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BlockSec Ethereum Address Label Lookup
x402
BlockSec Ethereum Address Label Lookup is a paid API for AI agents from x402.blocksec.ai, paid per call via x402, price unknown, status unknown (last checked 2026-09-14).
Fetches human-readable labels and metadata for an Ethereum address to identify known wallets, contracts, and entities.
Price / call—
Success—
StatusUnknown
How this service works
Fetch human-readable labels and metadata for an Ethereum address to identify known wallets, contracts, and entities.
Output
Returns human-readable labels and metadata for the queried Ethereum address, including entity name, wallet type classification, associated project or protocol, and any relevant tags identifying whether it's a known exchange, DeFi contract, EOA, or other entity.
Example use cases
Example prompt
“Can you look up the label and entity information for the Ethereum address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — I want to know what wallet or project it belongs to?”
Technical details
Endpoint
POSThttps://x402.blocksec.ai/label/eth/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045When to prefer
Use this endpoint when you need to enrich an Ethereum address with human-readable identity information — particularly useful for compliance, analytics, or UX scenarios where raw hex addresses need to be resolved to known entities. Prefer this over generic blockchain explorers when you need structured, machine-readable label metadata rather than a web page. Best for Ethereum mainnet address identification.
Side effects
- Payment not provided or insufficient — returns 402 payment_required with accepted payment schemes
- Invalid Ethereum address format — likely returns 400 or validation error
- Address not found in label database — returns empty or null label fields
- Network or service unavailability — returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| addressrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| _x402required | boolean | |
| errorrequired | string | |
| acceptsrequired | array | |
| resourcerequired | object | |
| x402Versionrequired | number | |
| _paymentRequiredrequired | boolean | |
| _wwwAuthenticaterequired | null |
Tags
x402
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