Onvexia Blockchain Address Labels

x402

Onvexia Blockchain Address Labels is a paid API for AI agents from onvexia.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-19).

Returns labels and identity metadata for a given blockchain address, drawing on Onvexia's curated database of labelled addresses across multiple chains.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.

Output

A JSON response containing an array of label objects for the queried address, including entity name, classification type, and associated chain metadata, plus a meta object pointing to full API documentation.

Example use cases

Exchange deposit address verification

“I received funds from 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe — can you check Onvexia to see if that address is labelled as a known exchange or custodian?”

DeFi protocol contract identification

“What does Onvexia say about the address 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D — is it linked to a DeFi protocol like Uniswap?”

Compliance due-diligence on counterparty

“I need to do a quick compliance check — look up the label for 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf Na and tell me if Onvexia has it classified as a sanctioned entity, miner, or anything else.”

Technical details

Endpoint

GEThttps://onvexia.com/v1/labels/%7Baddress%7D

When to prefer

Choose this endpoint when you need to resolve a raw blockchain address to a human-readable label or known entity (exchange, protocol, contract, miner, etc.) and require coverage across multiple chains with data reaching back to 2008. Prefer it over generic block explorers when you need structured, machine-readable label data suitable for compliance, analytics pipelines, or agent workflows via REST, SQL, GraphQL, or MCP.

Side effects

Address not found in database — returns empty data array
Malformed address format — returns 400 or empty result
Payment not completed — returns 402 Payment Required
Unsupported chain address format — no labels returned
Rate limiting or authentication failure — returns 4xx error

Input

Schema · Request body

Field	Type	Description
properties	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "data": [],
    "meta": {
      "docs": "https://onvexia.com/openapi.json",
      "endpoint": "/v1/labels/{address}"
    }
  }
}

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