# Synapse API — BNB Latest Block Lookup

> Synapse API — BNB Latest Block Lookup is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Fetches the most recent block data from the BNB (Binance Smart Chain) blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/bnb/block/latest
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-bnb-latest-block-lookup-cb55fa87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QgNDNBdJ0Z5T2kWWaRcn6

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 synapse-api-bnb-latest-block-lookup-cb55fa87 -d '<json body>'
```

Example prompt: What is the latest block on the BNB (Binance Smart Chain) network right now?

## When to prefer this

Use this endpoint when you need the current block height or latest block metadata from BNB Chain specifically, without running your own node. Ideal for lightweight agents that need on-demand blockchain state without maintaining infrastructure. Best when pay-per-call economics are preferable over a subscription RPC plan.

## Known failure modes

- Network timeout if BNB RPC node is unreachable
- Payment failure if insufficient USDC balance for x402 payment
- Invalid or malformed request body returns 400 error
- Stale data if upstream BNB node is temporarily behind
- Rate limiting or throttling under high demand

## How this service works

High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.

## Output

Returns the latest block data from the BNB (Binance Smart Chain) blockchain, including block number, block hash, timestamp, and associated transaction metadata for the most recently mined block.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "properties": {},
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-api-bnb-latest-block-lookup-cb55fa87/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from synapse-api-brown.vercel.app](https://www.zero.xyz/host/synapse-api-brown.vercel.app/llms.txt)