# EVM Address Summary — All Cheap On-Chain Facts in One Call

> EVM Address Summary — All Cheap On-Chain Facts in One Call is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-01).

Returns everything cheaply knowable about an EVM address in a single call: native balance, token holdings, contract status, activity, and more across 10 EVM chains.

## Facts

- Endpoint: POST https://twin.unykorn.org/evm-address-summary?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/evm-address-summary-all-cheap-on-chain-facts-in-one-call-dd038335
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9CDk0oI__bq4xUejz78EG

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-summary-all-cheap-on-chain-facts-in-one-call-dd038335 -d '<json body>'
```

Example prompt: Give me a full on-chain summary of the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum — everything cheap you can find out about it in one call.

## When to prefer this

Choose this endpoint when you need a broad, multi-faceted snapshot of an EVM address and want to minimize the number of API calls and cost. It bundles all 'cheap' lookups (balance, tokens, contract status, activity) into one $0.006 call across 10 major EVM chains. Prefer it over specialized siblings when you don't know in advance which facts you'll need, or when you want an efficient first pass before drilling into details.

## Known failure modes

- Invalid address format (not a 0x + 40 hex chars) returns a validation error
- Unsupported chain value returns an enum error
- Payment failure (x402 micropayment not completed) returns 402 Payment Required
- Network/RPC timeout for the target chain may return a 5xx error
- Address with no on-chain history may return empty fields but still ok: true

## How this service works

Everything cheap that is knowable about an address, in one call — Genesis402 / UnyKorn Operator Network

## Output

A JSON object with ok: true, the summary type 'evm-address-summary', a receipt with transaction hash and amount paid, and a generated_at timestamp. The body contains aggregated cheap on-chain facts about the address: expected to include native token balance, ERC-20/token holdings, contract vs EOA classification, and activity indicators for the requested chain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "chain": {
     "enum": [
      "ethereum",
      "base",
      "polygon",
      "arbitrum",
      "optimism",
      "bsc",
      "avalanche",
      "gnosis",
      "linea",
      "scroll"
     ],
     "type": "string"
    },
    "address": {
     "type": "string",
     "pattern": "^0x[0-9a-fA-F]{40}$"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "evm-address-summary",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.006,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/evm-address-summary-all-cheap-on-chain-facts-in-one-call-dd038335/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)