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24K Labs Crypto Address Validator
x402
24K Labs Crypto Address Validator is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Validates and checksums EVM (EIP-55), Bitcoin (base58check and bech32), and Solana addresses, detecting chain type and flagging checksum errors before a transfer.
Price / call$0.003
Success—
StatusUnknown
How this service works
Validate and checksum EVM (EIP-55), Bitcoin (base58check and bech32) and Solana addresses. Detects the chain and flags checksum errors before a transfer.
Output
Returns whether the address is valid, the detected blockchain/chain type (EVM, Bitcoin base58check, Bitcoin bech32, or Solana), EIP-55 checksum status for EVM addresses, and any detected formatting or checksum errors.
Example use cases
Pre-transfer wallet address check
“I'm about to send 2 ETH to 0x71C7656EC7ab88b098defB751B7401B5f6d8976F — can you validate that address and confirm the checksum is correct before I proceed?”
Bitcoin address format verification
“Can you verify whether bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq is a valid bech32 Bitcoin address and tell me if there are any errors?”
Detect chain from unknown address
“Someone gave me the address 7EcDhSYGxXyscszYEp35KHN8vvw3svAuLKTzXwCFLtV — can you figure out which blockchain it belongs to and confirm it's properly formatted?”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/crypto-address-validateWhen to prefer
Choose this endpoint when you need pre-transfer address validation across multiple chains (EVM, Bitcoin, Solana) in a single call, especially when EIP-55 checksum enforcement matters. Ideal for wallets, payment flows, or agent pipelines that handle multi-chain addresses and need to catch typos or checksum errors before funds are sent.
Side effects
- Invalid or malformed address string returns a validation failure with error details
- Ambiguous address that doesn't match any supported chain format returns an unrecognized chain error
- Empty or null address input returns a bad request error
- Network or service timeout returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "evm",
"valid": true,
"checksum_valid": true
}
}Tags
x402
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