# Checkpoint402 Token Check

> Checkpoint402 Token Check is a paid API for AI agents from api.checkpoint402.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).

Returns a 0-100 safety score, verdict, red flags, and plain-English summary for any token contract on Base, Ethereum, or BSC

## Facts

- Endpoint: GET https://api.checkpoint402.com/v1/token-check?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/checkpoint402-token-check-e75c6b72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zTPhSjM2xvSktcPWv2TUs

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 checkpoint402-token-check-e75c6b72
```

Example prompt: Can you check if this Base token at 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed is safe — I want to know the safety score, any red flags like honeypot or hidden fees, and a plain-English verdict before I buy.

## When to prefer this

Use this endpoint when an agent or user needs a quick, comprehensive safety assessment of a specific token contract before interacting with it financially. It is ideal for pre-trade due diligence, DeFi portfolio screening, or alerting users about risky tokens. Prefer this over raw on-chain queries when you need aggregated risk signals (honeypot detection, creator history, liquidity lock status) in a single call without building custom analysis pipelines.

## Known failure modes

- Invalid or malformed contract address returns an error
- Token not found on the specified chain returns no data
- Unsupported chain value returns validation error
- Very newly deployed token may have incomplete liquidity/DEX data
- GoPlus or DexScreener data lag may cause stale results for brand-new tokens
- Payment failure (insufficient USDC) results in 402 response

## How this service works

Is this token a scam? Checks any token on Base, Ethereum or BSC and returns a 0-100 safety score, a verdict, red flags (honeypot, hidden fees, owner powers, unlocked liquidity, whale concentration, creator's past honeypots), good signs and a plain-English summary. Data: GoPlus + DexScreener.

## Output

A JSON object containing a 0-100 safety score, a verdict (e.g. safe/risky/scam), a list of red flags (such as honeypot detection, hidden fees, owner mint/blacklist powers, unlocked liquidity, whale concentration, creator honeypot history), a list of good signs, and a plain-English summary explaining the findings.

## 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": {
       "enum": [
        "base",
        "ethereum",
        "bsc"
       ],
       "type": "string",
       "description": "Chain (default base)"
      },
      "address": {
       "type": "string",
       "description": "Token contract address (0x + 40 hex chars)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/checkpoint402-token-check-e75c6b72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.checkpoint402.com](https://www.zero.xyz/host/api.checkpoint402.com/llms.txt)