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x402 Slippage Recommendation API
x402
x402 Slippage Recommendation API is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns a recommended maximum slippage tolerance for a planned token swap, based on live price impact analysis plus a safety buffer, with a quality rating.
Price / call$0.005
Success—
StatusUnknown
How this service works
Recommended max slippage for a planned swap based on live price impact plus a buffer, with a rating. Send { chain, tokenIn, tokenOut, amountIn }. Avoid failed txns and overpaying on slippage.
Output
Returns a recommended maximum slippage percentage for the planned swap, derived from live price impact calculation plus a safety buffer, along with a rating (e.g. low/medium/high risk) to help the agent decide whether to proceed and what slippage cap to pass to the DEX router.
Example use cases
Example prompt
“Before I swap 5000000000 units of 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 for 0x4200000000000000000000000000000000000006 on Base, what max slippage should I set to avoid a failed transaction or overpaying?”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/exec/slippageWhen to prefer
Use this endpoint when an agent is about to execute a token swap and needs to determine a safe slippage tolerance dynamically rather than using a hardcoded value. It is especially valuable for large trades, illiquid pairs, or volatile market conditions where a static 0.5% or 1% slippage setting would cause frequent failures or MEV losses.
Side effects
- Unsupported chain returns an error or defaults to Base
- Invalid or unrecognized token addresses return a lookup failure
- Very illiquid token pairs may return high uncertainty or no result
- amountIn of zero or malformed amount returns a validation error
- Network or oracle unavailability causes a timeout or 503 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Chain, default base |
| tokenInrequired | string | 0x token to sell |
| amountInrequired | string | Amount in smallest units |
| tokenOutrequired | string | 0x token to buy |
Tags
x402
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