{"uid":"cap_-t52ZYaJp97hX6t2VHLvg","slug":"24k-labs-crypto-address-validator-c59ec45b","name":"24K Labs Crypto Address Validator","description":"Validate and checksum EVM (EIP-55), Bitcoin (base58check and bech32) and Solana addresses. Detects the chain and flags checksum errors before a transfer.","url":"https://api.24klabs.ai/api/v1/crypto-address-validate","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"address":{"type":"string"}}},"responseSchema":{"type":"json","example":{"chain":"evm","valid":true,"checksum_valid":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_YHkR0nTuLz5fS8wgscp0d","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and checksums EVM (EIP-55), Bitcoin (base58check and bech32), and Solana addresses, detecting chain type and flagging checksum errors before a transfer.","exampleAgentPrompt":"Before I send the funds, can you validate this address — 0x71C7656EC7ab88b098defB751B7401B5f6d8976F — and check if the EIP-55 checksum is correct?","exampleUseCases":[{"title":"Pre-transfer wallet address check","prompt":"I'm about to send 2 ETH to 0x71C7656EC7ab88b098defB751B7401B5f6d8976F — can you validate that address and confirm the checksum is correct before I proceed?"},{"title":"Bitcoin address format verification","prompt":"Can you verify whether bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq is a valid bech32 Bitcoin address and tell me if there are any errors?"},{"title":"Detect chain from unknown address","prompt":"Someone gave me the address 7EcDhSYGxXyscszYEp35KHN8vvw3svAuLKTzXwCFLtV — can you figure out which blockchain it belongs to and confirm it's properly formatted?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T19:02:23.648Z","isFirstParty":false}