# 402.com.tr B20 Guard Live Feed

> 402.com.tr B20 Guard Live Feed is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns live onchain guard status for a specific B20 token or a real-time feed of Base tokens that just became seizable (attached sender blocklists), captured sub-second via webhook.

## Facts

- Endpoint: GET https://402.com.tr/api/x402/b20-guard
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/402-com-tr-b20-guard-live-feed-68961d51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cH5mN_yb0lZWP0pTCPrha

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 402-com-tr-b20-guard-live-feed-68961d51
```

Example prompt: What's the current B20 guard status for the token at 0xAbC123... on Base — is it paused or does it have a sender blocklist attached making it seizable?

## When to prefer this

Use this endpoint when you need real-time, sub-second B20 policy event monitoring on Base — specifically to check if a token has a sender blocklist (seizable) or is paused, or to get a live feed of newly seizable tokens across the entire Base network. Prefer this over batch B20 scoring endpoints when you need live webhook-driven updates rather than on-demand multi-token analysis.

## Known failure modes

- Invalid or non-B20 token address returns an error or empty guard status
- Token address not found on Base returns no data
- Network or webhook delay may result in slightly stale data in edge cases
- Missing required query structure may return a 400 error

## How this service works

The live layer over B20 Policy Watch: a network-wide onchain webhook captures every B20 PolicyUpdated/Paused sub-second. Pass a token address for its live guard status, or call with no address for the feed of tokens that JUST attached a sender blocklist (turned seizable) across all of Base.

## Output

For a specific token address: its live guard status including whether a sender blocklist is active (seizable), whether it's paused, and recent PolicyUpdated events. For the network feed (no address): a list of tokens across Base that just had a sender blocklist attached, captured sub-second from onchain webhook events.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "address": {
       "type": "string",
       "description": "B20 token (optional — omit for network feed)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/402-com-tr-b20-guard-live-feed-68961d51/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402.com.tr](https://www.zero.xyz/host/402.com.tr/llms.txt)