Estimate vanity address mining cost API

Estimate the work to mine a vanity address with a given hex prefix/suffix: per-attempt probability (1/16 per nibble, x1/2 per case-sensitive letter), expected & median attempts, and wall-clock time at a hash rate. Answers 'How long to find an address starting 0xdead?','How many tries for this vanity prefix?'.

Price$0.01per request

MethodPOST

Route/v1/evm/vanity-estimate

StatusLive

MIME typeapplication/json

Rate limit60/minute

CacheNo cache

evmvanityaddressestimateprobabilityminingprefix

API URLhttps://x402.hexl.dev/v1/evm/vanity-estimate

Integration docs

Example request

{
  "prefix": "0xdead"
}

Example response

{
  "prefix": "dead",
  "suffix": "",
  "matchedNibbles": 4,
  "caseSensitive": false,
  "probabilityPerAttempt": 0.0000152587890625,
  "expectedAttempts": 65536,
  "fiftyPercentAttempts": 45427,
  "hashRate": 50000,
  "expectedSeconds": 1.31072,
  "expectedHuman": "1s"
}

Input schema

{
  "type": "object",
  "required": [],
  "properties": {
    "prefix": {
      "type": "string",
      "description": "Hex chars the address should start with.",
      "examples": [
        "dead",
        "0x1234"
      ]
    },
    "suffix": {
      "type": "string",
      "description": "Hex chars the address should end with.",
      "examples": [
        "beef"
      ]
    },
    "caseSensitive": {
      "type": "boolean",
      "default": false
    },
    "hashRate": {
      "type": "number",
      "minimum": 1,
      "default": 50000,
      "description": "Addresses tried per second."
    }
  },
  "examples": [
    {
      "prefix": "0xdead"
    }
  ]
}

Output schema

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