# Token Safety Checkup (x402node)

> Token Safety Checkup (x402node) is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-14).

Aggregates contract verification, on-chain age, proxy status, and market cap rank into a single risk score and verdict for any ERC20 token

## Facts

- Endpoint: GET https://api.x402node.dev/chain/token-checkup
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/token-safety-checkup-x402node-1d422541
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j24UpbbQr1RVfST8ejSU1

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 token-safety-checkup-x402node-1d422541
```

Example prompt: Can you run a full token safety checkup on 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed on Base — I want to know the risk score, whether the contract is verified, how old it is, if it's a proxy, and where it ranks by market cap before I buy any.

## When to prefer this

Use this endpoint when you need a comprehensive, pre-aggregated token risk assessment in a single call rather than manually querying contract verification, on-chain age, proxy status, and market cap rank from separate sources and reasoning over them yourself. Ideal for due diligence before trading, investing, or integrating any ERC20 token.

## Known failure modes

- Invalid or unrecognized contract address returns an error
- Token not found on the specified chain returns a not-found error
- Network congestion or RPC issues may cause timeouts
- Unverified contracts may have limited metadata available
- Very new tokens with no on-chain history may have incomplete signals

## How this service works

One-call token safety check that aggregates contract verification, on-chain age, proxy status and market cap rank into a single risk score and verdict - combines multiple sources an agent would otherwise query and reason over separately. token checkup, token safety score, token risk, is token safe, rug check, token due diligence Accepts payment on Base or Solana — either network works.

## Output

A consolidated safety report including a risk score and verdict, contract verification status, token on-chain age, proxy detection result, and market cap rank — all sourced and reasoned over in a single call instead of requiring multiple separate queries.

## Example request

```json
{
 "chain": "base",
 "address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed"
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "description": "ethereum, base (default), arbitrum, optimism, polygon"
      },
      "address": {
       "type": "string",
       "description": "Token contract (required)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/token-safety-checkup-x402node-1d422541/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)