# Jupiter Swap Quote API (Klymax)

> Jupiter Swap Quote API (Klymax) is a paid API for AI agents from jupiter-quotes.api.klymax402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Returns the best swap quote for a given token pair on Solana using the Jupiter aggregator

## Facts

- Endpoint: GET https://jupiter-quotes.api.klymax402.com/api/quote
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/jupiter-swap-quote-api-klymax-35f344ef
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VDAF0tQAm6g41czF1TPoI

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability jupiter-swap-quote-api-klymax-35f344ef
```

Example prompt: What's the best swap quote I can get for swapping 1 SOL (1000000000 lamports) to USDC on Solana right now, with a 0.5% slippage tolerance?

## When to prefer this

Use this endpoint when you need to get the best available swap quote on the Solana blockchain via Jupiter aggregation, especially when you want routing across multiple DEXes for optimal price discovery. Prefer this over single-DEX price checks when you want the best aggregated rate.

## Known failure modes

- Invalid or unsupported token mint address returns an error
- Amount not provided or in wrong format causes a 400 error
- Extremely low liquidity pairs may return no viable routes
- Network congestion or Jupiter API downtime causes timeout or 503
- Invalid slippage value causes parameter rejection

## How this service works

Get best swap quote on Solana via Jupiter aggregator (POST variant)

## Output

Returns the best available swap quote for the specified token pair on Solana, including the expected output amount, route details, price impact, and other swap metadata sourced from Jupiter's DEX aggregator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "inputMint",
      "outputMint",
      "amount"
     ],
     "properties": {
      "amount": {
       "type": "string",
       "description": "Amount in raw lamports/smallest unit. e.g. 1000000000 = 1 SOL, 1000000 = 1 USDC"
      },
      "slippage": {
       "type": "number",
       "description": "Slippage tolerance in basis points. Default 50 (0.5%). e.g. 100 = 1%"
      },
      "inputMint": {
       "type": "string",
       "description": "Input token mint address or symbol (SOL, USDC, USDT). e.g. So11111111111111111111111111111111111111112 or SOL"
      },
      "outputMint": {
       "type": "string",
       "description": "Output token mint address or symbol (SOL, USDC, USDT). e.g. EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v or USDC"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/jupiter-swap-quote-api-klymax-35f344ef/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from jupiter-quotes.api.klymax402.com](https://www.zero.xyz/host/jupiter-quotes.api.klymax402.com/llms.txt)