# Saylor Innovations On-Chain Lookups — Arbitrum Latest Block

> Saylor Innovations On-Chain Lookups — Arbitrum Latest Block is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Fetches the latest block data from the Arbitrum EVM chain, including block number, hash, timestamp, gas metrics, and transaction count.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/evm/arbitrum/block/latest?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-on-chain-lookups-arbitrum-latest-block-6b962844
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ryklMHu9gDjCyFmjiZWDp

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 saylor-innovations-on-chain-lookups-arbitrum-latest-block-6b962844
```

Example prompt: What's the latest block on Arbitrum right now — give me the block number, hash, timestamp, and current base fee in gwei?

## When to prefer this

Choose this endpoint when you need real-time Arbitrum latest block data — including gas metrics, tx count, and block hash — via a simple GET call with per-request x402 micropayment pricing. Prefer this over Ethereum or other EVM endpoints when specifically targeting Arbitrum Layer 2 chain state.

## Known failure modes

- Network or upstream RPC node unavailability returns an error or empty response
- Arbitrum node lag may cause slightly stale block data
- Missing or null numeric fields if the node is syncing
- Payment not processed (x402 protocol failure) results in a 402 response with no data

## How this service works

EVM Block (arbitrum) — On-Chain Data

## Output

Returns a JSON object containing the latest Arbitrum block's chain name, block number, block hash, miner address, timestamp (Unix epoch), human-readable time, gas used, gas limit, transaction count, and base fee in gwei. Some fields may be null if not available.

## 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",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "chain",
      "number",
      "hash"
     ],
     "properties": {
      "hash": {
       "type": "string"
      },
      "time": {
       "type": "string"
      },
      "chain": {
       "type": "string"
      },
      "miner": {
       "type": "string"
      },
      "number": {
       "type": [
        "number",
        "null"
       ]
      },
      "gas_used": {
       "type": [
        "number",
        "null"
       ]
      },
      "tx_count": {
       "type": [
        "number",
        "null"
       ]
      },
      "gas_limit": {
       "type": [
        "number",
        "null"
       ]
      },
      "timestamp": {
       "type": [
        "number",
        "null"
       ]
      },
      "base_fee_gwei": {
       "type": [
        "number",
        "null"
       ]
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-on-chain-lookups-arbitrum-latest-block-6b962844/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)