# Centry Base B20 Token Verification

> Centry Base B20 Token Verification is a paid API for AI agents from centry.cybercentry.co.uk, paid per call via x402, $1/call, status unknown (last checked 2026-09-15).

Detects holder-harm threats and discloses issuer controls for Base B20 native tokens, identifying honeypots, freeze-and-seize, ticker impersonation, and supply/transfer policy risks.

## Facts

- Endpoint: GET https://centry.cybercentry.co.uk/api/services/base_token_verification
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/centry-base-b20-token-verification-a077af82
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S0kOpBwAOiO7VuTssPdOZ

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 centry-base-b20-token-verification-a077af82
```

Example prompt: Can you run a security check on this Base B20 token — I want to know if it's a honeypot, if the issuer can freeze or pause my funds, and whether the ticker might be impersonating a real project?

## When to prefer this

Use this endpoint specifically when evaluating Base network B20 native tokens for holder safety and issuer control risks. Prefer this over generic EVM token checkers when you need B20-specific threat detection (honeypot, freeze-and-seize, ticker impersonation) combined with issuer control transparency in a single call. For non-Base chains or non-B20 tokens, consider the sibling EVM blockchain security endpoint.

## Known failure modes

- Token address not found on Base network — returns not-found or empty result
- Invalid or malformed token address — returns validation error
- Token is not a B20 native token — may return unsupported token type error
- Network timeout or RPC failure — returns service unavailable
- Rate limiting exceeded — returns 429 or payment required

## How this service works

Check a Base token contract before buying: detects honeypots, armed freeze-and-seize, a live pause, fake B20s and ticker-impersonation copycats, and separately discloses issuer controls (admin centralisation, supply cap, transfer policy, rebase) so a legitimate token is not mistaken for a scam

## Output

Returns a trust profile for the specified Base B20 token including: holder-harm threat flags (honeypot detected, armed freeze-and-seize, live pause capability, fake B20 identification, ticker impersonation copycat detection) and issuer control disclosures (admin centralisation level, supply cap details, transfer policies, rebase mechanism).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "detectors": {
   "note": "demo result",
   "service": "base_token_verification"
  },
  "report_url": "https://demo.cybercentry.io/base_token_verification/1786984444032",
  "overall_risk": "Low",
  "control_flags": "demo",
  "threats_count": "demo"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/centry-base-b20-token-verification-a077af82/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from centry.cybercentry.co.uk](https://www.zero.xyz/host/centry.cybercentry.co.uk/llms.txt)