Private key to address + public key API

Derive the EVM address and uncompressed secp256k1 public key from a 32-byte private key (via viem); the raw key is masked in the response and never logged. Answers 'What address owns this private key?','What is the public key for this key?'.

Price$0.01per request

MethodPOST

Route/v1/evm/private-to-address

StatusLive

MIME typeapplication/json

Rate limit60/minute

CacheNo cache

evmprivatekeypublickeysecp256k1addressderivecrypto

API URLhttps://x402.hexl.dev/v1/evm/private-to-address

Integration docs

Example request

{
  "privateKey": "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
}

Example response

{
  "privateKey": "0xac09…ff80",
  "address": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
  "publicKey": "0x048318535b54105d4a7aae60c08fc45f9687181b4fdfc625bd1a753fa7397fed753547f11ca8696646f2f3acb08e31016afac23e630c5d11f59f61fef57b0d2aa5"
}

Input schema

{
  "type": "object",
  "required": [
    "privateKey"
  ],
  "properties": {
    "privateKey": {
      "type": "string",
      "examples": [
        "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
      ]
    }
  },
  "examples": [
    {
      "privateKey": "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
    }
  ]
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}