io.github.ExpertVagabond/sui-mcp-server

Official

by ExpertVagabond · JavaScript

53-tool MCP server for Sui blockchain — wallets, DeFi, Move contracts, staking, SuiNS, analytics

53-tool server for Sui blockchain operations including wallets, DeFi, smart contracts, and staking.

Topics

ai-toolsblockchainmcpmcp-serversuiaimodel-context-protocoltoolsdefimoveweb3

README.md9 KBView on GitHub

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

bash

npx sui-mcp-server

Or install globally:

bash

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

Configure

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

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

bash

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

Install

claude_desktop_config.json

{
  "mcpServers": {
    "sui-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "sui-mcp-server@0.4.2"
      ]
    }
  }
}