Ankr Advanced API MCP Server ⚡

This is a Model Context Protocol (MCP) server that provides tools for interacting with Ankr's Advanced APIs. It enables AI models to fetch blockchain data and perform various operations.

Tools

• getAccountBalance: Fetch token balances across multiple blockchains for any address or ENS name
  • Arguments:
    • address: Ethereum address (0x...) or ENS name (*.eth)
    • blockchains (optional): Array of specific blockchains to query. If not provided, checks all supported chains
• getTokenPrice: Get current price for any token (native or ERC20) on supported blockchains
  • Arguments:
    • blockchain: The blockchain network (eth, bsc, polygon, etc.)
    • contractAddress (optional): The token's contract address. Leave empty for native coin

Supported Blockchains

• Mainnets: Ethereum, BSC, Polygon, Arbitrum, Avalanche, Base, Fantom, Gnosis, Linea, Optimism, and more
• Testnets: Ethereum Sepolia, Ethereum Holesky, Base Sepolia, Avalanche Fuji, and others

Setup

Prerequisites

1. Ankr API Key
   • Create a free account at ankr.com/rpc

Configuring Cursor 🖥️

1. Open Cursor Settings
2. Navigate to Features > MCP Servers
3. Click on the "+ Add New MCP Server" button
4. Fill out the following information:
   • Name: Enter a nickname for the server (e.g., "Ankr AAPI MCP")
   • Type: Select "command" as the type
   • Command: env ANKR_API_KEY=<YOUR_KEY> npx -y @asphere/aapi-mcp-server

Use with Claude Desktop

{
  "mcpServers": {
    "aapi": {
      "command": "npx",
      "args": ["-y", "@asphere/aapi-mcp-server"],
      "env": {
        "ANKR_API_KEY": "<YOUR_KEY>"
      }
    }
  }
}

Local development

Install dependencies

pnpm i

Run local SSE server

export ANKR_API_KEY="YOUR-ANKR-KEY"
pnpm dev:sse

Remote server

In the remote mode service creates an isolated MCP Server instance for each connection, enabling secure and isolated access over the internet. Each connection requires an apiKey in the URL path for authentication with Ankr Advanced API.

Asphere Managed AAPI MCP Remote server

The managed version is available on https://aapi-mcp-server.asphere.network/

https://aapi-mcp-server.asphere.network/{ANKR-API-KEY}/sse

Local Development

# Start the remote server
pnpm dev:remote

# Connect using localhost
http://localhost:3001/{apiKey}/sse

Deployment

When deployed, MCP clients can connect using:

type: sse
url: https://your-remote-url.com/{apiKey}/sse