# EVM Multi-Chain Address Activity Scanner

> EVM Multi-Chain Address Activity Scanner is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-01).

Checks a given EVM wallet address across ten EVM-compatible chains to determine which networks it has ever had activity on

## Facts

- Endpoint: POST https://twin.unykorn.org/evm-multi-chain-scan?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-multi-chain-address-activity-scanner-4010b0f7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cPsgONjiJ3JuFiKbAFgM5

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-multi-chain-address-activity-scanner-4010b0f7 -d '<json body>'
```

Example prompt: Can you check which of the ten EVM chains the address 0x1234567890abcdef1234567890abcdef12345678 has ever been active on?

## When to prefer this

Choose this endpoint when you need a quick, broad cross-chain presence check for a wallet across ten EVM networks in a single call, rather than querying each chain individually. It is ideal for due diligence, fraud detection, airdrop screening, or user profiling where you need to know which chains an address has ever interacted with, not just the current state on one chain.

## Known failure modes

- Invalid or malformed address (not a valid 0x-prefixed 40-hex-character string) returns an error
- Payment failure or insufficient USDC balance causes a 402 rejection
- Network timeouts if one or more of the ten chains are temporarily unreachable
- Address with zero activity on all chains returns an empty or all-false result
- Rate limiting if too many calls are made in quick succession

## How this service works

Which of ten EVM chains has this address ever touched — Genesis402 / UnyKorn Operator Network

## Output

Returns a JSON object indicating success, a receipt with transaction hash and payment details, and a timestamp. The core result identifies which of ten supported EVM chains the queried address has ever had on-chain activity on, allowing the caller to understand cross-chain presence of a wallet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "address": {
     "type": "string",
     "pattern": "^0x[0-9a-fA-F]{40}$"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "evm-multi-chain-scan",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.008,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-multi-chain-address-activity-scanner-4010b0f7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)