# address-labels

> address-labels is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Identify and label an EVM address with contract/protocol identity, sanctions status, scam flags, reverse ENS/Basename, and on-chain metadata in a single call

## Facts

- Endpoint: GET https://payai.agentstools.dev/address/labels?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/address-labels-9cc32246
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TAV73ICXNjrEzAbDTjSGM

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 address-labels-9cc32246
```

Example prompt: What is 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D on Ethereum — is it a known protocol contract, and is it flagged for sanctions or scams?

## When to prefer this

Use this endpoint when you need a comprehensive, fused identity profile for any EVM address in one call — combining protocol identity, sanctions screening, scam detection, ENS resolution, and on-chain metadata. Prefer it over separate lookups when you need trusted-attester consensus from Open Labels Initiative combined with real-time sanctions and fraud flags. Ideal for compliance checks, wallet profiling, dApp interactions, or any workflow where you need to know exactly what an address is before interacting with it.

## Known failure modes

- Invalid address format (not 0x + 40 hex) returns validation error
- Unsupported network enum value returns error
- Unknown or unrecognized address returns empty labels (not 404)
- Payment failure (x402) if USDC balance insufficient
- Network timeout if on-chain RPC is slow
- Rate limiting if too many requests in quick succession

## 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 EVM address including: entity name and category from Open Labels Initiative consensus, is_contract and code_hash from on-chain data, reverse ENS or Basename for EOAs, OFAC/UK/EU/UN sanctions flags, scam/drainer flags, estimated address age, funder heuristics, and cited provenance with confidence scores. 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/address-labels-9cc32246/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payai.agentstools.dev](https://www.zero.xyz/host/payai.agentstools.dev/llms.txt)