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