io.github.CryptoAPIs-io/mcp-address-latest

MCP server for current balance and state of EVM, UTXO, Solana, XRP, Kaspa addresses via Crypto APIs
Open source Open in the app JSON README (API)
About

MCP server for current balance and state of EVM, UTXO, Solana, XRP, Kaspa addresses via Crypto APIs
Details

Kind: MCP servers
Topic: Finance & crypto
Publisher: cryptoapis-io
Origin: official
Category: ferramentas
Transport: local
Version: 0.3.1
Last push: 2026-07-30T05:49:37Z
Repository state: ativo
Language: TypeScript
Added: 2026-08-29 03:01:48
Updated: 2026-08-29 03:01:48
Origin id: io.github.CryptoAPIs-io/mcp-address-latest
README

# @cryptoapis-io/mcp-address-latest

MCP server for [Crypto APIs](https://cryptoapis.io/) Address Latest product. Query recent blockchain address data (last 14 days) without requiring address sync.

> **API Version:** Compatible with Crypto APIs version **2024-12-12**

## Features

- Query EVM addresses (Ethereum, Ethereum Classic, BSC, Polygon, Avalanche (C-Chain), Arbitrum, Base, Optimism, Tron)
- Query UTXO addresses (Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash)
- Query Solana addresses (SOL balance, transactions, SPL tokens)
- Query XRP/Ripple addresses (balance, transactions, sequence)
- Query Kaspa addresses (balance, transactions)
- Cursor-based pagination for large result sets
- No address sync required (unlike Address History)

## Prerequisites

To use this MCP server, you need:
1. [Register at Crypto APIs](https://app.cryptoapis.io/signup)
2. [Generate an API key](https://app.cryptoapis.io/api-keys) from your dashboard

## Installation

```bash
npm install @cryptoapis-io/mcp-address-latest
```

Or install all Crypto APIs MCP servers: `npm install @cryptoapis-io/mcp`

## Usage

```bash
# Run with API key
npx @cryptoapis-io/mcp-address-latest --api-key YOUR_API_KEY

# Or use environment variable
export CRYPTOAPIS_API_KEY=YOUR_API_KEY
npx @cryptoapis-io/mcp-address-latest
```

### Claude Desktop

Add to your Claude Desktop config (`~/Library/Application Support/Claude/claude_desktop_config.json` on macOS, `%APPDATA%\Claude\claude_desktop_config.json` on Windows):

```json
{
  "mcpServers": {
    "cryptoapis-address-latest": {
      "command": "npx",
      "args": ["-y", "@cryptoapis-io/mcp-address-latest"],
      "env": {
        "CRYPTOAPIS_API_KEY": "your_api_key_here"
      }
    }
  }
}
```

### Cursor

Add to `.cursor/mcp.json` (project) or `~/.cursor/mcp.json` (global):

```json
{
  "mcpServers": {
    "cryptoapis-address-latest": {
      "command": "npx",
      "args": ["-y", "@cryptoapis-io/mcp-address-latest"],
      "env": {
        "CRYPTOAPIS_API_KEY": "your_api_key_here"
      }
    }
  }
}
```

### MCP Inspector

```bash
npx @modelcontextprotocol/inspector npx @cryptoapis-io/mcp-address-latest --api-key YOUR_API_KEY
```

### n8n

1. Start the server in HTTP mode:
   ```bash
   npx @cryptoapis-io/mcp-address-latest --transport http --port 3000 --api-key YOUR_API_KEY
   ```
2. In your n8n workflow, add an **AI Agent** node
3. Under **Tools**, add an **MCP Client Tool** and set the URL to `http://localhost:3000/mcp`

> All servers default to port 3000. Use `--port` to assign different ports when running multiple servers.

## Available Tools

### `evm_address_latest`

Query latest EVM address data.

**Actions:**

| Action | Description |
|--------|-------------|
| `get-balance` | Get address balance |
| `get-next-nonce` | Get next available nonce. Supported: Ethereum (mainnet, sepolia), Ethereum Classic (mainnet, mordor), BSC (mainnet, testnet) |
| `list-transactions` | List address transactions |
| `list-token-transfers` | List token transfers (ERC-20, ERC-721, ERC-1155) |
| `list-internal-transactions` | List internal transactions |

**Supported Blockchains:** ethereum, ethereum-classic, binance-smart-chain, polygon, avalanche (C-Chain), arbitrum, base, optimism, tron

### `utxo_address_latest`

Query latest UTXO address data.

**Actions:**

| Action | Description |
|--------|-------------|
| `get-balance` | Get address balance |
| `list-transactions` | List address transactions |
| `list-unconfirmed-transactions` | List unconfirmed transactions (mempool); uses offset pagination |

**Supported Blockchains:** bitcoin, bitcoin-cash, litecoin, dogecoin, dash, zcash

### `solana_address_latest`

Query latest Solana address data.

**Actions:**

| Action | Description |
|--------|-------------|
| `get-balance` | Get address SOL balance |
| `list-transactions` | List address transactions |
| `list-tokens` | List SPL tokens held by address |

**Supported Networks:** mainnet, devnet

### `xrp_address_latest`

Query latest XRP (Ripple) address data.

**Actions:**

| Action | Description |
|--------|-------------|
| `get-balance` | Get address XRP balance |
| `list-transactions` | List address transactions |
| `get-next-sequence` | Get next available sequence number |

**Supported Networks:** mainnet, testnet

### `kaspa_address_latest`

Query latest Kaspa address data.

**Actions:**

| Action | Description |
|--------|-------------|
| `get-balance` | Get address KAS balance |
| `list-transactions` | List address transactions |

**Supported Networks:** mainnet

## Pagination

Most list endpoints use **cursor-based pagination**:

```json
// Response
{
  "items": [...],
  "limit": 10,
  "hasMore": true,
  "nextStartingAfter": "abc123"
}
```

Use `nextStartingAfter` value as `startingAfter` parameter in the next request.

**Exception:** `list-unconfirmed-transactions` (UTXO) uses **offset pagination** with `limit`, `offset`, and `total` fields.

## Configuration

For **stdio** transport, provide the API key at startup via CLI argument or environment variable. For **HTTP** transport, it can also be provided per-request via `x-api-key` header (see [HTTP API Key Modes](#http-api-key-modes)).

1. **Command-line argument** (recommended):
   ```bash
   npx @cryptoapis-io/mcp-address-latest --api-key {your_api_key}
   ```

2. **Environment variable**:
   ```bash
   export CRYPTOAPIS_API_KEY={your_api_key}
   ```

### CLI Arguments

| Argument | Description |
|----------|-------------|
| `--api-key` | Crypto APIs API key |
| `--transport` | Transport type: `stdio` (default) or `http` |
| `--host` | HTTP host (default: `0.0.0.0`) |
| `--port` | HTTP port (default: `3000`) |
| `--path` | HTTP path (default: `/mcp`) |
| `--stateless` | Enable stateless mode for HTTP |

### HTTP API Key Modes

When using HTTP transport, the server supports two API key modes:

- **With `--api-key`:** The key is used for all requests. `x-api-key` request headers are ignored.
- **Without `--api-key`:** Each request must include an `x-api-key` header with a valid Crypto APIs key. This enables hosting a public server where each user provides their own key.

```bash
# Per-request key mode (multi-tenant)
npx @cryptoapis-io/mcp-address-latest --transport http --port 3000
# Clients send x-api-key header with each request
```

> Stdio transport always requires an API key at startup.

## Important: API Key Required

> **Warning:** Making requests without a valid API key — or with an incorrect one — may result in your IP being banned from the Crypto APIs ecosystem. Always ensure a valid API key is configured before starting any server.

## Remote MCP Server

Crypto APIs provides an official remote MCP server with all tools available via HTTP Streamable transport at [https://ai.cryptoapis.io/mcp](https://ai.cryptoapis.io/mcp). Pass your API key via the `x-api-key` header — no installation required.

## License

MIT