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SVM-MCP

SVM-MCP

Public
rkmonarch/svm-mcp

Model Context Protocol server integrating Claude AI with SOON and SVM-based blockchains to query wallet balances, fetch recent transactions, and view token holdings on SOON testnet and mainnet with Solana-compatible support.

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May 30, 2025
Updated Jun 4, 2025

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SVM-MCP: SOON Model Context Protocol Server

A Model Context Protocol (MCP) server that integrates Claude AI with SOON and other SVM-based blockchains. The server provides tools for checking balances, fetching recent transactions, and viewing token holdings on SOON's testnet and mainnet, for account balances, transactions, and token holdings.

Overview

This MCP server is designed to connect Claude with the SOON ecosystem, allowing it to:

  • Query wallet balances on testnet and mainnet
  • Fetch the most recent transactions for an address
  • Check token holdings for any account

The current implementation uses the SOON's RPC endpoints, but can be easily modified to work with any Solana-compatible blockchain or custom SVM implementation.

Features

  • Get Balances: Fetch native token balances for any address on SOON testnet or mainnet
  • Get Last Transaction: Retrieve the most recent transaction for an address
  • Get Token Accounts: List all token accounts owned by an address

Prerequisites

  • Node.js (v16+)
  • NPM or Bun package manager
  • Claude Desktop (for local testing)

Installation

  1. Clone the repository:
git clone https://github.com/rkmonarch/svm-mcp cd svm-mcp
  1. Install dependencies:
npm install # or bun install
  1. Build the project:
npm run build # or bun run build

Project Structure

The main server implementation is in src/index.ts:

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js"; import { Connection, PublicKey } from "@solana/web3.js"; import { z } from "zod"; const connectionTestnet = new Connection("https://rpc.testnet.soo.network/rpc"); const connectionMainnet = new Connection("https://rpc.mainnet.soo.network/rpc"); const server = new McpServer({ name: "svm-mcp", version: "0.0.1", capabilities: [ "get-soon-testnet-balance", "get-soon-testnet-last-transaction", "get-soon-testnet-account-tokens", "get-soon-mainnet-balance", "get-soon-mainnet-last-transaction", "get-soon-mainnet-account-tokens", ], });

Tool Implementations

Get Balance

server.tool( "get-soon-testnet-balance", "Get the balance of a address on the Soon testnet", { address: z.string().describe("The Solana address to get the balance of"), }, async ({ address }) => { try { const balance = await connectionTestnet.getBalance(new PublicKey(address)); return { content: [ { type: "text", text: `Balance: ${balance}`, }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error getting balance: ${error instanceof Error ? error.message : String(error)}`, }, ], }; } } );

Get Last Transaction

server.tool( "get-soon-testnet-last-transaction", "Get the last transaction of an address on the Soon testnet", { address: z .string() .describe("The Solana address to get the last transaction for"), }, async ({ address }) => { try { // Fetch the most recent transaction signatures for the address const signatures = await connectionTestnet.getSignaturesForAddress( new PublicKey(address), { limit: 1 } // Limit to just the most recent transaction ); if (signatures.length === 0) { return { content: [ { type: "text", text: "No transactions found for this address", }, ], }; } // Get the most recent transaction using its signature const latestSignature = signatures[0].signature; const transaction = await connectionTestnet.getConfirmedTransaction( latestSignature ); return { content: [ { type: "text", text: JSON.stringify(transaction), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error getting transaction: ${error instanceof Error ? error.message : String(error)}`, }, ], }; } } );

Get Token Accounts

server.tool( "get-soon-testnet-account-tokens", "Get the tokens of a address on the Soon testnet", { address: z.string().describe("The Solana address to get the tokens of"), }, async ({ address }) => { try { const tokens = await connectionTestnet.getTokenAccountsByOwner( new PublicKey(address), { programId: new PublicKey("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"), } ); return { content: [ { type: "text", text: JSON.stringify(tokens), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error getting tokens: ${error instanceof Error ? error.message : String(error)}`, }, ], }; } } );

Server Initialization

async function main() { try { console.error("Starting MCP server..."); const transport = new StdioServerTransport(); console.error("Transport initialized, connecting to server..."); await server.connect(transport); console.error("Server connection established successfully"); // The server will keep running in this state } catch (error) { console.error("There was an error connecting to the server:", error); process.exit(1); } } main().catch((err) => { console.error("There was an error starting the server:", err); process.exit(1); });

Configuration

Claude Desktop Configuration

To use this MCP server with Claude Desktop, add the following to your claude_desktop_config.json file:

{ "mcpServers": { "svm-mcp": { "command": "bun", "args": ["/path/to/svm-mcp/build/index.js"] } } }

Customizing RPC Endpoints

To use different RPC endpoints or connect to a different Solana-compatible blockchain, edit the connection URLs in src/index.ts:

const connectionTestnet = new Connection("YOUR_TESTNET_RPC_URL"); const connectionMainnet = new Connection("YOUR_MAINNET_RPC_URL");

Usage with Claude

Once the MCP server is running and connected to Claude, you can use the following commands:

Checking an Address Balance

Can you check the balance of this SOON testnet address: 

Fetching Recent Transactions

What is the last transaction made by  on SOON testnet?

Retrieving Token Holdings

What tokens does  hold on SOON mainnet?

Acknowledgments

  • Anthropic Claude for the AI capabilities
  • Model Context Protocol for enabling tool integration
  • Solana Web3.js for blockchain interaction
  • SOON Network for the SVM implementation used in this example
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