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GET /leokit/quote

Get swap quotes from multiple protocols in a single request.

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Request Parameters

ParameterTypeRequiredDescription
from_assetstringYesSource asset in format CHAIN.SYMBOL-ADDRESS
to_assetstringYesDestination asset in format CHAIN.SYMBOL-ADDRESS
amountstringYesAmount to swap in base units (e.g., “1000000” for 1 USDC)
destinationstringYesRecipient address for the output asset
originstringNoSource address (optional, some protocols use for validation)
affiliatestringNoAffiliate address for revenue sharing
slippage_bpsnumberNoSlippage tolerance in basis points (default: 150 = 1.5%)
streaming_intervalnumberNoStreaming swap interval for THORChain/MAYA (default: 3)
streaming_quantitynumberNoNumber of streaming swap chunks (default: 1)

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Response Format

Status Code: 200 OK 
{
  "quotes": [
    {
      "protocol": "thorchain",
      "data": {
        "expected_amount_out": "1985000000",
        "total_swap_seconds": 180,
        "fees": [
          {
            "type": "Affiliate Fee",
            "asset": "BTC.BTC",
            "amount": 0.00003,
            "usd": 1.2
          },
          {
            "type": "Outbound Fee",
            "asset": "ETH.ETH",
            "amount": 0.001,
            "usd": 3.5
          },
          {
            "type": "Network Fee",
            "asset": "THOR.RUNE",
            "amount": 0.02,
            "usd": 0.08
          }
        ],
        "route": [
          "BTC.BTC",
          "THOR.RUNE",
          "ETH.USDC-0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
        ],
        "in_asset_decimal": "8",
        "out_asset_decimal": "6",
        "out_asset_price": "1.00000",
        "from_asset_price": "98500.00000",
        "recommended_slippage": 150,
        "flags": ["OPTIMAL", "CHEAPEST"]
      }
    },
    {
      "protocol": "chainflip",
      "data": {
        "expected_amount_out": "1983500000",
        "total_swap_seconds": 60,
        "fees": [
          {
            "type": "Deposit Fee",
            "asset": "BTC.BTC",
            "amount": 0.00001,
            "usd": 0.98
          },
          {
            "type": "Network Fee",
            "asset": "BTC.BTC",
            "amount": 0.000015,
            "usd": 1.47
          },
          {
            "type": "Broadcast Fee",
            "asset": "ETH.USDC",
            "amount": 2.5,
            "usd": 2.5
          }
        ],
        "route": ["BTC", "USDC"],
        "in_asset_decimal": "8",
        "out_asset_decimal": "6",
        "out_asset_price": "1.00000",
        "from_asset_price": "98500.00000",
        "flags": ["FASTEST"]
      }
    }
  ],
  "timestamp": "2026-01-15T12:34:56.789Z",
  "quote_id": "01936b4a-7c8e-7890-abcd-ef1234567890"
}

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Quote Flags

Quotes are automatically tagged with performance indicators:
  • FASTEST - Lowest total_swap_seconds
  • CHEAPEST - Lowest total fees in USD
  • OPTIMAL - Highest expected_amount_out (tie-broken by fees, then speed)

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Fee Breakdown Examples

Each quote includes a detailed fee breakdown with the following structure: 
{
  "type": "Fee Type",
  "asset": "CHAIN.SYMBOL",
  "amount": 0.001,
  "usd": 3.5
}
Common Fee Types:
  • Affiliate Fee - Revenue sharing with integrators
  • Outbound Fee - Blockchain network fee for sending output
  • Network Fee - Protocol or router fee
  • Deposit Fee - Fee for depositing into protocol
  • Broadcast Fee - Fee for broadcasting transaction to destination chain

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Error Responses

Missing Required Parameters (400) 
{
  "error": "Missing required params: from_asset, to_asset, amount",
  "status": 400
}
No Quotes Available (404) 
{
  "error": "No quotes available from any protocol",
  "status": 404
}
Internal Server Error (500) 
{
  "error": "Internal server error",
  "details": "Error message",
  "status": 500
}

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GET /leokit/streaming-quotes

Stream quotes as Server-Sent Events (SSE) for real-time updates as protocols respond.

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Request Parameters

Same as /leokit/quote endpoint.

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Response Format

Content-Type: text/event-stream Event Stream: 
data: {"type":"init","quote_id":"01936b4a-7c8e-7890-abcd-ef1234567890","timestamp":"2026-01-15T12:34:56.789Z","total":6}

data: {"type":"quote","protocol":"chainflip","data":{"expected_amount_out":"1983500000",...}}

data: {"type":"quote","protocol":"thorchain","data":{"expected_amount_out":"1985000000",...}}

data: {"type":"quote","protocol":"relay","data":{"expected_amount_out":"1980000000",...}}

data: {"type":"final","quotes":[...],"timestamp":"2026-01-15T12:34:58.123Z","quote_id":"01936b4a-7c8e-7890-abcd-ef1234567890"}

data: {"type":"finished"}

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Event Types

TypeDescription
initInitial event with quote_id and total expected protocols
quoteIndividual quote as it resolves from each protocol
finalAggregated final result with all quotes and flags
finishedStream completion signal
errorError occurred (e.g., no quotes available)

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Stream Characteristics

  • Safety Timeout: 7 seconds maximum
  • Connection: Keep-alive with heartbeat
  • Cache-Control: no-cache
  • Client Disconnect: Gracefully handled, quote still logged to database

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Error Event

data: {"type":"error","data":"No quotes available from any protocol"}