jupiter_build_swap_transaction
Build a swap transaction on Jupiter
LABSCO SUMMARY
It covers quote, build and send and deliberately stops short of signing, so a private key never has to reach the server.
The split is what makes it usable: jupiter_get_quote is a pure read that can be called repeatedly to test slippageBps, onlyDirectRoutes and excludeDexes before anything is committed, and only jupiter_send_swap_transaction touches the network. Fee behaviour is explicit rather than inferred — prioritizationFeeLamports and computeUnitPriceMicroLamports are set on the build, skipPreflight and maxRetries on the send. Detail lives in the parameter names rather than the descriptions, which run to a single line each: asLegacyTransaction, maxAccounts and platformFeeBps arrive with no guidance on when to set them.
What it is
A three-tool Jupiter swap path for Solana: jupiter_get_quote prices a route, jupiter_build_swap_transaction turns that quote into a transaction, jupiter_send_swap_transaction submits it.
What you get
- Routing you control at quote time: jupiter_get_quote takes inputMint, outputMint, amount and swapMode, and narrows the route through slippageBps, onlyDirectRoutes, excludeDexes, maxAccounts and platformFeeBps.
- A build step tied to a specific wallet: jupiter_build_swap_transaction takes the quoteResponse and a userPublicKey, sets fee priority through prioritizationFeeLamports and computeUnitPriceMicroLamports, and can fall back to a legacy transaction with asLegacyTransaction.
- Submission with the failure modes exposed: jupiter_send_swap_transaction takes the swapTransaction or a serializedTransaction, with maxRetries and skipPreflight.
Requirements
No credentials are configured. Building needs the userPublicKey the swap is for, and submitting needs a signed transaction — no signing tool is exposed here, so the signature has to come from wherever the key lives.
Setup effort
One command — npx @mcp-dockmaster/mcp-server-jupiter
USE CASES
01
Pricing a swap before you commit to it
Quote the same pair repeatedly under different routing and slippage settings, and read the difference before anything is signed.
02
Executing a swap you have already priced
Turn the accepted quote into a transaction for your public key, set the fee priority you want, and submit it with retry behaviour of your choosing.
3 tools
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
jupiter_get_quote
Get a quote for swapping tokens on Jupiter
jupiter_send_swap_transaction
Send a swap transaction on Jupiter
BEFORE YOU INSTALL
What to know first
Tools you get
3 tools when we connected.
Requires
- npx on PATH
- Node.js
CONTEXT COST
Light Standing cost
Rated by the size of the 3 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
Connect your client
Add the block to your client, or run the command directly.
Server setup
Configuration file
JSON
{
"mcpServers": {
"mcp-server-jupiter": {
"command": "npx",
"args": [
"@mcp-dockmaster/mcp-server-jupiter"
]
}
}
}npx
TERMINAL
npx @mcp-dockmaster/mcp-server-jupiter
