Summary
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.
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Public tool metadata for what this MCP can expose to an agent.
1 tools
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
amountstringAmount in raw lamports/smallest unit. e.g. 1000000000 = 1 SOL, 1000000 = 1 USDC
slippagenumberSlippage tolerance in basis points. Default 50 (0.5%). e.g. 100 = 1%
inputMintstringInput token mint address or symbol (SOL, USDC, USDT). e.g. So11111111111111111111111111111111111111112 or SOL
outputMintstringOutput token mint address or symbol (SOL, USDC, USDT). e.g. EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v or USDC
Jupiter Solana Swap Quote API
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
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
jupiter_get_swap_quote | GET | /api/quote | $0.002 | Get best swap quote on Solana via Jupiter aggregator |
jupiter_get_swap_quote
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.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
inputMint | string | yes | Input token mint address or symbol (SOL, USDC, USDT). e.g. So11111111111111111111111111111111111111112 or SOL |
outputMint | string | yes | Output token mint address or symbol (SOL, USDC, USDT). e.g. EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v or USDC |
amount | string | yes | Amount in raw lamports/smallest unit. e.g. 1000000000 = 1 SOL, 1000000 = 1 USDC |
slippage | number | no | Slippage tolerance in basis points. Default 50 (0.5%). e.g. 100 = 1% |
Returns
inputToken-- input token symbol and mint addressoutputToken-- output token symbol and mint addressinAmount-- input amount in raw unitsoutAmount-- expected output amount in raw unitspriceImpact-- price impact percentage (e.g. 0.12 = 0.12%)minimumReceived-- minimum output after slippage toleranceroute-- array of DEX hops used (e.g. Raydium -> Orca)priorityFee-- recommended priority fee in lamports
Example response:
{"inputToken":{"symbol":"SOL","mint":"So111..."},"outputToken":{"symbol":"USDC","mint":"EPjF..."},"inAmount":"1000000000","outAmount":"67450000","priceImpact":0.05,"minimumReceived":"67112750","route":["Raydium V4"],"priorityFee":5000}
When to use: executing any Solana token swap. Essential for getting the best price, understanding slippage, and choosing the optimal route.
Example agent prompts
- "A swap quote on Solana"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
Featured
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Give your AI agent a complete email layer—sending, inbound inboxes, and sandbox testing.
Get 4K emails/month free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
