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HAL

MCP.Pizza Chef: DeanWard

HAL lets your AI assistant interact with web services by sending and receiving data through HTTP requests. It works inside apps like Claude Desktop and ensures your API keys and passwords stay secret by substituting and hiding them automatically. You can also load API descriptions to let your AI use those services easily. Setup involves adding a small config snippet and environment variables — no coding needed.

Other
Web/Research

Use This MCP server To

Make my AI fetch data from any web API Let my AI send data securely to online services Automatically use my API keys without exposing them Generate AI tools from API descriptions Control which URLs my AI can access Keep my API credentials hidden from AI responses Use HAL easily within Claude Desktop

README

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HAL (HTTP API Layer)

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.

Documentation

Complete Documentation →

Visit our comprehensive documentation site for detailed guides, examples, and API reference.

Features

  • 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

Usage

HAL is designed to work with MCP-compatible clients. Here are some examples:

Basic Usage (Claude Desktop)

Add HAL to your Claude Desktop configuration (npx will automatically install and run HAL):

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

With Swagger/OpenAPI Integration and Secrets

HAL FAQ

Can I use HAL to let my AI access web APIs securely?
Yes — HAL lets your AI make safe HTTP requests to web APIs while keeping your secrets hidden.
Can I use HAL with Claude Desktop?
Yes — HAL is designed to work smoothly with Claude Desktop and other MCP-compatible clients.
Do I need an API key or account to use HAL?
You need accounts or keys for the APIs you want to access, but HAL itself does not require a separate account.
How hard is it to set up HAL?
Setup is copy-paste-config — you add a small snippet to your client config and set environment variables.
Does HAL support automatic handling of API keys?
Yes — you store keys as environment secrets and HAL substitutes them securely in requests.
Can HAL generate tools from API specs?
Yes — it can auto-create tools from OpenAPI/Swagger files for easy API integration.
Is my secret information safe when using HAL?
Yes — HAL automatically redacts secrets from all responses to keep them private.