# Env Variable Config Validator MCP for AI Agents MCP

> Env Variable Config Validator MCP checks your .env files for structural errors, type mismatches, and security leaks. It prevents application crashes by ensuring every required key is present and that values like ports or database URLs follow the correct format. Use it to clean up your configuration management and stop deploying broken builds.

## Overview
- **Category:** security
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_QnksvL1KEGPhyS17K495FccgSpGE5mIxjOHyJXVQ/mcp
- **Tags:** env, dotenv, validation, security, devops, config

## Description

Configuring environment variables is a high-stakes game where one typo can crash an entire production build. This MCP acts as a specialized auditing engine for your . .env files, catching errors before they ever reach your deployment pipeline. It looks for missing keys that should be there, values that are the wrong type, and duplicate definitions that cause confusion. You can use it to scan for security risks like accidentally exposed secrets or unused variables that just clutter up your configuration. By connecting this to your AI client through Vinkius, you turn your agent into a configuration expert that can audit your setup without you having to manually parse every line of a text file. It's about making sure your application starts reliably and stays secure.

## Tools

### audit_config_health
Scans your .env file to find security risks and identifies any variables that are no longer being used.

### validate_env_structure
Checks if the required keys are present and verifies the overall structural integrity of your configuration files.

### verify_data_integrity
Enforce type constraints to ensure that values like ports or database URLs match the expected format and types.

## Prompt Examples

**Prompt:** 
```
Check if my .env file is missing any required keys: 

PORT=3000
DB_URL=postgres://localhost:5432
```

**Response:** 
```
The structural check is complete. All required keys (PORT, DB_URL) are present in the provided content.
```

**Prompt:** 
```
Are there any security risks or unused variables in this config?

API_KEY=sk_test_4eC39HqLyjWDarjtT1zdp7cu
DEBUG=true
OLD_VAR=something
```

**Response:** 
```
The health audit identified a potential 'secret_exposure' for API_KEY and an 'unused_variable' for OLD_VAR.
```

**Prompt:** 
```
Verify that my PORT variable is a number in this content:

PORT=abc
```

**Response:** 
```
Integrity check failed: The value for 'PORT' is not a valid number.
```

## Capabilities

### Catch configuration errors
Detects missing keys or incorrect formats in your .env files.

### Enforce type constraints
Checks that numeric values are actually numbers and booleans are true/false.

### Audit security risks
Identsifies potential secret exposure or dangerous configuration patterns.

### Clean up unused variables
Removes clutter from your environment configuration files.

## Use Cases

### Broken production builds
A developer is deploying a new feature that requires a new variable. They ask their agent to check the .env file for any missing keys or type mismatches before they push the code.

### security_risk_detection
run an audit of your configuration files to find potential API key exposure or unused variables that clutter up your configs.

### undefined
A backend developer uses this MCP to validate that all new environment variables added to the local development environment match the expected schema and types.

## Benefits

- No more 'undefined' errors caused by decoding or missing keys in your environment configuration.
- Catch security leaks like exposed secrets before they reach your production server.
- Use validate_env_structure to ensure every required key is present for a successful build.
- Clean up technical debt by using audit_config_health to find and remove unused variables.
- Automaticallly enforce type safety across your entire configuration management process.

## How It Works

The bottom line is... you turn your AI client into an automated configuration auditor for your environment files.

1. Connect the Env Variable Config Validator MCP via Vinkius
2. Point your agent to your .env file or configuration content
3. Get a detailed report of structural, type, and security audit results

## Frequently Asked Questions

**How can I check if my .env file is missing any required keys?**
You can use the `validate_env_structure` tool by providing your `.env` content and a list of the keys that must be present.

**Can this tool detect if I accidentally committed an API key?**
Yes, the `audit_config_health` tool performs heuristic pattern matching to identify potential secret exposure in your configuration values.

**How do I verify that my numeric variables are actually numbers?**
Use the `verify_data_integrity` tool with a schema defining the expected types for your keys.