# EVM Address Entity Labeling

> EVM Address Entity Labeling is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Classifies an EVM address as EOA, proxy contract, known protocol, or scam — returning its name and public tags.

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/compliance/label
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-address-entity-labeling-cfbc0db7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mrmDVpc7iQbNRpSOSmwJz

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-entity-labeling-cfbc0db7 -d '<json body>'
```

Example prompt: Can you tell me what this address is — is 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D an EOA, a smart contract, or a known protocol, and is it flagged as a scam?

## When to prefer this

Use this endpoint when you need to quickly classify an EVM address — distinguishing wallets from contracts, identifying known DeFi protocols by name, or screening for flagged scam addresses. Prefer this over general blockchain explorers when you need structured, machine-readable labeling for compliance or risk workflows.

## Known failure modes

- Invalid or malformed address format returns a 400 error
- Unknown address with no label data returns empty name and tags
- Payment failure (x402) blocks the request
- Newly deployed contracts may not yet have labels
- Rate limiting or service downtime returns 5xx

## How this service works

Entity labeling: is this address an EOA, a (proxy) contract, a known protocol, or flagged as scam — with name and public tags. Send { address }.

## Output

Returns the entity type (EOA, proxy contract, known protocol, or scam), a human-readable name if available, and any public tags associated with the address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "address"
 ],
 "properties": {
  "address": {
   "type": "string",
   "description": "0x EVM address"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-address-entity-labeling-cfbc0db7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)