/phantom-wallet-mcp

name: phantom-wallet-mcp
description: Execute wallet operations through the Phantom MCP server — get addresses, sign transactions, transfer tokens, buy tokens, and sign messages across Solana, Ethereum, Bitcoin, and Sui

Phantom Wallet MCP

Use the `phantom` MCP server to interact with the user's Phantom wallet directly.

Available Tools

| Tool | Description | |------|-------------| | `get_wallet_addresses` | Get blockchain addresses (Solana, Ethereum, Bitcoin, Sui) for the connected wallet | | `sign_transaction` | Sign a transaction (base64url for Solana, RLP hex for Ethereum) | | `transfer_tokens` | Transfer SOL or SPL tokens on Solana — builds, signs, and sends the transaction | | `buy_token` | Fetch Solana swap quotes from Phantom API; optionally sign and send | | `sign_message` | Sign a UTF-8 message with automatic chain-specific routing |

Setup

The `phantom` MCP server requires a `PHANTOM_APP_ID` environment variable from [Phantom Portal](https://phantom.com/portal). On first use, it opens a browser for OAuth authentication via Google or Apple login.

Supported Networks

| Chain | Networks | |-------|----------| | Solana | mainnet, devnet, testnet | | Ethereum | Mainnet, Sepolia, Polygon, Base, Arbitrum | | Bitcoin | Mainnet | | Sui | Mainnet, Testnet |

Networks use CAIP-2 format (e.g., `solana:mainnet`, `eip155:1`).

Examples

Get wallet addresses

Ask the `phantom` MCP to retrieve the user's wallet addresses, then use them for transactions.

Transfer SOL

Use `transfer_tokens` to send SOL to a recipient address. The MCP handles transaction building, signing, and submission.

Sign a message

Use `sign_message` for wallet verification or authentication flows. The MCP routes to the correct chain based on the network parameter.

Important Notes

• Sessions persist locally in `~/.phantom-mcp/session.json`
• This is preview software — use a separate wallet with minimal funds for testing
• The MCP server runs via stdio transport (launched by `npx -y @phantom/mcp-server`)