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Agent402 UK Crypto Address Validator
x402
Agent402 UK Crypto Address Validator is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Validates cryptocurrency wallet addresses for ETH (EIP-55 checksum), Solana (base58-32), and Bitcoin (Base58Check, bech32, bech32m) formats with automatic or explicit chain detection.
Price / call$0.001
Success—
StatusDown
How this service works
Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.
Output
Returns a JSON object containing the detected or specified chain name, a boolean valid field indicating whether the address is correctly formatted, and (for Ethereum addresses) the EIP-55 checksummed version of the address.
Example use cases
Pre-flight DeFi transaction check
“Before I send any funds, check if this address is a valid Ethereum wallet: 0xAbCdEf1234567890AbCdEf1234567890AbCdEf12 — auto-detect the chain.”
Bitcoin withdrawal address verification
“I need to verify that bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq is a valid Bitcoin address before we process the withdrawal.”
Multi-chain address routing in agent pipeline
“We're building a payment router — can you check whether FwR3PbjS5LabJptzT9tEMEpHyJqbBzFhLPLtbGepMgQa is a valid Solana address or should I try a different chain?”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/validate/crypto-addressWhen to prefer
Choose this endpoint when your agent needs authoritative, multi-format address validation covering ETH (EIP-55 checksum), Solana (base58-32), and Bitcoin (Base58Check + bech32/bech32m) in a single call with auto-detection. It is ideal for pre-transaction guard rails in DeFi workflows, payment routing pipelines, or any multi-chain agent that must reject malformed addresses before committing funds. Prefer it over hand-rolled regex checks or single-chain validators when you need correctness guarantees across all three major chains at negligible cost ($0.001/call).
Side effects
- Address is malformed or contains invalid characters — returns valid: false
- Unsupported chain specified — may return an error or valid: false
- Bech32m vs bech32 mismatch for Bitcoin segwit addresses — flagged as invalid
- Empty or null address field — likely returns validation error
- Chain mismatch when chain is explicitly set but address format belongs to a different chain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | auto|eth|sol|btc |
| address | string | Address string |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "eth",
"valid": true,
"checksummed": "0x9EF9…"
}
}Tags
x402
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