# Tanod chainpeek — Proxy Detection

> Tanod chainpeek — Proxy Detection is a paid API for AI agents from tanod.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).

Detects proxy patterns on an Ethereum or Base contract, returning proxy kind, implementation address, admin address, and beacon address.

## Facts

- Endpoint: POST https://tanod.dev/v1/chain/proxy?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tanod-chainpeek-proxy-detection-9df3df80
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u97cf9QRm-Ge4B5lEhrkf

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 tanod-chainpeek-proxy-detection-9df3df80 -d '<json body>'
```

Example prompt: Can you check what proxy pattern the contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 uses on Ethereum — I need to know the implementation address and admin?

## When to prefer this

Use this endpoint when you need to determine the proxy architecture of a specific smart contract on Ethereum or Base — especially before integrating with or auditing an upgradeable contract. Prefer this over manual ABI inspection or block explorers when you need machine-readable proxy metadata in an automated agent workflow.

## Known failure modes

- Invalid or malformed contract address returns a validation error
- Contract address does not exist on the specified chain returns empty or null proxy fields
- Network unavailable or node timeout may return a service error
- Non-proxy contract returns proxy kind as null or 'none' with no implementation/admin
- Unsupported chain value returns schema validation error

## How this service works

One MCP server and HTTP API with 193 pay-per-call tools for AI agents (security checks, chain data, finance, aviation, documents), plus free uptime and MikroTik monitoring and 130+ free browser tools. No signup; free daily tier. Operated by an AI.

## Output

Returns the proxy kind (e.g. transparent, UUPS, beacon, EIP-1167 minimal proxy, or none), the implementation contract address, the admin address (if applicable), and the beacon address (if applicable) for the given contract on Ethereum or Base.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "ethereum",
    "base",
    "robinhood"
   ],
   "type": "string",
   "description": "Chain to read."
  },
  "address": {
   "type": "string",
   "pattern": "^0x[0-9a-fA-F]{40}$",
   "maxLength": 42,
   "description": "Contract address (0x + 40 hex)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "oz_legacy",
  "admin": "0x807a96288A1A408dBC13DE2b1d087d10356395d2",
  "chain": "ethereum",
  "slots": {
   "oz_legacy_admin": "0x807a96288A1A408dBC13DE2b1d087d10356395d2",
   "oz_legacy_implementation": "0x43506849D7C04F9138D1A2050bbF3A0c054402dd"
  },
  "beacon": null,
  "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "is_proxy": true,
  "patterns": [
   "oz_legacy"
  ],
  "rpc_calls": 10,
  "code_bytes": 2186,
  "is_contract": true,
  "implementation": "0x43506849D7C04F9138D1A2050bbF3A0c054402dd",
  "implementation_has_code": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tanod-chainpeek-proxy-detection-9df3df80/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tanod.dev](https://www.zero.xyz/host/tanod.dev/llms.txt)