Available Tools

Complete reference of all Sei MCP server tools

The Sei MCP Server provides various tools for blockchain operations, queries, documentation lookup, and more. By default, wallet tools are disabled and only read-only tools are available. Enable wallet tools to unlock transaction capabilities.

Wallet Tools Disabled by Default

For security, wallet-dependent tools require explicit configuration. Only read-only blockchain data tools are available by default.

Read-Only Tools (Always Available)

These tools work without wallet connection and are available by default:

Tool	Purpose	Example Usage
get_balance	Check SEI balance	”What’s my SEI balance?”
is_contract	Check if address is contract	”Is 0x3894… a contract?”
estimate_gas	Estimate transaction gas cost	”How much gas for this transaction?”

Wallet Tools (Require Configuration) 🔐

These tools require wallet configuration and are disabled by default for security.

Tool	Purpose	Example Usage
get_address_from_private_key	Get wallet address	”What’s my wallet address?”
transfer_sei	Send SEI tokens	”Send 1 SEI to 0x742d…”

Network & Blockchain Data

Tool	Purpose	Example Usage
get_chain_info	Get network information	”Show me Sei network info”
get_supported_networks	List supported networks	”What networks are supported?”
get_latest_block	Get latest block	”Get latest block”
get_block_by_number	Get specific block	”Get block 12345”
get_transaction	Get transaction details	”Analyze transaction 0xabc…”
get_transaction_receipt	Get transaction receipt	”Get receipt for 0xabc…”

Token Management

Read-Only Token Tools

Tool	Purpose	Example Usage
get_token_info	Get ERC-20 token details	”Get info for token 0x3894…”
get_token_balance	Check token balance	”What’s my USDC balance?”
get_erc20_balance	Check ERC-20 balance	”Check ERC20 balance for 0x742d…”
get_token_balance_erc20	Get ERC-20 token balance	”Get token balance for address”

Wallet-Required Token Tools 🔐

Tool	Purpose	Example Usage
transfer_token	Send ERC-20 tokens	”Send 100 USDC to 0x742d…”
transfer_erc20	Transfer ERC-20 tokens	”Transfer tokens to address”
approve_token_spending	Approve token spending	”Approve 1000 USDC for 0xDEX…”

NFT Operations (ERC-721)

Read-Only NFT Tools

Tool	Purpose	Example Usage
get_nft_info	Get NFT details	”Get info for NFT token 123”
check_nft_ownership	Verify NFT ownership	”Do I own NFT token 123?”
get_nft_balance	Count NFTs owned	”How many NFTs do I own?”

Wallet-Required NFT Tools 🔐

Tool	Purpose	Example Usage
transfer_nft	Transfer NFT	”Transfer NFT token 123 to 0x742d…”

Multi-Token Operations (ERC-1155)

Read-Only ERC-1155 Tools

Tool	Purpose	Example Usage
get_erc1155_balance	Get ERC-1155 token balance	”Check my ERC1155 token balance”
get_erc1155_token_uri	Get ERC-1155 metadata URI	”Get metadata for token ID 123”

Wallet-Required ERC-1155 Tools 🔐

Tool	Purpose	Example Usage
transfer_erc1155	Transfer ERC-1155 tokens	”Transfer ERC1155 token to address”

Smart Contract Operations

Read-Only Contract Tools

Tool	Purpose	Example Usage
read_contract	Read contract data	”Read balanceOf from contract 0x3894…”

Wallet-Required Contract Tools 🔐

Tool	Purpose	Example Usage
write_contract	Execute contract function	”Call contract function with params”
deploy_contract	Deploy new smart contract	”Deploy my token contract”

Documentation

Tool	Purpose	Example Usage
search_docs	Search the main Sei docs for general chain information, ecosystem providers, and user onboarding guides	”How do I bridge tokens to Sei?”
search_sei_js_docs	Search Sei-JS documentation	”How do I use precompiles with Viem?”

Enabling Wallet Tools

To use wallet-required tools (🔐), you must configure a wallet connection:

1. Set Private Key

   Add your private key to the MCP server configuration:

   {
     "mcpServers": {
       "sei": {
         "command": "npx",
         "args": ["-y", "@sei-js/mcp-server"],
         "env": {
           "WALLET_MODE": "private-key",
           "PRIVATE_KEY": "0x123..."
         }
       }
     }
   }
   

2. Restart MCP Server

   Restart your AI assistant (Claude Desktop, Cursor, etc.) to activate wallet tools.

See full setup guide →

Security Notes

Wallet tools require a private key for transaction signing. Ensure this key is:

• Kept secure and never shared
• Only used with funds you can afford to lose
• Properly backed up before use
• From a dedicated wallet, not your main holdings