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The Market API is Velora’s classic swap aggregator. You request a quote, build a transaction, and your user signs and submits it on-chain, in one atomic call. It’s the right choice when you need composability inside a larger transaction, when the swap is small, or when you want full control over execution.

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What you get

Best-price routing

Aggregates liquidity across major DEXs to find the optimal path.

Atomic execution

Swap settles in a single transaction, composable with any contract call.

Multi-chain

Ethereum, Polygon, BNB, Arbitrum, Optimism, Base, Avalanche, Gnosis, Unichain.
For a side-by-side breakdown of when to pick mode=DELTA, mode=MARKET, or mode=ALL, see Trading modes.

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See it work

The basic flow is two calls (get a price, build a transaction), then your user signs and submits it: 
# 1. Get a price quote (returns a priceRoute)
curl -G 'https://api.velora.xyz/prices' \
  --data-urlencode 'srcToken=0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE' \
  --data-urlencode 'destToken=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' \
  --data-urlencode 'amount=1000000000000000000' \
  --data-urlencode 'srcDecimals=18' \
  --data-urlencode 'destDecimals=6' \
  --data-urlencode 'side=SELL' \
  --data-urlencode 'network=1' \
  --data-urlencode 'userAddress=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045' \
  --data-urlencode 'partner=my-app-name' \
  --data-urlencode 'version=6.2' \
  -o price.json

# 2. Build the transaction: wrap the priceRoute verbatim with the swap params
jq '{priceRoute,
     srcToken: .priceRoute.srcToken,
     destToken: .priceRoute.destToken,
     srcAmount: .priceRoute.srcAmount,
     slippage: 50,
     userAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
     partner: "my-app-name"}' price.json > tx.json
curl -X POST 'https://api.velora.xyz/transactions/1' \
  -H 'Content-Type: application/json' -d @tx.json

# 3. User signs and submits the transaction with their wallet

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Next steps

Quickstart

cURL the full flow end-to-end.

How it works

Price, build, approve, settle: the full Market lifecycle.

API Reference

Endpoints, parameters, and response schemas.
Last modified on June 14, 2026