HAL MCP Server

HAL (HTTP API Layer) - An MCP server that provides HTTP API capabilities to Large Language Models with OpenAPI/Swagger integration

Local serverstdioTypeScript

What is the HAL MCP Server?

Hal mcp server lets Claude, Cursor and other MCP clients work with HAL directly. HAL (HTTP API Layer) - An MCP server that provides HTTP API capabilities to Large Language Models with OpenAPI/Swagger integration.

What HAL does

HAL is a Model Context Protocol (MCP) server that provides HTTP API capabilities to Large Language Models. It allows LLMs to make HTTP requests and interact with web APIs through a secure, controlled interface. HAL can also automatically generate tools from OpenAPI/Swagger specifications for seamless API integration.

Key capabilities

  • HTTP GET/POST/PUT/PATCH/DELETE/OPTIONS/HEAD Requests — Fetch and send data to any HTTP endpoint
  • Secure Secret Management — Environment-based secrets with {secrets.key} substitution and automatic redaction
  • Swagger/OpenAPI Integration — Automatically generate tools from API specifications
  • Built-in Documentation — Self-documenting API reference
  • Secure — Runs in isolated environment with controlled access
  • Fast — Built with TypeScript and optimized for performance

Requirements

  • Node.js 18 or later - npm or yarn

Practical notes

  • Maintained by DeanWard, written in TypeScript.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

ToolWhat it does
nameid

How to install the HAL MCP Server

{
  "mcpServers": {
    "hal": {
      "command": "npx",
      "args": ["hal-mcp"]
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Node.js 18 or later - npm or yarn
VariableDescriptionRequired
HAL_SWAGGER_FILEConfiguration value read at startup.Optional
HAL_API_BASE_URLEndpoint or connection string the server talks to.Yes
HAL_SECRET_API_KEYCredential the server authenticates with.Yes
HAL_SECRET_USERNAMECredential the server authenticates with.Yes
HAL_SECRET_PASSWORDCredential the server authenticates with.Yes
HAL_SECRET_TOKENCredential the server authenticates with.Yes
HAL_SECRET_MICROSOFT_API_KEYCredential the server authenticates with.Yes
STORAGE_ACCESS_KEYCredential the server authenticates with.Yes

Example prompts to try

  • “Use HAL to url.”
  • “Use HAL to name.”
  • “Use HAL to Examples.”

Frequently asked questions

HAL (HTTP API Layer) - An MCP server that provides HTTP API capabilities to Large Language Models with OpenAPI/Swagger integration Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.