sui-mcp-server

sui-mcp-server

   

The most comprehensive Sui blockchain MCP server. 53 tools with GraphQL + JSON-RPC dual transport -- wallets, DeFi (Cetus, DeepBook), SuiNS, staking, validators, Move introspection, and the full Sui RPC surface.

Competitors offer 10-15 tools for basic operations. This server covers the entire Sui ecosystem in a single package.

Install

npx sui-mcp-server

Or install globally:

npm install -g sui-mcp-server
sui-mcp-server

Configure

Add to your MCP config (claude_desktop_config.json or ~/.mcp.json):

{
  "mcpServers": {
    "sui": {
      "command": "npx",
      "args": ["-y", "sui-mcp-server"]
    }
  }
}

No API key required -- connects directly to Sui public RPC nodes.

Tools (53)

Wallet Management (4)

| Tool | Description | Key Params | |------|-------------|------------| | create_wallet | Create a new Ed25519 keypair (in-memory only, not persisted) | -- | | import_wallet | Import from a Bech32-encoded private key (suiprivkey...) | privateKey | | list_wallets | List all wallets in the current session | -- | | get_balance | Get SUI balance for any address | address |

Coin Operations (4)

| Tool | Description | Key Params | |------|-------------|------------| | get_all_balances | All coin balances for an address (SUI + other coin types) | address | | get_coins | Coin objects of a specific type owned by an address | address, coinType | | get_coin_metadata | Metadata for a coin type (name, symbol, decimals) | coinType | | get_total_supply | Total circulating supply of a coin type | coinType |

Transfers (4)

| Tool | Description | Key Params | |------|-------------|------------| | transfer_sui | Transfer SUI between addresses (amount in SUI, not MIST) | from, to, amount | | transfer_objects | Transfer one or more objects to a recipient | from, objectIds, to | | merge_coins | Merge multiple coins into one (handles gas conflicts) | walletName, coinType | | split_coins | Split a coin into multiple coins | walletName, coinId, amounts |

Object Queries (5)

| Tool | Description | Key Params | |------|-------------|------------| | get_object | Full details of any on-chain object by ID | objectId | | get_owned_objects | Objects owned by an address with optional type filtering | address, type | | get_dynamic_fields | Dynamic fields of an object (tables, bags) | parentId | | multi_get_objects | Batch-fetch up to 50 objects in one call | objectIds | | get_object_history | Trace all transactions that touched a given object | objectId |

Transactions (4)

| Tool | Description | Key Params | |------|-------------|------------| | get_transaction | Full transaction details by digest | digest | | dry_run_transaction | Dry-run to preview effects without executing | txBytes | | query_transactions | Search by sender, recipient, object, or Move function | filter | | get_total_transactions | Total transaction count on the network | -- |

Move Smart Contracts (7)

| Tool | Description | Key Params | |------|-------------|------------| | move_call | Execute a Move function call | walletName, target, arguments | | dev_inspect | Simulate a Move call without executing (no wallet needed) | sender, target, arguments | | get_normalized_module | Full Move module definition (functions, structs) | package, module | | get_move_function | Move function details (params, return types, visibility) | package, module, function | | get_move_struct | Move struct definition (fields, abilities) | package, module, struct | | get_package_modules | List all modules in a Move package | package | | get_move_call_metrics | Network-wide Move call metrics | -- |

Staking (4)

| Tool | Description | Key Params | |------|-------------|------------| | get_stakes | All staking positions for an address | address | | request_add_stake | Stake SUI with a validator | walletName, amount, validator | | request_withdraw_stake | Withdraw staked SUI | walletName, stakedSuiId | | get_validators | Full validator set with APY, commission, and stake amounts | -- |

Events (1)

| Tool | Description | Key Params | |------|-------------|------------| | query_events | Query on-chain events by type, sender, package, or digest | filter |

Network & Analytics (9)

| Tool | Description | Key Params | |------|-------------|------------| | switch_network | Switch between mainnet, testnet, devnet, localnet | network | | get_network_info | Chain ID, epoch, gas price, latest checkpoint | -- | | get_latest_checkpoint | Latest checkpoint sequence number | -- | | get_reference_gas_price | Current reference gas price in MIST | -- | | get_checkpoint | Detailed checkpoint data by sequence number | sequenceNumber | | get_epoch_info | Historical epoch data (times, stakes, gas summaries) | epoch | | get_protocol_config | Sui protocol configuration (limits, features) | -- | | get_system_state | Full system state: epoch, validators, storage fund | -- | | get_committee_info | Validator committee info for any epoch | epoch |

SuiNS Name Service (4)

| Tool | Description | Key Params | |------|-------------|------------| | resolve_name | Resolve example.sui to a Sui address | name | | resolve_address | Reverse-resolve an address to SuiNS name(s) | address | | suins_get_name_record | Full name record -- NFT ID, target, expiration, metadata | name | | suins_get_price | Registration and renewal pricing by name length | length |

DeFi: Cetus DEX (2)

| Tool | Description | Key Params | |------|-------------|------------| | cetus_get_pools | Query Cetus CLMM pools by coin types | coinTypeA, coinTypeB | | cetus_get_pool | Detailed pool data for a specific Cetus pool | poolId |

DeFi: DeepBook (1)

| Tool | Description | Key Params | |------|-------------|------------| | deepbook_get_pool | DeepBook v3 order book data -- pool state and dynamic fields | poolId |

DeFi: Token Tools (3)

| Tool | Description | Key Params | |------|-------------|------------| | get_token_price | Token price by querying DeFi pool reserves | token | | swap_quote | Swap quote by simulating against a pool | tokenIn, tokenOut, amount | | list_common_tokens | Common Sui tokens with full coin type addresses | -- |

Faucet (1)

| Tool | Description | Key Params | |------|-------------|------------| | request_faucet | Request SUI from faucet (devnet and testnet only) | address |

Why This One?

• 53 tools vs 10-15. Competitors like 0xdwong/sui-mcp cover basic operations. This server includes DeFi (Cetus, DeepBook), SuiNS, Move introspection, staking, validators, and full analytics.
• GraphQL + JSON-RPC dual transport. Built on the official @mysten/sui v2.11 SDK with @mysten/suins for name service -- future-proofed for the GraphQL migration.
• Tested end-to-end. 59 passing tests across devnet, testnet, and mainnet. Wallet creation, transfers, staking, DeFi queries, SuiNS resolution, and Move inspection all verified.

Token Shortcuts

Use symbol shortcuts instead of full coin type addresses:

| Shortcut | Full Coin Type | |----------|---------------| | SUI | 0x2::sui::SUI | | USDC | 0xdba34672e...::usdc::USDC | | USDT | 0xc060006111...::coin::COIN | | WETH | 0xaf8cd5edc1...::coin::COIN | | DEEP | 0xdeeb7a4662...::deep::DEEP |

Networks

Starts on devnet by default. Switch at any time with switch_network:

| Network | RPC Endpoint | |---------|-------------| | mainnet | https://fullnode.mainnet.sui.io:443 | | testnet | https://fullnode.testnet.sui.io:443 | | devnet | https://fullnode.devnet.sui.io:443 | | localnet | http://127.0.0.1:9000 |

Security

• Keys are in-memory only -- never written to disk, never logged
• Private keys redacted from all error messages
• Rate limiting: 120 calls/minute (sliding window)
• All inputs validated with Zod strict schemas

Development

git clone https://github.com/ExpertVagabond/sui-mcp-server.git
cd sui-mcp-server
npm install
npm run build
npm start

License

MIT -- Matthew Karsten / Purple Squirrel Media