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Starknet MCP

Model context protocol server for Starknet RPC

Installation

Installing for Claude Desktop

Option 1: One-Command Installation

npx mcpbar@latest install milancermak/starknet-mcp -c claude

This command will automatically install and configure the Starknet MCP MCP server for your selected client.

Option 2: Manual Configuration

Run the command below to open your configuration file:

npx mcpbar@latest edit -c claude

After opening your configuration file, copy and paste this configuration:

View JSON configuration
{
  "mcpServers": {
    "Starknet MCP": {
      "command": "bun",
      "args": [
        "/PATH/TO/THIS/REPO/starknet-mcp/index.ts"
      ],
      "env": {
        "STARKNET_RPC_URL": "https://starknet-mainnet.public.blastapi.io/rpc/v0_7"
      }
    }
  }
}

starknet-mcp

MCP server for Starknet. Makes the following Starknet RPC method available through MCP:

starknet_getBlockWithTxHashes
starknet_getBlockWithTxs
starknet_getBlockWithReceipts
starknet_getStateUpdate
starknet_getStorageAt
starknet_getTransactionStatus
starknet_getTransactionByHash
starknet_getTransactionByBlockIdAndIndex
starknet_getTransactionReceipt
starknet_getClass
starknet_getClassHashAt
starknet_getClassAt
starknet_getBlockTransactionCount
starknet_call
starknet_getEvents
starknet_getNonce
starknet_blockNumber
starknet_blockHashAndNumber
starknet_chainId
starknet_syncing
starknet_specVersion

Write methods are not yet supported.

Starknet Server MCP

Installation

Install Bun. Clone this repo. Install the dependencies with bun install. Update Claude's MCP config - see instructions for your particular OS. You'll want something like this in the claude_desktop_config.json file:

{
  "mcpServers": {
    "starknet": {
      "command": "bun",
      "args": ["/PATH/TO/THIS/REPO/starknet-mcp/index.ts"],
      "env": {
        "STARKNET_RPC_URL": "https://starknet-mainnet.public.blastapi.io/rpc/v0_7"
      }
    }
  }
}

Usage

After correctly configuring Claude Desktop, it will have access to all the available methods. You can start asking Claude questions about the state of the chain, e.g. "What is the latest block hash and number on Starknet?". If Claude determines it has to use an MCP method to answer your question, it will ask you for permissions:

Claude asking for MCP permissions

You'll see the used method, its input and output inline in the chat.

Claude showing output after using starknet-mcp

Quirks

Methods starknet_estimateFee and starknet_estimateMessageFee are not yet supported.

Claude doesn't 100% follow the tool inputSchema. It prefers sending strings over anything else. Some of this is prevented in the code, but if you encounter any error, please open an issue.

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Starknet MCP: MCP Server – MCP.Bar