CHAIN_LIST
Get chain list
LABSCO SUMMARY
SWAP builds a transaction rather than sending one, which puts the signing step outside this server entirely.
QUOTE and SWAP take the same shape — chain, input token address, output token address, amount and slippage — with SWAP additionally naming the account it is being built for. Because it constructs the transaction instead of submitting it, no private key is configured here and nothing in this tool set can move funds by itself. The listing tools matter more than they first appear: token addresses rather than symbols are what the quoting and swap calls consume, so TOKEN_LIST is the step that turns a human-readable pair into arguments that actually resolve.
What it is
An OpenOcean aggregator client with seven tools covering chain, token and DEX listings, gas price, transaction lookup, quoting and swap construction.
What you get
- The universe first: CHAIN_LIST returns the supported chains, TOKEN_LIST returns a chain's tokens, and DEX_LIST returns the exchanges aggregated on it.
- Conditions: GAS_PRICE returns the current gas price for a chain, and GET_TRANSACTION returns a transaction by chain and hash.
- Pricing and construction: QUOTE prices a pair from an input token address, an output token address, an amount and a slippage, and SWAP builds the swap transaction for an account using the same parameters.
Requirements
No credentials are configured on the server. SWAP builds a transaction for an account address you pass in, so signing and broadcasting happen outside it.
Setup effort
One command — pnpm add -g openocean-mcp
USE CASES
01
Quoting a pair before you commit
Confirm the chain and both tokens are covered, read the current gas price, and get the quote — so the number you act on includes what it costs to act.
02
Building the swap to sign somewhere else
Get the transaction back to sign with your own key rather than handing over a mnemonic, and check it once it is on chain.
7 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
DEX_LIST
Get dex list
GAS_PRICE
Get gas price
GET_TRANSACTION
Get Transaction
QUOTE
Quote the price of a specific trading pair
SWAP
Building swap transaction
TOKEN_LIST
Get token list
BEFORE YOU INSTALL
What to know first
Tools you get
7 tools when we connected. Tool names are uppercase (CHAIN_LIST, QUOTE, SWAP). SWAP returns an unsigned transaction for your wallet address; nothing signs or broadcasts, and no private key reaches the server. TOKEN_LIST is a tool, not an environment variable.
Requires
Node.js
Where it runs
Both documented setups run the server on your machine.
CONTEXT COST
Light Standing cost
Rated by the size of the 7 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Server setup
TERMINAL
pnpm add -g openocean-mcpMCP Clients
Any MCP client — pnpm
ANY MCP CLIENT — PNPM · JSON
{
"mcpServers": {
"openocean-mcp-server": {
"command": "pnpm",
"args": [
"dlx",
"openocean-mcp"
]
}
}
}Any MCP client — global npm
ANY MCP CLIENT — GLOBAL NPM · JSON
{
"mcpServers": {
"openocean-mcp-server": {
"command": "openocean-mcp",
"args": []
}
}
}
