# EVM Address Labels

> EVM Address Labels is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).

Identifies an EVM address by resolving its protocol/entity identity, on-chain type, ENS/Basename, sanctions status, and scam flags in a single call

## Facts

- Endpoint: GET https://api.agentstools.dev/address/labels?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-address-labels-8bd3885a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OAJxXtzsdE56kOAe22Mfg

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability evm-address-labels-8bd3885a
```

Example prompt: Can you tell me what this Ethereum address is — 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 — is it a contract, which protocol does it belong to, and is it on any sanctions lists?

## When to prefer this

Use this endpoint when you need a comprehensive, single-call identity resolution for an EVM address — combining protocol/entity labeling from Open Labels Initiative attestations, on-chain contract detection, ENS/Basename resolution, and multi-jurisdiction sanctions + scam screening. Prefer it over chain-specific block explorers when you need multi-network support and compliance screening in one call, or over standalone ENS resolvers when you also need entity categorization and sanctions checking.

## Known failure modes

- Invalid address format (not 0x + 40 hex) results in an error response
- Unsupported network enum value returns an error
- Unknown or unlabeled address returns empty label fields (not a 404)
- Network connectivity or upstream attestation service outage may delay or fail the response
- Payment failure (x402) if USDC balance is insufficient for the $0.02 fee

## How this service works

Identify what an EVM address IS in one keyless call: contract/protocol identity (entity, name, category) from Open Labels Initiative attestations with trusted-attester consensus, plus on-chain truth (is_contract, code_hash), reverse ENS/Basename, sanctions (OFAC/UK/EU/UN) and scam-drainer flags. Cited provenance; unknown addresses answer with empty labels, never a 404.

## Output

Returns a structured label object for the queried address including: entity name and category from Open Labels Initiative attestations with attester consensus, on-chain flags (is_contract, code_hash), reverse ENS or Basename resolution, sanctions status across OFAC/UK/EU/UN lists, scam/drainer flags, and cited provenance. Unknown addresses return empty labels rather than an error.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "Address to label, 0x + 40 hex"
      },
      "network": {
       "enum": [
        "base",
        "ethereum",
        "arbitrum",
        "optimism",
        "polygon",
        "bnb"
       ],
       "type": "string",
       "description": "EVM network (default base)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-address-labels-8bd3885a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)