# Saylor Innovations Data Desk - Crypto Address Validator

> Saylor Innovations Data Desk - Crypto Address Validator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Validates a cryptocurrency address offline by checking format and checksum, detecting the network, for EVM, Bitcoin, Litecoin, Tron, XRP, Solana, TON, Sui, Cosmos, and Cardano.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/crypto/address-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-data-desk-crypto-address-validator-05f976f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BeAGUudEiKYgUhYmtKUpz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability saylor-innovations-data-desk-crypto-address-validator-05f976f2
```

Example prompt: Can you check if this crypto address is valid and tell me which blockchain it belongs to: 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B?

## When to prefer this

Use this endpoint when you need fast, offline, multi-chain crypto address validation without making on-chain RPC calls. It is ideal for pre-flight checks before sending payments, sanitizing user-submitted wallet addresses, or determining which blockchain network an address belongs to. It covers the major chains (EVM, Bitcoin, Litecoin, Tron, XRP, Solana, TON, Sui, Cosmos, Cardano) in a single call, making it preferable over chain-specific validators when the network is unknown.

## Known failure modes

- Missing required 'address' query parameter returns an error
- Completely unrecognizable string format returns valid=false with no matches
- Partial or truncated addresses may return valid=false even for real networks
- Mixed-case EVM addresses with wrong checksum return checksum_failure=true
- Non-standard or newer blockchain address formats not in the supported list return no match

## How this service works

Validate a crypto address offline: format and checksum for EVM EIP-55, Bitcoin, Litecoin, Tron, XRP, Solana, TON, Sui, Cosmos and Cardano, with network detection.

## Output

A JSON object containing the original address, a boolean valid flag, a boolean checksum_failure flag, a verdict string summarizing the assessment, an array of matching blockchain networks, a short summary string, a note with caveats or context, and a source field indicating data provenance. All validation is performed offline without network calls.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "the address to validate, any supported format (EVM 0x, Bitcoin/Litecoin/Dogecoin base58 or bech32, Tron T..., XRP r..., Solana base58, TON, Sui/Aptos 0x+64 hex, Cosmos bech32, Cardano addr1)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "address",
      "valid",
      "checksum_failure",
      "verdict",
      "matches",
      "summary",
      "note",
      "source"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "valid": {
       "type": "boolean",
       "description": "True when the input passed validation"
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      },
      "address": {
       "type": "string",
       "description": "Account or contract address"
      },
      "matches": {
       "type": "array",
       "description": "Matching items"
      },
      "summary": {
       "type": "string",
       "description": "Short summary"
      },
      "verdict": {
       "type": "string",
       "description": "Overall assessment derived from the listed reasons"
      },
      "checksum_failure": {
       "type": "boolean",
       "description": "Checksum failure"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-data-desk-crypto-address-validator-05f976f2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)