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Delx Commerce — EVM Hex Quantity Normalize
x402
Delx Commerce — EVM Hex Quantity Normalize is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Normalizes a numeric quantity to both decimal and EVM-compatible hex (0x-prefixed) format for use in Ethereum transaction preflighting
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing the normalized decimal string, the 0x-prefixed hex quantity, operation status ('pass'), the operation name, and a verifiable evidence block including whether input was retained (always false), the SHA256 hash of the input, and the number of external calls made (always 0).
Example use cases
Smart contract call data prep
“I'm building a transaction to transfer 255 tokens on Ethereum — can you convert that quantity to the correct 0x-prefixed hex format I need for the call data?”
DeFi transaction preflight check
“Before I send this EVM transaction, normalize the quantity '1000000' to hex for me so I can confirm the encoded value matches what my smart contract expects.”
Debugging hex encoding mismatch
“I'm getting a mismatch between my decimal amount and what's showing up in the EVM call — can you normalize the quantity '42' to hex so I can verify the correct 0x encoding?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/evm-hex-quantity-normalize?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a verifiable, pay-per-result hex normalization with cryptographic evidence of processing (input SHA256, no retention guarantee) — ideal for agents that need auditability in EVM transaction preflighting without setting up infrastructure or managing keys.
Side effects
- Invalid or non-numeric quantity string returns an error
- Quantity exceeding maxLength of 8192 characters rejected
- Malformed request body returns 400-level error
- Payment not received or invalid USDC payment results in 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| quantity | string | Quantity supplied to EVM Hex Quantity Normalize; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"decimal": "10",
"hex_quantity": "0xa"
},
"schema": "delx/util-evm-hex-quantity-normalize/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "e715e2d41dde2bc72a6903549169204d8a7eafa7a87caa81118d29f63959a203",
"external_calls": 0
},
"operation": "evm_preflight:evm_hex_quantity_normalize"
}
}Tags
x402
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