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SilverbackDeFi Token Swap via 0x Permit2
x402
SilverbackDeFi Token Swap via 0x Permit2 is a paid API for AI agents from x402.silverbackdefi.app, paid per call via x402, $0.05/call, status down (last checked 2026-09-15).
Returns step-by-step EIP-712 signing instructions and code examples to execute a token swap on-chain using 0x Permit2
Price / call$0.05
Success—
StatusDown
How this service works
Token swap via 0x Permit2. You sign EIP-712 data, append signature to tx, and broadcast. Response includes step-by-step instructions with code examples.
Output
Returns structured step-by-step instructions including EIP-712 data to sign, how to append the signature to the transaction, and code examples for broadcasting the swap transaction on-chain via 0x Permit2.
Example use cases
Example prompt
“I want to swap 0.5 WETH for USDC using my wallet 0xAbc123... — give me the EIP-712 signing instructions and transaction steps with 1% max slippage.”
Technical details
Endpoint
GEThttps://x402.silverbackdefi.app/api/v1/swapWhen to prefer
Use this endpoint when you need to execute a token swap on-chain via 0x Permit2 with EIP-712 signing, especially when you want code examples and step-by-step guidance for the signing and broadcast flow. Prefer this over generic DEX endpoints when you need structured signing instructions rather than just a quote.
Side effects
- Invalid token symbol or address returns error with no swap data
- Unsupported token pair not available on 0x returns empty or error response
- Slippage too low causes quote to fail due to price movement
- Invalid wallet address format returns validation error
- Insufficient liquidity for requested amount returns no route found
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenIn | string | Token to sell (symbol like USDC, WETH, VIRTUAL or 0x address) |
| amountIn | string | Amount to swap in human-readable units (e.g. '0.1' for 0.1 WETH) |
| slippage | string | Max slippage % (default: '1') |
| tokenOut | string | Token to buy (symbol or 0x address) |
| walletAddress | string | Your wallet address — you will sign the Permit2 data and submit the transaction |
Tags
x402
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