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Crypto Unit Converter (ETH ↔ Wei)
x402
Crypto Unit Converter (ETH ↔ Wei) is a paid API for AI agents from api.api-agent-ia.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-23).
Converts cryptocurrency values between units (e.g. ETH to wei, gwei to ETH) given a source unit, target unit, and numeric value
Price / call$0.001
Success—
StatusUnknown
How this service works
Need to convert ETH, gwei or wei without floating-point errors? Converts an amount between these units with exact decimal math, up to 28 significant digits ($0.001 per call).
Output
A JSON object containing the input value, the source unit, the target unit, and the converted output value as a string (e.g. {valeur_entree: '1', unite_source: 'eth', unite_cible: 'wei', valeur_sortie: '1000000000000000000'})
Example use cases
ETH to wei for smart contract call
“I need to pass a value in wei to a smart contract — convert 0.1 ETH to wei for me.”
Gas price unit conversion for display
“The gas price is 25 gwei, what is that in ETH so I can show it in a human-readable format?”
Normalize user input for transaction
“A user entered 500000000000000000 wei — can you convert that to ETH so I can display it properly?”
Technical details
Endpoint
GEThttps://api.api-agent-ia.ch/convertir-unites?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need precise, server-side conversion between Ethereum denomination units (ETH, gwei, wei) without implementing the math locally. Particularly useful in agents handling smart contract interactions, gas calculations, or displaying blockchain values to users in a preferred denomination.
Side effects
- Missing required query parameters (valeur, unite_source, or unite_cible) returns an error
- Unsupported unit names result in an error response
- Non-numeric value in valeur field causes a parse error
- Payment not included triggers a 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"unite_cible": "gwei",
"unite_source": "eth",
"valeur_entree": "1.5",
"valeur_sortie": "1500000000.0"
}
}Tags
x402
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