# Synapse API — Kaia Latest Block

> Synapse API — Kaia 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 2026-09-14).

Fetches the most recent block data from the Kaia blockchain network

## Facts

- Endpoint: POST https://synapse-api-brown.vercel.app/api/kaia/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-kaia-latest-block-0eb23088
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E8fJCDQiX8ivO1R15-KlM

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-kaia-latest-block-0eb23088 -d '<json body>'
```

Example prompt: Can you grab the latest block from the Kaia blockchain for me — I need the block number, hash, and timestamp right now?

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call lookup of the latest Kaia block without managing your own RPC node. Useful for agents that only occasionally need Kaia chain-head data and want to avoid infrastructure overhead. Prefer alternatives with WebSocket subscriptions if you need continuous real-time streaming rather than on-demand polling.

## Known failure modes

- Network unavailability of the Kaia RPC node returns a 5xx error
- Payment failure via x402 protocol results in 402 Payment Required response
- Kaia network downtime or reorganization may return stale or inconsistent block data
- Malformed request body causes a 400 Bad Request
- Rate limiting or quota exhaustion may return 429 Too Many Requests

## 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 structured data about the most recently produced block on the Kaia blockchain, including block number (height), block hash, timestamp, transaction list or count, and other standard block header fields.

## 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-kaia-latest-block-0eb23088/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)