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HostDeFi EVM Swap Price Quote
x402
HostDeFi EVM Swap Price Quote is a paid API for AI agents from hostdefi.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Returns a best-route price quote for swapping one EVM token for another across 7 supported chains, without executing the swap.
Price / call$0.002
Success—
StatusUnknown
How this service works
HostDeFi is a non-custodial Solana DEX. Best-route swaps through Jupiter, EVM trading across 7 chains, native bridging, and live token risk grades. No KYC, no accounts, no custody.
Output
Returns a JSON object with ok status, the estimated buyAmount (in the buy token's base units), minBuyAmount (accounting for slippage), nativeUsd (USD value if available), and an estimate flag indicating this is a price preview rather than an executed transaction.
Example use cases
Pre-trade swap cost estimation
“Before I execute anything, tell me how much WBTC I'd receive if I sell 2 ETH (native) on Arbitrum — chain ID 42161 — buying WBTC at 0x2f2a2543B76A4166549F7aaB2e75Bef0aefC5B0f. Just give me the quote, don't do the swap.”
Cross-chain arbitrage price check
“Check the swap price on Polygon (chain ID 137) for selling 10,000 USDC (0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174) to get MATIC (native) — I want to compare it to what I'm seeing elsewhere before I decide where to trade.”
DeFi agent portfolio rebalancing preview
“I want to rebalance my portfolio — give me a price estimate for swapping 0.5 ETH (native) into USDC (0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48) on Base (chain ID 8453) so I can see the expected output before committing.”
Technical details
Endpoint
GEThttps://hostdefi.com/api/v1/x402/swap/evm/priceWhen to prefer
Use this endpoint when you need a non-binding EVM swap price quote across any of the 7 supported chains before committing to a trade. Prefer it over on-chain RPC calls when you want aggregated best-route pricing without managing wallet connections, over Solana-specific endpoints when trading EVM assets, and when you need a quick price check with no KYC or account requirements. Ideal for pre-trade analysis, arbitrage comparison, and portfolio rebalancing previews.
Side effects
- Unsupported chainId returns an error or empty response
- Invalid token contract address (non-0x or wrong format) causes a bad request
- sellAmount of zero or non-integer string may fail validation
- Token pair with no available liquidity route returns no quote
- Network congestion may cause stale or unavailable pricing data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"meta": {
"plan": "x402"
},
"estimate": true,
"buyAmount": "…",
"nativeUsd": null,
"minBuyAmount": "…"
}
}Tags
x402
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