SEI MCP Server V2

SEI MCP Server V2

Enables AI agents to interact with the Sei blockchain ecosystem through natural language, providing DeFi trading, NFT marketplace access, cross-chain bridging, token deployment, and comprehensive on-chain data analytics.

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README

SEI MCP Server V2: The Autonomous Agent Toolkit for Sei 🚀

License: MIT EVM Networks TypeScript Viem

Sei Model Context Protocol (Sei MCP) server provides blockchain services for the Sei blockchain. This server enables AI assistants and agents to interact via unified interface.


🎥 Sei MCP V2 Demo Video

Watch the demo video to see Sei MCP V2 in action.


📦 Sei MCP V2 Package on npm

You can install the Sei MCP V2 package via npm:

npm install @sei-mcp-v2/sei-mcp-server

📋 Contents


🔭 Overview

Our vision is to provide the foundational infrastructure that empowers AI to act as autonomous agents, simplifying complex on-chain actions—from DeFi trading to cross-chain bridging—into easy, natural language conversations.

To bring this vision to life, we've built SEI MCP V2, a massively expanded, multi-protocol infrastructure suite designed as the ultimate toolkit for AI agents on the Sei Network. This server transforms the core MCP concept into an all-in-one gateway to the Web3 ecosystem, accessible through a unified interface.

💪 Core Capabilities

  • 🐝 Hive Natural Language Querying

    • A revolutionary tool allowing AI agents to query complex on-chain data with simple English prompts.
    • Example query: “What are the holdings in my wallet 0x...?”
  • 💹 Advanced DeFi & NFT Trading SEI MCP V2 offers a complete suite for decentralized finance and NFT trading:

    • Citrex Perpetual Futures Exchange:

      • Place advanced orders (market, limit)
      • Manage orders in batches
      • Monitor account health and margin
      • Access real-time market data (order books, klines)
    • DragonSwap V3 DEX:

      • Execute atomic token swaps
      • Manage concentrated liquidity positions
      • Create new liquidity pools
    • OpenSea NFT Marketplace:

      • Discover collections and NFTs
      • Analyze stats
      • Create and fulfill listings and offers
      • Track event history and buy NFTs with a single command
    • Yei Finance Lending Protocol:

      • Supply assets to earn interest
      • Borrow against collateral
      • Utilize advanced features like flash loans and credit delegation
  • 🌉 DEX & Bridge Aggregation Robust cross-chain capabilities through leading protocols:

    • Symphony & Kame DEX Aggregators:

      • Find optimal swap routes
      • Execute trades with advanced options
      • Discover supported tokens
      • Generate transaction calldata for offline use
    • Li.Fi & deBridge Cross-Chain Bridging:

      • Seamlessly bridge assets across different blockchains
      • Get quotes from multiple bridge providers
      • Track order status and manage the cross-chain transaction lifecycle
  • 🪙 Complete Token Lifecycle Management Tools to manage on-chain assets:

    • Create new ERC20 and ERC721 (NFT) tokens from scratch
    • Deploy, verify, and mint tokens on Sei and on SeiTrace
  • 📊 Rich Data & Analytics Comprehensive data integrations for a holistic view of the ecosystem:

    • SeiTrace: Deep on-chain analysis (wallets, transactions, token holders, etc.)
    • CoinGecko & DexScreener: Real-time market data, historical prices, live DEX analytics

SEI MCP V2 is built to be compatible with existing AI assistants like Claude or Cursor, enabling users and developers to interact with the entire Sei ecosystem through simple, conversational interfaces. This empowers the development of sophisticated, autonomous AI agents, capable of executing complex multi-step tasks effortlessly.


✨ Features

<details> <summary>Blockchain Data Access</summary>

🔗 Blockchain Data Access

  • 🌐 Chain information including blockNumber, chainId, and RPCs
  • 📦 Block data access by number, hash, or latest
  • 🔍 Transaction details and receipts with decoded logs
  • 💰 Address balances for native tokens and all token standards
    </details>

<details> <summary>Token Services</summary>

🪙 Token Services

  • Native SEI & Wrapped SEI (WSEI)

    • 💸 Transfer native SEI tokens
    • 🔄 Wrap SEI into WSEI and unwrap WSEI back to SEI
  • 🏦 ERC20 Tokens

    • 🏷️ Get token metadata (name, symbol, decimals, supply)
    • 💳 Check token balances
    • 🔁 Transfer tokens between addresses
    • ✅ Approve spending allowances
  • 🎨 NFTs (ERC721)

    • 🖼️ Get collection and token metadata, including token URIs
    • 🔑 Verify token ownership
    • 📤 Transfer NFTs between addresses
    • 📊 Count token holdings for a collection
  • 🎲 Multi-tokens (ERC1155)

    • 📦 Get token balances and metadata URIs
    • 📤 Transfer tokens with specified quantities
      </details>

<details> <summary>Smart Contract Interactions</summary>

🤖 Smart Contract Interactions

  • 📖 Read contract state with view/pure functions
  • ✍️ Write services with private key signing for state changes
  • 🛡️ Contract verification to distinguish smart contracts from EOAs
  • 📜 Event logs retrieval and filtering </details>

<details> <summary>ERC20 Token Deployment</summary>

🪙 ERC20 Token Deployment

  • 🏗️ Token Creation: Deploy a new ERC20 token with a custom name, symbol, and initial supply
  • Contract Verification: Verify deployed contracts both locally by checking parameters and publicly on the SeiTrace block explorer
  • Supply Management: Mint additional tokens to any address after deployment
    </details>

<details> <summary>ERC721 (NFT) Deployment</summary>

🖼️ ERC721 (NFT) Deployment

  • 🏗️ NFT Collection Creation: Deploy a new ERC721 contract with a custom name, symbol, and metadata URI
  • Contract Verification: Verify deployed NFT contracts both locally (by checking parameters) and publicly on a block explorer
  • 🎨 NFT Minting: Mint single or multiple NFTs from a deployed collection
    </details>

<details> <summary>SeiTrace Insights</summary>

🔍 SeiTrace Insights

  • 🧾 Deep Address Analysis: Get detailed profiles, transaction histories, and comprehensive token balances (Native, ERC20, ERC721, ERC1155) for any address
  • 🪙 Comprehensive Token Data: Look up token information, discover all holders, and track transfer histories for any token standard on Sei
  • 🎨 NFT Inspection: Retrieve details and ownership information for individual NFT instances within a collection
    </details>

<details> <summary>DragonSwap V3 DEX Integration</summary>

🐉 DragonSwap V3 DEX Integration

  • 🔄 Token Swaps: Execute single-hop, multi-hop, and find the optimal swap route for the best price
  • 💱 Price & Quote Fetching: Get real-time swap quotes and token prices from liquidity pools
  • 💧 Liquidity Provision: Add and remove liquidity from pools, and collect accrued trading fees
  • 🏦 Pool Management: Get comprehensive pool information, find existing pool addresses, and create new pools
  • 📊 Data & Analytics: Access historical pool data (swaps, mints, burns) and calculate impermanent loss
  • 🧮 Advanced Utilities: Calculate tick ranges, slippage, and batch multiple operations into a single transaction </details>

<details> <summary>Yei Finance Lending Protocol Integration</summary>

🏦 Yei Finance Lending Protocol Integration

  • 💸 Lending & Borrowing: Supply assets like SEI and stablecoins to earn interest, and borrow other assets against your deposited collateral
  • 📊 Comprehensive Position Management: Track user account health, total collateral, and current debt to manage risk effectively
  • 🛡️ Collateral & E-Mode Control: Dynamically toggle which supplied assets are used as collateral and enter High-Efficiency Modes (E-Mode) for better borrowing power on correlated assets
  • Advanced DeFi Primitives: Execute multi-asset flash loans for complex atomic operations and delegate borrowing power to other users </details>

<details> <summary>Symphony DEX Aggregator Integration</summary>

🎶 Symphony DEX Aggregator Integration

  • 🛣️ Optimal Trade Routing: Finds the most efficient paths and prices for token swaps across multiple liquidity sources to ensure the best rates
  • Flexible Swap Execution: Perform simple one-click swaps or use advanced options to control slippage, routing, and other trade parameters
  • 🪙 Token & Approval Management: Discover all supported tokens, check spender allowances before trading, and grant token approvals
  • 🛠️ SDK Configuration: Dynamically configure the Symphony SDK's core parameters for custom use cases
  • 🔒 Offline Transaction Building: Generate raw transaction calldata for a swap, allowing for integration with multi-sig wallets or other offline signing systems
    </details>

<details> <summary>deBridge Cross-Chain Bridging Integration</summary>

🌉 deBridge Cross-Chain Bridging Integration

  • 🔄 Cross-Chain Asset Transfers: Seamlessly bridge tokens between different blockchain networks like BSC, Ethereum, and Sei
  • 💱 Order Creation & Estimation: Get accurate quotes for cross-chain swaps and generate signable transactions for execution
  • 📡 Comprehensive Order Tracking: Monitor the real-time status of bridging orders by their unique ID or creation transaction hash
  • 🗂️ Full Order History: Retrieve a complete history of a user's past bridging transactions with advanced filtering by chain or order status
  • Order Management: Cancel pending orders that have not yet been fulfilled by the network
    </details>

<details> <summary>Li.Fi Bridge & DEX Aggregation Integration</summary>

🔗 Li.Fi Bridge & DEX Aggregation Integration

  • 💱 Aggregated Cross-Chain Swaps: Get quotes and execute swaps across a wide range of bridges and DEXs for optimal pricing and routes
  • 🛣️ Flexible Routing: Choose between a single recommended quote or explore all possible routes for a cross-chain transaction
  • Simplified Execution: Perform complex multi-chain swaps with a single, high-level tool
  • 🌐 Protocol Discovery: Explore all supported EVM chains and look up specific token details within the Li.Fi ecosystem
    </details>

<details> <summary>OpenSea NFT Marketplace Integration</summary>

⛵ OpenSea NFT Marketplace Integration

  • 🔎 Comprehensive NFT Discovery: Browse collections on Sei, get detailed metadata for specific NFTs, and view the holdings of any account
  • 📊 Advanced Collection Analytics: Fetch real-time collection statistics, including floor price, volume, and owner counts
  • 🛒 Full Trading Lifecycle: Create and fulfill listings and offers for individual NFTs, or make collection-wide offers
  • High-Level Trading Functions: Easily buy an NFT at its best price with a single command
  • 📜 Activity & Event Tracking: Monitor all marketplace activity for accounts, collections, or specific NFTs
  • Order Management: Cancel active listings or offers on-chain
    </details>

<details> <summary>Citrex Perpetual Futures Exchange Integration</summary>

📈 Citrex Perpetual Futures Exchange Integration

  • 🛒 Advanced Order Execution: Place market and limit orders with options for time-in-force and expiration, and execute multiple orders in a single batch transaction
  • 📋 Comprehensive Order Management: List all open orders, cancel single or multiple orders, and atomically cancel-and-replace orders for efficient trading
  • 📊 Real-time Market Data: Access live tickers, full order books, historical kline (candlestick) data, and recent trade histories for all available markets
  • 💳 On-chain Account Management: Deposit and withdraw funds, check all asset balances, and monitor account health and margin requirements in real-time
  • 🧮 Pre-trade Analysis: Calculate the margin requirement for a potential trade before execution
  • ⚙️ SDK Configuration: Dynamically configure the Citrex SDK for different environments (mainnet/testnet) and sub-accounts
    </details>

<details> <summary>Kame DEX Aggregator Integration</summary>

🐢 Kame DEX Aggregator Integration

  • 💱 Aggregated Swap Quotes: Get efficient swap quotes by sourcing liquidity from multiple DEXs on Sei
  • Direct Swap Execution: Execute token swaps directly through the aggregator with configurable slippage
  • 🔎 Token & Price Discovery: Browse and search the list of available tokens on the platform and fetch their real-time prices
  • 🔒 Offline Transaction Building: Generate raw transaction calldata for swaps to be used with external signers or systems
    </details>

<details> <summary>Coingecko Market Data Integration</summary>

🦎 CoinGecko Market Data Integration

  • ⏱️ Real-time Price Data: Get current prices, market caps, and 24-hour volume for thousands of cryptocurrencies
  • 📜 Historical Data: Fetch historical price data for tokens with daily, hourly, or minutely intervals
  • 🔎 Token Discovery: Search for tokens, discover trending assets, and find token details by contract address </details>

<details> <summary>DexScreener DEX Analytics Integration</summary>

📈 DexScreener DEX Analytics Integration

  • ⏱️ Real-time Pair Data: Search and retrieve live trading pair data from thousands of DEXs
  • 🔎 Token & Pair Discovery: Find tokens by name, symbol, or address, and discover their multi-chain presence
  • 🔗 On-chain Activity: Get information on recently updated tokens, community-boosted tokens, and trading activity on specific chains </details>

<details> <summary>Comprehensive Transaction Support</summary>

🚀 Comprehensive Transaction Support

  • 💸 Native token transfers across all supported networks
  • Gas estimation for effective transaction planning
  • 🔄 Transaction status and receipt updates
  • 🔑 Wallet utility to derive an EVM address from a private key
  • ⚠️ Error handling with descriptive failure messages </details>

<details> <summary>Hive Intelligence Blockchain Querying</summary>

🐝 Hive Intelligence Blockchain Querying

  • 🗣️ Natural Language Interface: Query blockchain data using plain English questions instead of structured tool calls (e.g., "What is the transaction history for wallet 0x...?")
  • 📊 Versatile Data Retrieval: Ask for wallet holdings, transaction histories, token information, and more through a single, unified prompt
  • Simplified Interaction: Lowers the barrier to entry for accessing complex on-chain information by removing the need to know specific tool names or parameters
    </details>

🌐 Supported Networks

  • Sei Mainnet
  • Sei Testnet
  • Sei Devnet

🛠️ Prerequisites

  • Bun 1.0.0 or higher
  • Node.js 18.0.0 or higher (if not using Bun)

📦 Installation

# Clone the repository
git clone https://github.com/testinguser1111111/sei-mcp-server.git
cd sei-mcp-server

# Install dependencies with Bun
bun install

# Or with npm
npm install

⚙️ Server Configuration

The server uses the following default configuration:

  • Default Chain ID: 1329 (Sei Mainnet)
  • Server Port: 3001
  • Server Host: 0.0.0.0 (accessible from any network interface)

These values are hardcoded in the application. If you need to modify them, you can edit the following files:

  • For chain configuration: src/core/chains.ts
  • For server configuration: src/server/http-server.ts

Environment Variables

The server supports loading configuration from environment variables:

  • PRIVATE_KEY: Required private key for any blockchain operations that involve signing transactions (e.g., transferring tokens, interacting with smart contracts that modify state). This is the sole method for providing a private key. If this environment variable is not set when a transaction-signing tool is invoked, the tool will return an error message instructing the AI assistant to ask the user to set the PRIVATE_KEY environment variable and restart the MCP server.
  • COINGECKO_PRO_API_KEY: Optional CoinGecko Pro API key for accessing CoinGecko API services.
  • SEITRACE_API_KEY: Optional SeiTrace Insights API key for accessing SeiTrace Insights API services.
  • OPENSEA_API_KEY: Optional OpenSea API key for accessing OpenSea API services.
  • HIVE_INTELLIGENCE_API_KEY: Optional Hive Intelligence API key for accessing Hive Intelligence API services.

Create a .env file in the root directory based on the .env.example template:

# .env.example
PRIVATE_KEY=your_private_key_here
COINGECKO_PRO_API_KEY=your_coingecko_pro_api_key_here
SEITRACE_API_KEY=your_seitrace_api_key_here
OPENSEA_API_KEY=your_opensea_api_key_here
HIVE_INTELLIGENCE_API_KEY=your_hive_intelligence_api_key_here

SECURITY WARNING: Never commit your actual private key, API keys, or any sensitive information to version control. The .env file is included in .gitignore by default.

🚀 Usage

Using with Claude Desktop

  1. Install the Claude Desktop.
  2. Go to Settings > Developer > Edit Config.
  3. Add the following to the mcpServers section:
{
  "mcpServers": {
    "sei": {
      "command": "npx",
      "args": [
        "-y",
        "@sei-mcp-v2/sei-mcp-server"
      ],
      "env": {
        "PRIVATE_KEY": "your_private_key_here",
        "COINGECKO_PRO_API_KEY": "your_coingecko_pro_api_key_here",
        "SEITRACE_API_KEY": "your_seitrace_api_key_here",
        "OPENSEA_API_KEY": "your_opensea_api_key_here",
        "HIVE_INTELLIGENCE_API_KEY": "your_hive_intelligence_api_key_here"
      }
    }
  }
}
  1. Save the configuration file and restart Claude. When done, Claude will add new prompts, resources and tools. To access prompts, click "+" button in the bottom left corner. And then "Add from sei".

Sei Prompts

From there, click "Add from sei" to and for example, add a "my_wallet_address" prompt. Claude should invoke now get_address_from_private_key tool and return the wallet address. Sometimes, model may fail to understand tbe prompt or random question. Try to add a bit more context or retry with extensive thinking option.

All tools available could be found by clicking "Search And Tools" button and then "sei".

Claude Search And Tools Sei Tools

Using npx (No Installation Required)

You can run the Sei MCP Server directly without installation using npx:

# Run the server in stdio mode (for CLI tools)
npx @sei-mcp-v2/sei-mcp-server

# Run the server in HTTP mode (for web applications)
npx @sei-mcp-v2/sei-mcp-server --http

Running the Server Locally

Start the server using stdio (for embedding in CLI tools):

# Start the stdio server
bun start

# Development mode with auto-reload
bun dev

Or start the HTTP server with SSE for web applications:

# Start the HTTP server
bun start:http

# Development mode with auto-reload
bun dev:http

Connecting to the Server

Connect to this MCP server using any MCP-compatible client. For testing and debugging, you can use the MCP Inspector.

Connecting from Cursor

To connect to the MCP server from Cursor:

  1. Open Cursor and go to Settings (gear icon in the bottom left)
  2. Scroll down to "MCP" section
  3. Click "Add new Global MCP server"
  4. In mcp.json tab add the following configuration
{
  "mcpServers": {
    "sei-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@sei-mcp-v2/sei-mcp-server"
      ],
      "env": {
        "PRIVATE_KEY": "your_private_key_here",
        "COINGECKO_PRO_API_KEY": "your_coingecko_pro_api_key_here",
        "SEITRACE_API_KEY": "your_seitrace_api_key_here",
        "OPENSEA_API_KEY": "your_opensea_api_key_here",
        "HIVE_INTELLIGENCE_API_KEY": "your_hive_intelligence_api_key_here"
      }
    }
  }
}

Example: HTTP Mode with SSE

If you're developing a web application and want to connect to the HTTP server with Server-Sent Events (SSE), you can use this configuration:

{
  "mcpServers": {
    "sei-mcp-sse": {
      "url": "http://localhost:3001/sse"
    }
  }
}

This connects directly to the HTTP server's SSE endpoint, which is useful for:

  • Web applications that need to connect to the MCP server from the browser
  • Environments where running local commands isn't ideal
  • Sharing a single MCP server instance among multiple users or applications

To use this configuration:

  1. Create a .cursor directory in your project root if it doesn't exist
  2. Save the above JSON as mcp.json in the .cursor directory
  3. Restart Cursor or open your project
  4. Cursor will detect the configuration and offer to enable the server(s)

Example: Using the MCP Server in Cursor

After configuring the MCP server with mcp.json, you can easily use it in Cursor. Here's an example workflow:

  1. Create a new JavaScript/TypeScript file in your project:
// blockchain-example.js
async function main() {
  try {
    // Get Sei balance for an address
    console.log("Getting Sei balance for 0x1234...");
    
    // When using with Cursor, you can simply ask Cursor to:
    // "Check the Sei balance of 0x1234 on mainnet"
    // Or "Transfer 0.1 Sei from my wallet to 0x1234"
    
    // Cursor will use the MCP server to execute these operations 
    // without requiring any additional code from you
    
    // This is the power of the MCP integration - your AI assistant
    // can directly interact with blockchain data and operations
  } catch (error) {
    console.error("Error:", error.message);
  }
}

main();
  1. With the file open in Cursor, you can ask Cursor to:

    • "Check the current Sei balance of 0x1234 on mainnet"
    • "Show me the latest block on Sei"
    • "Check if 0x1234... is a contract address"
  2. Cursor will use the MCP server to execute these operations and return the results directly in your conversation.

The MCP server handles all the blockchain communication while allowing Cursor to understand and execute blockchain-related tasks through natural language.

Connecting using Claude CLI

If you're using Claude CLI, you can connect to the MCP server with just two commands:

# Add the MCP server
claude mcp add sei-mcp-server npx @sei-mcp/sei-mcp-server

# Start Claude with the MCP server enabled
claude

Example: Getting a Token Balance

// Example of using the MCP client to check a token balance
const mcp = new McpClient("http://localhost:3000");

const result = await mcp.invokeTool("get-token-balance", {
  tokenAddress: "0x3894085ef7ff0f0aedf52e2a2704928d1ec074f1", // USDC on Sei
  ownerAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", 
  network: "sei"
});

console.log(result);
// {
//   tokenAddress: "0x3894085ef7ff0f0aedf52e2a2704928d1ec074f1",
//   owner: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
//   network: "sei",
//   raw: "1000000000",
//   formatted: "1000",
//   symbol: "USDC",
//   decimals: 6
// }

📚 API Reference

Tools

The server provides the following MCP tools for agents. <details> <summary>Tools</summary>

<details> <summary> 🔹 Token & Wallet Tools</summary>

These tools are used to interact with the blockchain and perform various operations.

🔹 Native SEI

Tool Description Parameters
get_address_from_private_key Get the EVM address derived from the PRIVATE_KEY env variable
get_balance Get the native token (SEI) balance for an address address (address), network
transfer_sei Transfer native SEI tokens to an address to (address), amount, network

🔹 ERC20 Tokens

Tool Description Parameters
get_token_info Get comprehensive information about an ERC20 token tokenAddress (address), network
get_erc20_balance Get the ERC20 token balance of an EVM address address (address), tokenAddress (address), network
transfer_erc20 Transfer ERC20 tokens to another address tokenAddress (address), toAddress (address), amount, network
approve_token_spending Approve an address to spend your ERC20 tokens tokenAddress (address), spenderAddress (address), amount, network

🔹 NFTs (ERC721)

Tool Description Parameters
get_nft_info Get detailed information about a specific NFT (ERC721) tokenAddress (address), tokenId, network
get_nft_balance Get the total number of NFTs an address owns from a collection tokenAddress (address), ownerAddress (address), network
check_nft_ownership Check if an address owns a specific NFT (ERC721) tokenAddress (address), tokenId, ownerAddress (address), network
transfer_nft Transfer an NFT (ERC721 token) to another address tokenAddress (address), tokenId, toAddress (address), network

🔹 Multi-Token (ERC1155)

Tool Description Parameters
get_erc1155_balance Get the balance of a specific ERC1155 token ID for an address tokenAddress (address), tokenId, ownerAddress (address), network
get_erc1155_token_uri Get the metadata URI for an ERC1155 token tokenAddress (address), tokenId, network
transfer_erc1155 Transfer ERC1155 tokens to another address tokenAddress (address), tokenId, amount, toAddress (address), network

🔹 Wrapping / Unwrapping

Tool Description Parameters
wrap_sei_directly Wrap SEI into WSEI wrappedSeiAddress (address), amount, network
unwrap_sei_directly Unwrap WSEI back to SEI wrappedSeiAddress (address), amount, network
</details>

<details> <summary> 🪙 ERC20 Deployment & Management Tools</summary>

These tools help you deploy and manage ERC20 tokens.

⚒️ Tool Name 📖 Description 🔑 Key Parameters
🚀 deploy_erc20 Deploys a new ERC20 token to the specified network. network, name, symbol, initialSupply, decimals
🔍 verify_erc20_contract_locally Verifies a deployed ERC20 by checking its on-chain parameters. contractAddress, name, symbol, initialSupply, decimals, network
📝 verify_erc20_contract Submits an ERC20 contract's source code for verification on SeiTrace. contractAddress, name, symbol, initialSupply, decimals, network
📡 check_verification_status Checks the verification status of a contract on SeiTrace. contractAddress, network
💰 mint_erc20_tokens Mints additional tokens from a deployed ERC20 contract. tokenAddress, toAddress, amount, network
</details>

<details> <summary> 🎨 ERC721 (NFT) Deployment & Management Tools</summary>

These tools help you deploy and manage ERC721 (NFT) tokens.

⚒️ Tool Name 📖 Description 🔑 Key Parameters
🚀 deploy_erc721 Deploys a new ERC721 (NFT) token contract. network, name, symbol, baseURI_
🔍 verify_erc721_contract_locally Verifies a deployed ERC721 by checking its on-chain parameters. contractAddress, name, symbol, baseURI_, network
📝 verify_erc721_contract Submits an ERC721 contract's source code for verification on a block explorer. contractAddress, name, symbol, baseURI_, network
🎁 mint_nft Mints a single new NFT from the collection to a specified address. nftContractAddress, toAddress, network
📦 mint_batch_nfts Mints a batch of new NFTs to a specified address. nftContractAddress, toAddress, quantity, network
</details>

<details> <summary> 🔹 DragonSwap DEX Tools</summary>

These tools help you interact with DragonSwap for token swaps, routes, and trade checks.

🔄 Swapping

Tool Description Parameters
dragonswap_get_swap_quote Get a swap quote for a single token pair quoterAddress, amountIn, tokenIn, tokenOut, fee
dragonswap_get_multi_hop_swap_quote Get a swap quote for a multi-hop path quoterAddress, amountIn, path
dragonswap_get_optimal_swap_route Find the best swap route (direct or multi-hop) for the best price quoterAddress, tokenIn, tokenOut, amountIn
dragonswap_execute_swap Execute a single-hop token swap routerAddress, tokenIn, tokenOut, amountIn, amountOutMinimum, recipient
dragonswap_execute_multi_hop_swap Execute a multi-hop swap using an encoded path routerAddress, path, amountIn, amountOutMinimum, recipient

💧 Liquidity Provision

Tool Description Parameters
dragonswap_add_liquidity Add liquidity to a V3 pool within a specific tick range positionManagerAddress, token0, token1, fee, tickLower, tickUpper, amount0Desired, amount1Desired, ...
dragonswap_remove_liquidity Remove liquidity from a position NFT positionManagerAddress, tokenId, liquidity, amount0Min, amount1Min
dragonswap_collect_fees Collect accrued fees from a liquidity position positionManagerAddress, tokenId, recipient
dragonswap_get_position_info Get detailed information about a liquidity position NFT positionManagerAddress, tokenId

🏦 Pool Information

Tool Description Parameters
dragonswap_get_token_price Get the current price of a token from a specific pool poolAddress, tokenAddress
dragonswap_get_pool_address Get the address of an existing pool for a token pair and fee factoryAddress, tokenA, tokenB, fee
dragonswap_create_pool Create a new liquidity pool for a token pair and fee factoryAddress, tokenA, tokenB, fee
dragonswap_get_pool_info Get comprehensive information about a specific pool poolAddress
dragonswap_get_pool_historical_data Get historical swap, mint, and burn events for a pool poolAddress, fromBlock, toBlock
dragonswap_monitor_pool Monitor a pool for real-time events like swaps, mints, and burns poolAddress, callback

🛠 Utilities

Tool Description Parameters
dragonswap_check_token_allowance Check the token allowance for a spender tokenAddress, owner, spender
dragonswap_calculate_impermanent_loss Calculate the impermanent loss for a liquidity position initialPrice, currentPrice, initialAmount0, initialAmount1
dragonswap_batch_operations Batch multiple operations (e.g., swap and add liquidity) into one transaction routerAddress, operations
</details>

<details> <summary> 🏦 Yei Finance Lending Tools</summary>

These tools help you interact with Yei Finance for token lending and borrowing.

📊 Market & User Data

⚒️ Tool Name 📖 Description 🔑 Key Parameters
📡 get_yei_reserves Get data for all available reserve assets in the Yei Finance pool. network
👤 get_yei_user_account Get a user's account data, including health factor and balances. userAddress, network

⚡ Core Actions

⚒️ Tool Name 📖 Description 🔑 Key Parameters
approve_yei_token Approve the Yei Finance pool to spend a specified amount of a token. tokenAddress, amount, network
💰 supply_yei_asset Supply (deposit) an ERC20 token to the pool to earn interest. reserveAddress, amount, onBehalfOf, network
🪙 supply_yei_native_asset Supply (deposit) the native asset (SEI) to the pool. amount, onBehalfOf, network
💳 borrow_yei_asset Borrow an asset against supplied collateral. reserveAddress, amount, interestRateMode, onBehalfOf, network
🔄 repay_yei_asset Repay a borrowed asset to the pool. reserveAddress, amount, interestRateMode, onBehalfOf, network
📤 withdraw_yei_asset Withdraw a supplied ERC20 asset from the pool. reserveAddress, amount, toAddress, network
🏧 withdraw_native_asset Withdraw the native asset (SEI) from the pool. amount, toAddress, network

🛡️ Position Management

⚒️ Tool Name 📖 Description 🔑 Key Parameters
🏗️ set_collateral_status Enable or disable a supplied asset to be used as collateral. reserveAddress, useAsCollateral, network
⚙️ set_emode_category Enter or exit a High-Efficiency Mode (E-Mode) category. categoryId, network

🧠 Advanced Features

⚒️ Tool Name 📖 Description 🔑 Key Parameters
execute_flash_loan Executes a flash loan with multiple assets. receiverAddress, assets, amounts, onBehalfOf, network
🤝 delegate_credit_by_asset Delegate borrowing power to another address for a specific asset. underlyingAssetAddress, delegateeAddress, amount, interestRateMode, network
</details>

<details> <summary> 🎶 Symphony DEX Aggregator Tools</summary>

These tools help you interact with Symphony for token swaps and route discovery.

⚙️ Configuration

Tool Name Description Key Parameters
get_symphony_config Retrieves the current configuration of the Symphony SDK instance.
set_symphony_config Updates the configuration of the Symphony SDK instance. options

🔎 Token & Route Discovery

Tool Name Description Key Parameters
get_symphony_token_list Retrieves the list of all available tokens for swapping.
is_symphony_token_listed Checks if a given token address is available for swaps. tokenAddress
get_symphony_route Finds the best swap route for a given token pair without executing. tokenInAddress, tokenOutAddress, amount
get_symphony_total_amount_out Calculates the total output amount for a given swap route. tokenInAddress, tokenOutAddress, amount

🔄 Swap Execution

Tool Name Description Key Parameters
swap_on_symphony Swaps one token for another using the optimal route. tokenInAddress, tokenOutAddress, amount
swap_on_symphony_advanced Swaps tokens with advanced options for routing, execution, and slippage. tokenInAddress, tokenOutAddress, amount, params

📜 Transaction Management

Tool Name Description Key Parameters
check_symphony_approval Checks if the protocol has sufficient allowance to spend a token. tokenInAddress, tokenOutAddress, amount
approve_symphony_token Approves the protocol to spend a specific token for swapping. tokenInAddress, tokenOutAddress, amount
generate_symphony_swap_calldata Generates the transaction calldata for a swap without executing it. tokenInAddress, tokenOutAddress, amount
</details>

<details> <summary> 🌉 deBridge Cross-Chain Tools</summary>

These tools help you interact with deBridge for cross-chain asset transfers.

📝 Order Creation & Execution

Tool Name Description Key Parameters
create_debridge_order Creates a cross-chain order. Returns an estimation or a signable transaction. srcChainId, srcChainTokenIn, srcChainTokenInAmount, dstChainId, dstChainTokenOut, dstChainTokenOutRecipient
🔗 create_and_execute_debridge_order Creates and executes a deBridge cross-chain order in one step. srcChainId, srcChainTokenIn, srcChainTokenInAmount, dstChainId, dstChainTokenOut
🧪 get_debridge_quote_by_name Gets a deBridge quote using chain names (for dev use only). srcChain, srcChainTokenIn, srcChainTokenInAmount, dstChain, dstChainTokenOut

📜 Order Tracking & History

Tool Name Description Key Parameters
🕵️ get_debridge_orders_by_wallet Retrieves a list of historical deBridge orders for a wallet. address, orderStates, giveChainIds, takeChainIds, skip, take
🔍 get_debridge_order_by_tx_hash Retrieves details of a deBridge order by its creation transaction hash. txHash
🧾 get_debridge_order_ids_by_tx_hash Retrieves all deBridge order IDs created in a single transaction. txHash
get_debridge_order_status_by_id Retrieves the status and details of a specific deBridge order. orderId

🛠️ Order Management

Tool Name Description Key Parameters
cancel_debridge_order Cancels an unfulfilled deBridge order. orderId
</details>

<details> <summary> 🌉 Li.Fi Cross-Chain Tools</summary>

These tools help you interact with Li.Fi for cross-chain asset transfers.

Tool Name Description Key Parameters
🔎 get_lifi_quote Gets a single cross-chain swap quote from Li.Fi. fromChainId, toChainId, fromTokenAddress, toTokenAddress, fromAmount
🛤️ get_lifi_route Gets all available routes for a cross-chain swap. fromChainId, toChainId, fromTokenAddress, toTokenAddress, fromAmount
create_and_execute_lifi_order Creates and executes a Li.Fi cross-chain swap in one step. fromChainId, toChainId, fromTokenAddress, toTokenAddress, fromAmount
🌐 get_lifi_chains Fetches all EVM chains supported by the Li.Fi SDK.
💠 get_lifi_token Fetches details for a specific token on a given chain. chainId, tokenAddress
</details>

<details> <summary> 🖼️ OpenSea NFT Marketplace Tools</summary>

These tools help you interact with OpenSea for NFT discovery and information.

🔹 Discovery & Information

Tool Description Key Parameters
get_opensea_account Get an OpenSea Account Profile. addressOrUsername
get_opensea_collections Get a list of OpenSea collections for the Sei chain.
get_opensea_collection_stats Get stats for a single collection. collectionSlug
get_opensea_nft Get a single NFT's metadata, traits, and ownership info. address, identifier
get_opensea_nfts_by_account Get NFTs owned by a given account address on the Sei chain. address
get_opensea_nfts_by_collection Get multiple NFTs for a collection. collectionSlug
get_opensea_contract Get a smart contract for a given address on the Sei chain. address

🔹 Activity & Events

Tool Description Key Parameters
get_opensea_events_by_account Get a list of events for an account. address, options
get_opensea_events_by_collection Get a list of events for a collection. collectionSlug
get_opensea_events_by_nft Get a list of events for a single NFT. address, identifier

🔹 Trading & Order Management

Tool Description Key Parameters
get_opensea_best_listings_by_collection Get the cheapest active listings on a single collection. collectionSlug
get_opensea_best_listing_for_nft Get the best (lowest priced) listing for a single NFT. collectionSlug, identifier
create_opensea_listing Create and submit a listing for an asset on OpenSea. params
create_opensea_offer Create and submit an offer for an asset on OpenSea. asset, accountAddress, startAmount
create_opensea_collection_offer Create and submit a collection offer. collectionSlug, accountAddress, amount, quantity
fulfill_opensea_order Fulfill an order for an asset (listing or offer). order, accountAddress
buy_opensea_nft Buy an NFT by fetching its best listing and fulfilling the order. collectionSlug, identifier, accountAddress
cancel_opensea_order Cancel an order on-chain to prevent it from being fulfilled. order, accountAddress
</details>

<details> <summary> ⛓ Blockchain & Contract Tools</summary>

These tools help you interact with the blockchain and smart contracts.

Tool Description Parameters
get_chain_info Get information about a supported network network
get_supported_networks Get a list of all supported EVM networks
get_block_by_number Get a block by its number blockNumber, network
get_latest_block Get the latest block from the blockchain network
get_transaction Get detailed information about a transaction by its hash txHash, network
get_transaction_receipt Get a transaction receipt by its hash txHash, network
estimate_gas Estimate the gas cost for a transaction to, value (optional), data (optional), network
is_contract Check if an address is a smart contract or an EOA address, network
read_contract Read data from a smart contract (view/pure function) contractAddress, abi, functionName, args (optional), network
write_contract Write data to a smart contract (state-changing function) contractAddress, abi, functionName, args, network
</details>

<details> <summary> 📊 CoinGecko Market Data Tools</summary>

These tools let you fetch token prices, market data, and trending coins from CoinGecko.

Tool Name Description Key Parameters
📈 get_token_price Gets current price and market data for a token. tokenId, vsCurrency
📊 get_multiple_token_prices Gets current prices for multiple tokens in a single call. tokenIds, vsCurrency
get_token_historical_data Gets historical price data for a token. tokenId, vsCurrency, days, interval
🔍 search_tokens Searches for tokens on CoinGecko by name or symbol. query
🚀 get_trending_tokens Gets currently trending tokens from CoinGecko.
🔗 get_token_by_contract Gets token information by its on-chain contract address. platformId, contractAddress
</details>

<details> <summary> 📊 DexScreener Analytics Tools</summary>

These tools let you analyze token pairs, profiles, and activity across chains using DexScreener.

Tool Name Description Key Parameters
🔍 dex_search_pairs Search for token pairs by name, symbol, or address. query
🪙 dex_get_token_pairs Get all pairs for a specific token address. tokenAddresses
🔗 dex_get_pairs_by_address Get information for a specific pair contract address. chainId, pairAddress
📄 dex_get_token_profile Get a token's profile, including description and links. chainId, tokenAddress
🆕 dex_get_latest_token_profiles Get recently updated or active token profiles.
🚀 dex_get_top_boosted_tokens Get tokens that have been promoted by their communities.
📈 dex_get_orders_by_chain Get recent trading activity for a token on a specific chain. chainId, tokenAddress
🎯 dex_advanced_search Perform multiple, limited searches for token pairs. queries, limit
🌐 dex_get_multi_chain_token_data Get pair data for a token across multiple chains. tokenAddresses, maxPairsPerToken
</details>

<details> <summary> 🔍 SeiTrace Insights Tools</summary>

These tools let you analyze token pairs, profiles, and activity across chains using SeiTrace.

📌 Address & Contract Tools

Tool Description Key Parameters
seitrace_get_address_details Get details for a wallet or contract address. network, address
seitrace_get_smart_contract_details Fetch detailed smart contract information. network, address

📜 Transaction History Tools

Tool Description Key Parameters
seitrace_get_address_transactions Fetch transactions for an address. network, address, status, limit, offset, from_date, to_date
seitrace_get_address_token_transfers Get all token transfers for an address. network, address, limit, offset
seitrace_get_erc20_token_transfers ERC20 transfers for a specific contract. network, contract_address, wallet_address, limit
seitrace_get_erc721_token_transfers NFT (ERC721) transfers for a collection. network, contract_address, wallet_address, token_id
seitrace_get_erc1155_token_transfers ERC1155 token transfers for a contract. network, contract_address, wallet_address, token_id
seitrace_get_native_token_transfers Native token (SEI) transfers. network, token_denom, wallet_address

🪙 Token Information Tools

Tool Description Key Parameters
seitrace_get_erc20_token_info ERC20 token details. network, contract_address
seitrace_get_erc721_token_info ERC721 collection details. network, contract_address
seitrace_get_erc1155_token_info ERC1155 contract details. network, contract_address
seitrace_get_native_token_info Native token details. network, token_denom

💰 Token Balances & Holders

Tool Description Key Parameters
seitrace_get_erc20_balances Get ERC20 balances for a wallet. network, address, limit
seitrace_get_erc721_balances Get NFT balances for a wallet. network, address, limit
seitrace_get_erc1155_balances Get ERC1155 balances for a wallet. network, address, limit
seitrace_get_native_balances Get native balances for a wallet. network, address, limit
seitrace_get_erc20_token_holders List holders of an ERC20 token. network, contract_address, limit
seitrace_get_erc721_token_holders List holders of an NFT collection. network, contract_address, limit
seitrace_get_erc1155_token_holders List holders of an ERC1155 token. network, contract_address, limit
seitrace_get_native_token_holders List holders of a native token. network, token_denom, limit

🎨 NFT Tools

Tool Description Key Parameters
seitrace_get_erc721_instances Get specific NFTs in a collection. network, contract_address, token_id, limit
seitrace_get_erc1155_instances Get ERC1155 token instances. network, contract_address, token_id, limit
</details>

<details> <summary> 🏦 Citrex Perpetuals Exchange Tools</summary>

These tools let you interact with the Citrex Perpetuals Exchange.

📊 Market Data

Tool Description Key Parameters
citrex_get_tickers Fetches ticker information for one or all markets. symbol
citrex_get_product Fetches product information by its ID or symbol. identifier
citrex_get_products Fetches all available products and their mark prices.
citrex_get_order_book Fetches the order book for a specific market. symbol
citrex_get_klines Fetches historical kline (candlestick) data for a product. productSymbol, optionalArgs
citrex_get_trade_history Fetches the recent trade history for a product. productSymbol, quantity
citrex_get_server_time Fetches the current server time from the exchange.

🧾 Account Management

Tool Description Key Parameters
citrex_get_account_health Fetches the health and margin information of the account.
citrex_list_balances Fetches a list of all asset balances for the user's account.
citrex_deposit Deposits funds into the user's Citrex account. amount
citrex_withdraw Withdraws funds from the user's Citrex account. amount

💹 Trading & Order Management

Tool Description Key Parameters
citrex_list_open_orders Lists the user's open orders for a specific market or all. productSymbol
citrex_calculate_margin_requirement Calculates margin requirement for a potential trade. isBuy, price, productId, quantity
citrex_place_order Places a new order on the exchange. orderArgs
citrex_place_orders Places multiple new orders in a single transaction. ordersArgs
citrex_cancel_order Cancels an existing open order. orderId, productId
citrex_cancel_orders Cancels multiple existing open orders in a single transaction. ordersArgs
citrex_cancel_and_replace_order Atomically cancels an order and replaces it with a new one. orderId, orderArgs
citrex_cancel_open_orders_for_product Cancels all open orders for a specific product. productId

⚙️ SDK Configuration

Tool Description Key Parameters
citrex_get_config Retrieves the configuration currently used by the SDK.
citrex_update_config Updates and re-initializes the Citrex SDK instance. debug, environment, rpc, subAccountId
</details>

<details> <summary> 🪙 Kame DEX Aggregator Tools</summary>

These tools let you interact with the Kame DEX Aggregator.

🔹 Swapping & Quoting

Tool Description Key Parameters
get_kame_quote Retrieves a quote for a token swap from the Kame Aggregator. fromTokenAddress, toTokenAddress, amount
swap_on_kame Executes a token swap on the Kame Aggregator. fromTokenAddress, toTokenAddress, amount, slippage
generate_kame_swap_calldata Generates the transaction calldata for a swap without executing it. fromTokenAddress, toTokenAddress, amount

🔹 Token & Price Discovery

Tool Description Key Parameters
get_kame_token_list Retrieves a list of tokens from the Kame Aggregator. ids, cursor, count, pattern
get_kame_prices Retrieves token prices from the Kame Aggregator. ids
</details>

<details> <summary> ❓ Hive Intelligence Query Tool</summary>

These tools let you interact with the Hive Intelligence Query Tool.

Tool Description Key Parameters
search_hive_intelligence Sends a natural language prompt to retrieve blockchain data like wallet holdings, transaction history, and token information. prompt
</details>
</details>

Resources

<details> <summary>Resources</summary>

The server exposes blockchain data through the following MCP resource URIs.

⛓️ Blockchain Resources

<details> <summary>Blockchain Resources</summary>

Resource URI Pattern Description
evm://{network}/chain Chain information for a specific network
evm://chain Sei mainnet chain information
evm://{network}/block/{blockNumber} Block data by number
evm://{network}/block/latest Latest block data
evm://{network}/address/{address}/balance Native token balance
evm://{network}/tx/{txHash} Transaction details
evm://{network}/tx/{txHash}/receipt Transaction receipt with logs
</details>

🪙 Token Resources

<details> <summary>Token Resources</summary>

Resource URI Pattern Description
evm://{network}/token/{tokenAddress} ERC20 token information
evm://{network}/token/{tokenAddress}/balanceOf/{address} ERC20 token balance
evm://{network}/nft/{tokenAddress}/{tokenId} NFT (ERC721) token information
evm://{network}/nft/{tokenAddress}/{tokenId}/isOwnedBy/{address} NFT ownership verification
evm://{network}/erc1155/{tokenAddress}/{tokenId}/uri ERC1155 token URI
evm://{network}/erc1155/{tokenAddress}/{tokenId}/balanceOf/{address} ERC1155 token balance
</details>
</details>

🔒 Security Considerations

  • Private keys are used only for transaction signing and are never stored by the server
  • Consider implementing additional authentication mechanisms for production use
  • Use HTTPS for the HTTP server in production environments
  • Implement rate limiting to prevent abuse
  • For high-value services, consider adding confirmation steps

📁 Project Structure

sei-mcp-server/
├── src/
│   ├── index.ts                # Main stdio server entry point
│   └── server/                 # Server-related files
│   │    ├── http-server.ts      # HTTP server with SSE
│   │    └── server.ts           # General server setup
│   └── core/
│       ├── chains.ts           # Chain definitions and utilities 
│       ├── config.ts           # MCP configuration
│       ├── resources.ts        # MCP resources implementation
│       ├── prompts.ts          # MCP prompts implementation
│       ├── services/           # Core blockchain logic and service implementations
│       │   ├── index.ts        # Service exports
│       │   ├── abi/            # Contract ABI definitions
│       │   ├── balance.ts      # Balance services
│       │   ├── blocks.ts       # Block services
│       │   ├── citrex.ts       # Citrex perpetuals exchange services
│       │   ├── clients.ts      # RPC client utilities
│       │   ├── coingecko.ts    # CoinGecko API service logic
│       │   ├── contracts.ts    # Smart contract interaction services
│       │   ├── deBridge.ts     # deBridge cross-chain service logic
│       │   ├── deployERC20.ts  # ERC20 deployment service logic
│       │   ├── deployERC721.ts # ERC721 deployment service logic
│       │   ├── dexscreener.ts  # Dexscreener API service logic
│       │   ├── dragonswap.ts   # DragonSwap V3 DEX API service logic
│       │   ├── hive_intelligence.ts         # Hive Intelligence Query service logic
│       │   ├── kame_ag.ts         # Kame DEX Aggregator service logic
│       │   ├── lifi.ts         # Li.Fi cross-chain service logic
│       │   ├── network.ts      # Network and block services
│       │   ├── opensea.ts      # OpenSea NFT marketplace service logic
│       │   ├── seitrace.ts     # SeiTrace API service logic
│       │   ├── symphony.ts     # Symphony DEX Aggregator service logic
│       │   ├── tokens.ts       # Token metadata services
│       │   ├── transactions.ts # Transaction services
│       │   ├── transfers.ts    # Transfers services
│       │   ├── utils.ts        # Utility services
│       │   ├── wrappedSei.ts   # WSEI wrapping and unwrapping services
│       │   └── yeifinance.ts   # Yei Finance API service logic
│       └── tools/              # MCP tool registrations
│           ├── index.ts        # Tool exports
│           ├── citrex.ts       # Citrex perpetuals exchange tools
│           ├── coingecko.ts    # CoinGecko market data tools
│           ├── deBridge.ts     # deBridge cross-chain tools
│           ├── deployERC20.ts  # ERC20 deployment & management tools
│           ├── deployERC721.ts # ERC721 deployment & management tools
│           ├── dexscreener.ts  # Dexscreener analytics tools
│           ├── dragonswap.ts   # DragonSwap V3 DEX tools
│           ├── hive_intelligence.ts         # Hive Intelligence Query tools
│           ├── kame_ag.ts         # Kame DEX Aggregator tools
│           ├── lifi.ts         # Li.Fi cross-chain tools
│           ├── network.ts      # Network and block tools
│           ├── opensea.ts      # OpenSea NFT marketplace tools
│           ├── seitrace.ts     # SeiTrace Insights tools
│           ├── symphony.ts     # Symphony DEX Aggregator tools
│           ├── token.ts        # Token and wallet tools
│           └── yeifinance.ts   # Yei Finance tools
├── .env.example                # Example environment variables
├── .gitignore                  # Git ignore file
├── .npmignore                  # NPM ignore file
├── CHANGELOG.md                # Project changelog
├── LICENSE                     # Project license
├── package.json                # Project dependencies and scripts
├── tsconfig.json               # TypeScript compiler configuration
└── README.md                   # Project documentation

🛠️ Development

To modify or extend the server:

  1. Add new services in the appropriate file under src/core/services/
  2. Add new tools in the appropriate file under src/core/tools/
  3. Register new resources in src/core/resources.ts
  4. Add new network support in src/core/chains.ts
  5. To change server configuration, edit the hardcoded values in src/server/http-server.ts

📄 License

This project is licensed under the terms of the MIT License.

Made with ❤️ for Sei Ecosystem

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