Why Delta

Delta is Velora’s intent protocol: gasless, MEV-protected, Crosschain swaps that settle in one signature. Here’s what makes it different from a regular swap.

Delta is Velora’s intent protocol. Instead of building, signing, and submitting an on-chain transaction yourself, you sign an off-chain order describing what you want. A competitive network of solvers (the Portikus Network) submits fill calldata, and Delta settles the winning fill for you.

What you get

Gasless

The user never pays gas. Execution cost is handled inside the Delta settlement flow.

MEV-protected

Orders are filled via sealed-bid auction. No public mempool. No sandwich risk.

Crosschain native

One signed order can resolve across chains via bridge-aware solvers. No second tx.

See it work

The full lifecycle is four calls (quote, build, sign, submit), then you poll for status:

# 1. Get a Delta quote (returns a delta block: route + alternatives + spender)
curl "https://api.velora.xyz/v2/quote?...&mode=DELTA&partner=my-app-name"

# 2. Build the order from the route (returns toSign + orderHash)
curl -X POST "https://api.velora.xyz/v2/delta/orders/build" -d @build.json

# 3. Sign the returned toSign with the user's wallet (ERC-2098 compact)

# 4. Submit the signed order
curl -X POST "https://api.velora.xyz/v2/delta/orders" -d @signed.json

# 5. Poll status
curl "https://api.velora.xyz/v2/delta/orders/{orderId}"

Walk through the full flow in the Quickstart →

For a side-by-side breakdown of when to pick mode=DELTA, mode=MARKET, or mode=ALL, see Trading modes.

Next steps

Quickstart

cURL the full lifecycle end-to-end.

How it works

Order server, solver auction, settlement.

Crosschain Delta

One signature, multi-chain settlement.