MCP Servers

metacall-mcp

This MCP server wraps MetaCall FaaS API endpoints as tools, enabling LLMs to list deployments, call functions, and deploy repositories directly via natural language.

README

MetaCall MCP Server

A Model Context Protocol (MCP) server that exposes MetaCall FaaS operations as AI-callable tools, letting LLMs like Claude manage your MetaCall deployments directly.

What this POC does

This server wraps three MetaCall API endpoints as MCP tools:

Tool	Description	Underlying API
`list_deployments`	Lists all active FaaS deployments on your account	`GET /api/deploy/list`
`call_function`	Calls a deployed function by name with arguments	`POST /api/call`
`deploy_from_repo`	Deploys a Git repository to MetaCall FaaS	`POST /api/repository/add`

Prerequisites

Node.js ≥ 18
A MetaCall account with an API token

Setup

npm install

Configuration

Export your MetaCall API token as an environment variable before running:

export METACALL_TOKEN=your_token_here

You can find your token in the MetaCall Dashboard under Settings → API Tokens.

Running

npm run start

On success you'll see on stderr:

MetaCall MCP Server running...

The server communicates over stdio, so Claude Desktop connects to it as a subprocess.

Connecting to Claude Desktop

Add the following to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "metacall": {
      "command": "npm",
      "args": ["run", "start"],
      "cwd": "/path/to/metacall-mcp",
      "env": {
        "METACALL_TOKEN": "your_token_here"
      }
    }
  }
}

Restart Claude Desktop and you'll see the MetaCall tools available in the tools panel.

Tool Reference

`list_deployments`

No parameters. Returns a JSON array of all deployments on your account.

`call_function`

Parameter	Type	Description
`suffix`	string	Deployment path/suffix (e.g. `"my-app"`)
`name`	string	Function name to call
`args`	array	Arguments to pass to the function

`deploy_from_repo`

Parameter	Type	Description
`url`	string	Git repository URL
`plan`	string?	`essential` \| `standard` \| `professional` (default: `essential`)

Building

npm run build
# Output goes to ./dist/

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