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Otto AI DeFi Token Swap
x402
Otto AI DeFi Token Swap is a paid API for AI agents from x402.ottoai.services, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Executes an on-chain token swap via DeFi protocols, returning the transaction hash, output token, and amount received
Price / call$0.01
Success—
StatusUnknown
How this service works
Execute instant same-chain ERC-20 swaps via Odos DEX aggregator. Supports Base, Ethereum, Polygon, BSC, Arbitrum, Avalanche, and Solana. Best-route execution across dozens of DEXes and liquidity sources.
Output
A JSON object with success status (true/false), the output token symbol (e.g. WETH), the output amount received (e.g. 0.00335), the on-chain transaction hash (0x...), and a block explorer URL (e.g. basescan.org link) to verify the trade.
Example use cases
Rebalance portfolio across DeFi protocols
“I need to move 50 USDC into WETH right now on Base to rebalance my portfolio—execute the swap and give me the transaction hash so I can verify it on Basescan.”
Execute time-sensitive arbitrage opportunity
“I found an arbitrage spread between USDC and WETH on Polygon. Swap 100 USDC for WETH immediately and show me the on-chain transaction details.”
Programmatic token conversion for automation
“Set up a recurring workflow where you swap 5 USDC for SOL on Solana every hour—just execute the first swap now and give me the hash to confirm it worked.”
Technical details
Endpoint
POSThttps://x402.ottoai.services/swapWhen to prefer
Use this endpoint when an AI agent needs to programmatically execute an actual on-chain DeFi token swap (not just quote a price) and receive a verifiable transaction hash. Prefer this over CEX APIs when self-custody and on-chain settlement on Base, Polygon, or Solana are required. Pay-per-call at $0.01 USDC via x402 makes it suitable for automated workflows without subscription overhead.
Side effects
- Insufficient token balance — swap fails if wallet lacks input token funds
- Slippage exceeded — trade rejected if price moves beyond tolerance
- Unsupported token pair — not all token combinations may be routable
- Chain mismatch — incorrect chain specification causes routing failure
- Payment failure — x402 USDC micropayment not processed, call not executed
- Smart contract error — on-chain revert returns success:false with no txHash
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| amount | number | Amount of the FROM token to sell (human-readable, e.g. 10.5). Decimals are derived server-side — do NOT send fromDecimals/toDecimals. |
| chainId | number | Chain ID: 1 (ETH), 56 (BSC), 137 (Polygon), 8453 (Base, default), 42161 (Arbitrum), 43114 (Avalanche), 1151111081099710 (Solana) |
| toSymbol | string | TO token: a known symbol (e.g. WETH, USDC — use WETH, not native ETH) OR a 0x contract address, resolved on the given chain. Ambiguous symbols are rejected with candidates. |
| fromSymbol | string | FROM token: a known symbol (e.g. USDC, WETH) OR a 0x contract address, resolved on the given chain. Ambiguous symbols are rejected (HTTP 400) with candidate addresses — send the address to disambiguate. |
| tokenSource | string | Where to source input tokens: butler_wallet (pull all), otto_safe (Safe only), auto (default) |
| toTokenAddress | string | TO token contract address (alternative to toSymbol; RECOMMENDED). |
| deliverToButler | boolean | If true, forward swapped tokens to user's main wallet after swap (default: false, keeps in Safe) |
| fromTokenAddress | string | FROM token contract address (alternative to fromSymbol; RECOMMENDED to avoid symbol ambiguity). If both are sent and they resolve to different tokens, the request is rejected. |
| maxSlippagePercent | number | Optional override for slippage tolerance (default 5%) |
Output
Schema · Response
{
"type": "json",
"example": {
"success": true,
"explorerUrl": "https://basescan.org/tx/0x...",
"outputToken": "WETH",
"outputAmount": "0.00335",
"transactionHash": "0x..."
}
}Tags
x402
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