10FI Swap API

The Swap API is 10FI's standard best-route product for same-chain swaps and cross-chain bridges. It optimizes price and speed across aggregated liquidity. When the winning route is a normal on-chain swap or bridge transaction, the user pays blockchain network gas from their wallet.

Do not market Swap API as universally gasless. Use Gasless API when you need sponsored execution.

Endpoints

Method	Path	Purpose
GET	/v1/quote	Compare routes; read best.source (10fi-onchain or 10fi-crosschain for Swap API wins).
POST	/v1/swap	Build execution payload. Expect type: "onchain" or type: "solana" for Swap API routes.
GET	/v1/transfer-status	Track cross-chain transfers after the source-chain tx is sent.

Typical same-chain flow

1. Quote with gasless=false if you want Swap API–only ranking, or leave default and inspect best.gasless.
2. POST /v1/swap with preferGasless: false when you intend a standard wallet transaction.
3. Send each steps[] transaction in order (approvals first), or send tx if no steps array.

curl "https://api.10fi.org/v1/quote?chain=bsc&from=USDT&to=BNB&amount=100&gasless=false" \
  -H "X-Client-Id: $TENFI_CLIENT_ID" -H "X-API-Key: $TENFI_API_KEY"

curl -X POST "https://api.10fi.org/v1/swap" -H "Content-Type: application/json" \
  -H "X-Client-Id: $TENFI_CLIENT_ID" -H "X-API-Key: $TENFI_API_KEY" \
  -d '{ "chain":"bsc", "from":"USDT", "to":"BNB", "amount":"100",
        "userAddress":"0xYourWallet", "preferGasless":false, "slippageBps":50 }'

Cross-chain / bridge routing

Cross-chain is part of Swap API. Set toChain on quote and provide toAddress for non-EVM destinations. The response includes a source-chain transaction; poll /v1/transfer-status with the tx hash.

curl "https://api.10fi.org/v1/quote?chain=bsc&toChain=solana&from=USDT&to=SOL&amount=100&userAddress=0x...&toAddress=YourSolanaAddress" \
  -H "X-Client-Id: $TENFI_CLIENT_ID" -H "X-API-Key: $TENFI_API_KEY"

Fees

• Platform: flat 0.1% (net amounts in responses).
• Network gas: paid by the user on on-chain Swap API routes.
• Bridge: bridge/provider fees reflected in the quoted output amount.

Full reference: /docs · Gasless product: /docs/gasless-api