v0.1 beta — by invitation

Cross-chain swaps
as a single API.

One endpoint. Multiple aggregated routes. Best amount-out guaranteed. Built for dApps, wallets, and aggregators that want cross-chain liquidity without managing vendor sprawl.

Read the docs Get an API key

Aggregated routes

We query every supported route in parallel and surface the best amount-out — so your users always get the deepest liquidity path.

Vendor-neutral

One stable API. We absorb upstream changes — pricing, schema, deprecations — so your integration never needs a rewrite.

Deposit-address mode

No wallet SDK required. We mint a one-time deposit address; your user just sends funds. Funds-arrival triggers the swap.

Swap across 30+ chains

Ethereum

Bitcoin

Solana

BNB Chain

Tron

TON

Arbitrum

Base

Polygon

Optimism

Avalanche

NEAR

One curl. Five minutes.

Quote a USDT-on-Ethereum → USDT-on-Tron swap. No SDK, no wallet, no on-chain transactions until your user actually wants to swap.

curl -X POST https://api.allswap.io/v1/quote \
  -H "X-Key-Id: ak_live_yourapp" \
  -H "Authorization: Bearer <secret>" \
  -H "Content-Type: application/json" \
  -d '{
    "from":  "eip155:1/erc20:0xdac17f958d2ee523a2206206994597c13d831ec7",
    "to":    "tron:mainnet/trc20:TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
    "amount": "1000000000",
    "sender": "0xYourUserEvmAddress",
    "recipient": "TYourUserTronAddress"
  }'

Read the 5-step quickstart →

Start integrating today.

We respond within 1–2 business days. No upfront fees. Free tier covers 50,000 quotes/month.