# Synapse API — Aptos Latest Block

> Synapse API — Aptos Latest Block 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 2026-09-13).

Fetches the most recent block data from the Aptos blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/aptos/block/latest
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-api-aptos-latest-block-055c7192
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lXLD7HBIjKeOFmTXABHUC

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-aptos-latest-block-055c7192 -d '<json body>'
```

Example prompt: What is the latest block on the Aptos blockchain right now — give me the block height, hash, and timestamp?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call lookup of the Aptos chain's latest block without managing your own node infrastructure. Ideal for lightweight agents that only occasionally need Aptos block data and don't want to maintain a persistent RPC connection. Prefer this over self-hosted Aptos nodes when cost-per-call is acceptable and operational overhead should be minimal.

## Known failure modes

- Aptos node unavailability causing upstream timeout
- Empty or malformed block response if the chain is experiencing issues
- Rate limiting or payment failure (x402) if USDC balance is insufficient
- Network connectivity issues reaching synapse-api-brown.vercel.app
- Stale data if the upstream Aptos node is behind the chain tip

## 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 most recent block data from the Aptos blockchain, including block height (ledger version), block hash, timestamp, and related metadata about the chain's current head.

## 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-aptos-latest-block-055c7192/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)