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gate402 Best Swap Execution Planner
x402
gate402 Best Swap Execution Planner is a paid API for AI agents from gate402.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns best-execution intelligence for a Base token trade: ranks DEX pools by estimated price impact and total cost for a given USD trade size, with a split suggestion.
Price / call$0.02
Success—
StatusUnknown
How this service works
Best-execution intel for a Base token: which DEX pool to trade on and the estimated price impact + total cost for a given trade size, ranked across pools, with a split suggestion. Constant-product estimate for trading agents — the execution plan, not a firm quote.
Output
A ranked list of DEX pools available for the specified Base token, each with estimated price impact and total cost for the given USD trade size, plus a suggested split-trade strategy to minimize market impact. Based on constant-product (AMM) math — an indicative execution plan, not a firm quote.
Example use cases
Minimize slippage on large token buy
“I want to buy $10,000 worth of the Base token at 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 — which DEX pool will give me the least price impact and is there a split trade recommendation?”
Compare DEX pools before executing a swap
“Before I swap into this Base token at address 0x4ed4e862860bed51a9570b96d89af5e1b0efefed, can you rank the available DEX pools for a $500 trade size and tell me the estimated total cost on each?”
Automated agent pre-trade routing check
“I'm about to execute a $2000 trade on this Base token 0x0578d8a44db98b23bf096a382e016e29a5ce0ffe — check the best pool to route through and give me the price impact estimate so I can decide if it's worth it.”
Technical details
Endpoint
POSThttps://gate402.app/v1/best-swapWhen to prefer
Use this endpoint when an agent needs to plan a token swap on Base and wants to minimize slippage or total cost — especially for larger trade sizes where pool depth and price impact matter. Prefer this over a simple price lookup when you need routing intelligence, split-trade suggestions, or a ranked comparison across multiple DEX pools before committing to execution.
Side effects
- Invalid or non-ERC-20 contract address returns an error or empty pool list
- Token with no active liquidity pools returns no results
- Very large trade size relative to pool liquidity may produce extreme price impact estimates
- Network latency or DEX data feed issues may cause stale or unavailable pool data
- Non-Base-chain addresses will not return valid results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | Base ERC-20 token contract address (0x-hex). |
| sizeUsd | number | Trade size in USD (default 1000). |
Tags
x402
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