Check
About
Anti-hallucination firewall for AI coding agents. Validates commands before execution, imports against your package.json, function calls against your source files. Sub-100ms. $0.0068 AUD per check, 120 free on sign-up.
Details
- Author
- golproductions
- Downloads
- 299
- Categories
- Developer Tools, Infrastructure, Other, AI, Security
Jump to
- Validates commands, imports, and function calls prior to execution.
- Returns verdicts in under 100 milliseconds.
- Free tier of 120 checks on signup.
- No AI inside – purely deterministic validation.
- Works with any MCP-compatible client.
- Blocks invalid commands before they reach the shell.
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
CheckCommand (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
Install by adding a configuration entry to your MCP client's mcpServers, specifying the command npx -y @golproductions/check-mcp and setting the environment variable GOL_CLIENT_ID to your API key. After setup, you can invoke the Check tool to validate a command or the CheckAndExecute tool to validate and then run it, blocking invalid commands before they reach the shell.
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"check": {
"Check": {
"command": "npx",
"args": [
"@golproductions/check-mcp"
],
"env": {
"GOL_CLIENT_ID": "your_key"
}
}
}
}
}McpServers
{
"Check": {
"command": "npx",
"args": [
"@golproductions/check-mcp"
],
"env": {
"GOL_CLIENT_ID": "your_key"
}
}
}This is a web browser that enables your coding agent, such as Claude Code, to visit websites on your behalf and assist you in identifying bugs or creating UI test cases.
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