# Supabase Edge Function Deno Validator MCP for AI Agents AI Agent Connect

> Supabase Edge Function Deno Validator MCP prevents deployment failures by catching Node.js-specific code patterns before they hit production. It scans your TypeScript files for incompatible modules and incorrect environment variable access, ensuring your functions are fully compatible with the Deno runtime used by Supabase.

## Overview
- **Category:** devops
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_PjOokrZoclgPbUiuwwGN5GRDHzYa6NvuPBWnToAu/ai-agent-connect
- **Tags:** supabase, deno, edge-functions, validation, typescript, deployment

## Description

Deploying to Supabase Edge Functions can be a headache if you are coming from a Node.js background. You write code that works perfectly on your local machine, only to have the deployment fail because of a single incompatible import or an attempt to use process.env. This MCP acts as a pre-deployment check for your agent. Instead of waiting for a failed build log, you can ask your AI client to scan your functions for Deno compatibility. It looks for risky patterns and suggests the right Deno alternatives. By connecting this to your workflow through Vinkius, you turn your coding agent into a specialized DevOps auditor that catches runtime errors before they ever reach your Supabase project.

## Tools

### audit_node_imports
Scans your TypeScript code for Node.js modules that are not supported in Deno. This helps you identify risky imports like node:path early.

### check_env_access
Detects if you are using process.env instead of the required Deno.env syntax. It prevents runtime crashes caused by incorrect environment variable access.

### validate_deno_imports
Checks your entire script to ensure it follows Deno-compatible import rules. This validates that your code is ready for the Supabase runtime.

## Prompt Examples

**Prompt:** 
```
Is this snippet safe for Supabase Edge Functions? import fs from "node:fs";
```

**Response:** 
```
No, that will fail. The `node:fs` module is a Node.js built-in and isn't available in the Deno runtime used by Supabase. You should use web standard APIs instead.
```

**Prompt:** 
```
Check my environment variable usage in this function. console.log(process.env.API_KEY);
```

**Response:** 
```
This is incorrect for Supabase Edge Functions. You should use `Deno.env.get("API_KEY")` instead of `process.env`. Using the Node-style syntax will cause a runtime error.
```

**Prompt:** 
```
Can you audit my imports for Deno compatibility?
```

**Response:** 
```
I can certainly help with that. Please provide the code or file path. I will check for:

* Node.js specific modules (like `node:path`)
* Incompatible environment variable access
* Any other patterns that do not align with Deno standards.
```

## Capabilities

### Catch Node.js module errors
Finds imports that will not work in the Deno runtime.

### Audit environment variable usage
Ensures you use Deno.env instead of the Node-style process.env syntax.

### Verify TypeScript compatibility
Checks if your code follows Deno-specific standards and rules.

### Prevent deployment failures
Stops broken code from reaching your Supabase production environment.

## Use Cases

### Migrating Node.js logic to Deno
You have an existing Node.js utility and want to move it to Supabase. Ask your agent to check the code for any incompatible imports or patterns.

### Pre-deployment verification
Before running a deployment command, ask your agent to run a full audit on your new function files to catch hidden errors.

### Auditing environment variable usage
You are unsure if your team is using the correct syntax for secrets. Use the MCP to scan all functions for any instances of process.env.

## Benefits

- Eliminate deployment guesswork by catching incompatible modules early.
- Avoid runtime crashes caused by incorrect environment variable access.
- Ensure your TypeScript code is ready for the Deno runtime.
- Reduce time spent debugging failed Supabase Edge Function builds.
- Automate the audit of your edge functions directly within your AI client.

## How It Works

The bottom line is you stop guessing if your code will run and start knowing it will.

1. Connect the MCP to your preferred AI client via Vinkius.
2. Point your agent toward your TypeScript files or function snippets.
3. Receive a clear report of any Deno-incompatible patterns found in your code.

## Frequently Asked Questions

**How can the Supabase Edge Function Deno Validator prevent deployment errors?**
It identifies Node.js-specific code, like node:path imports or process.env usage, before you deploy. This stops your functions from failing at runtime in the Deno environment.

**Can I use this MCP with Claude for my Supabase projects?**
Yes. You can connect this MCP to any compatible client like Claude or Cursor. Once connected, your agent can scan your TypeScript files for compatibility issues directly.

**Does the Supabase Edge Function Deno Validator check for TypeScript errors?**
It focuses specifically on Deno runtime compatibility, such as checking for incompatible imports and environment variable access patterns that would cause a failure in Supabase.

**What happens if I use Node.js modules in my edge functions?**
Your deployment will likely fail or the function will crash at runtime. This MCP helps you catch those node: prefixed imports early so you can replace them with Deno-compatible versions.

**Is this tool useful for migrating existing Node.js code to Supabase?**
Yes, it is specifically designed to find the parts of your Node.js code that will break in a Deno environment, making migration much smoother.

**What does this MCP server do?**
It scans your TypeScript code for Node.js-specific patterns that will fail in the Deno runtime used by Supabase Edge Functions.

**How can I check for Node.js imports?**
You can use the `audit_node_imports` tool to identify modules like 'node:fs' or 'node:path' that are not compatible with Deno.

**Does it check environment variables?**
Yes, the `check_env_access` tool analyzes your code to ensure you are using Deno.env instead of the Node-specific process.env.