optional_env_var

MCP tool from Hooks MCP by scosman

Similar to requiredenvvar but optional. The server will not error on startup if this is missing.

How to use it

Project documentation lists optional_env_var for the Hooks MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

Install Hooks MCP

$uvx hooks-mcp

FULL HOOKS MCP LISTING

Other tools in Hooks MCP (3)

insecure_string

Allows any string input from the agent without validation. Use with caution:

project_file_path

This parameter type ensures security by validating that the path parameter is within the project boundaries:

required_env_var

This is a tool parameter expected to exist as an environment variable. The server will fail to start if the environment is missing this var.