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Jupiter Solana Swap Quote API

br0ski777/jupiter-quotes-x402

This server connects Claude to Jupiter's aggregator for Solana token swaps. You get quote lookups that return the best swap route, price impact calculations, priority fee estimates, and USD pricing conversions. It's built for crypto agents that need to price trades or compare routes without executing on-chain. The API runs at jupiter-quotes.api.klymax402.com and uses SSE transport. Useful when you're building trading assistants, portfolio tools, or anything that needs to show swap prices and slippage before users commit. The x402 reference suggests USDC denomination, keeping everything in familiar stable terms.

tool
1
transport
SSE
last updated
May 16, 2026
View on GitHub

Tools

1 tools

Public tool metadata for what this MCP can expose to an agent.

jupiter_get_swap_quoteUse this when you need a swap quote on Solana. Returns the best route via Jupiter aggregator across all Solana DEXes with price impact and fee analysis. 1. inputToken: input token symbol and mint add4 params

Use this when you need a swap quote on Solana. Returns the best route via Jupiter aggregator across all Solana DEXes with price impact and fee analysis. 1. inputToken: input token symbol and mint add

Parameters* required
amountstring
Amount in raw lamports/smallest unit. e.g. 1000000000 = 1 SOL, 1000000 = 1 USDC
inputMintstring
Input token mint address or symbol (SOL, USDC, USDT). e.g. So11111111111111111111111111111111111111112 or SOL
outputMintstring
Output token mint address or symbol (SOL, USDC, USDT). e.g. EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v or USDC
slippagenumber
Slippage tolerance in basis points. Default 50 (0.5%). e.g. 100 = 1%

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Readme

Jupiter Solana Swap Quote API

MCP Server x402 License: MIT

Solana swap quotes via Jupiter aggregator -- best route, price impact, slippage, priority fees included. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

{
  "mcpServers": {
    "jupiter-quotes": {
      "url": "https://jupiter-quotes.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://jupiter-quotes.api.klymax402.com/api/quote?inputMint=...&outputMint=...&amount=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body

View the full README on GitHub

Details

Repository
github.com/br0ski777/jupiter-quotes-x402
Website
github.com/Br0ski777/jupiter-quotes-x402
Category
Finance & Commerce
Transport
SSE
Registry
MCP registry, active

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