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Alchemy Swap Allowance Holder Firm Quote
x402
Alchemy Swap Allowance Holder Firm Quote is a paid API for AI agents from agent-proxy.alchemy.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Returns a firm, executable quote for a token swap using the Allowance Holder contract to manage spending allowances
Price / call$0.01
Success—
StatusUnknown
How this service works
Get the firm quote for a swap using Allowance Holder to set allowances
Output
A firm, executable swap quote including exact input/output token amounts, price, routing details, and allowance holder contract information needed to execute the swap on-chain.
Example use cases
Example prompt
“What's the firm quote to swap 1 ETH for USDC using the Allowance Holder — I need the exact committed price I'll get, not just an estimate.”
Technical details
Endpoint
GEThttps://agent-proxy.alchemy.com/v1/x402/86b0ec6d1d0b3dc0/swap-allowance-holder-quote/When to prefer
Use this endpoint when you need a committed, firm swap quote (not just an indicative price) before executing a token swap, specifically when using the Allowance Holder pattern to set spending approvals. Choose this over the indicative price endpoint when you need a guaranteed rate to present to a user before transaction signing.
Side effects
- Invalid or unsupported token pair returns error
- Insufficient liquidity for the requested swap amount
- Missing required query parameters such as token addresses or amounts
- Payment of $0.01 USDC not provided results in 402 Payment Required
- Stale quote if market moves before execution
- Network or chain ID mismatch in parameters
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"taker": "0x1234567890123456789012345678901234567890",
"chainId": 1,
"buyToken": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
"sellToken": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
"sellAmount": "1000000000000000000"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"zid": "0xa0d39c15dd9653718bf03b1c",
"fees": {
"gasFee": null,
"zeroExFee": {
"type": "volume",
"token": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"amount": "2496468"
},
"integratorFee": null,
"integratorFees": null
},
"mode": "exact-in",
"route": {
"fills": [
{
"to": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599",
"from": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"source": "Uniswap_V3",
"proportionBps": "10000"
},
{
"to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"from": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599",
"source": "Uniswap_V3",
"proportionBps": "10000"
},
{
"to": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"from": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"source": "Metric",
"proportionBps": "10000"
}
],
"tokens": [
{
"symbol": "WETH",
"address": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2"
},
{
"symbol": "WBTC",
"address": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
},
{
"symbol": "USDT",
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7"
},
{
"symbol": "USDC",
"address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"
}
]
},
"issues": {
"balance": {
"token": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"actual": "100000000000",
"expected": "1000000000000000000"
},
"allowance": {
"actual": "0",
"spender": "0x0000000000001ff3684f28c67538d4d072c22734"
},
"invalidSourcesPassed": [],
"simulationIncomplete": false
},
"buyToken": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"buyAmount": "1661813535",
"sellToken": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
"sellAmount": "1000000000000000000",
"blockNumber": "25277499",
"transaction": {
"to": "0x0000000000001ff3684f28c67538d4d072c22734",
"gas": "593802",
"data": "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",
"value": "0",
"gasPrice": "167597715"
},
"minBuyAmount": "1645170435",
"tokenMetadata": {
"buyToken": {
"buyTaxBps": "0",
"sellTaxBps": "0",
"transferTaxBps": "0"
},
"sellToken": {
"buyTaxBps": "0",
"sellTaxBps": "0",
"transferTaxBps": "0"
}
},
"allowanceTarget": "0x0000000000001ff3684f28c67538d4d072c22734",
"totalNetworkFee": "99519858362430",
"liquidityAvailable": true
}Schema · Response
| Field | Type | Description |
|---|---|---|
| zidrequired | string | |
| feesrequired | object | |
| moderequired | string | |
| routerequired | object | |
| issuesrequired | object | |
| buyTokenrequired | string | |
| buyAmountrequired | string | |
| sellTokenrequired | string | |
| sellAmountrequired | string | |
| blockNumberrequired | string | |
| transactionrequired | object | |
| minBuyAmountrequired | string | |
| tokenMetadatarequired | object | |
| allowanceTargetrequired | string | |
| totalNetworkFeerequired | string | |
| liquidityAvailablerequired | boolean |
Tags
x402
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