOYER_PRIVATE_KEY | | Private key for deployment | no". The required field can be "yes" or "no". Optionally add a header comment. Choose whether to include .env.example, .env.template, or both. Click "Generate Environment Templates." The tool builds both files with proper formatting, displays a summary of all variables with their attributes, and provides previews of each generated file. Use the copy buttons to copy each file to your clipboard, then save them to your project root.

THE REAL MECHANISM

The tool uses a pure JavaScript template engine that operates entirely client-side. It parses each line of user input, splitting on the pipe character to extract the variable name, default value, description, and required flag. Each variable name is validated to ensure it matches the standard pattern for environment variables (uppercase letters, numbers, and underscores). The tool then generates two formatted files: .env.example uses a simple "NAME=value" format with comments on preceding lines, while .env.template replaces empty values with "YOUR_VALUE_HERE" placeholders. The required flag is rendered as a tag in the variable list and as a comment in the generated files. All processing is done in the browser—no data is sent to external servers.

WHAT IT CANNOT SEE

This tool cannot generate environment-specific configuration automatically—it only creates templates. It cannot detect if the generated template matches the actual application requirements or if any variables are missing. It cannot validate that the variable names are correct for your specific application. It cannot generate templates for non-EVM applications. It cannot automatically update templates when variables change—you must regenerate them manually. It cannot generate secrets, private keys, or any sensitive values—it only creates placeholders. The tool does not read your existing .env files or detect which variables are actually used in your code.

PLEASE NOTE

Environment Variable Template Generator works for any EVM contract project and does not require a blockchain connection to function, though the network selector is provided for context. It is a documentation and configuration tool for developers, not an execution tool. It reads data only and does not send any information to external servers. The tool is free to use and does not require authentication. For best results, carefully document each variable with a clear description and mark required fields appropriately.