# Hearth EVM Block Info

> Hearth EVM Block Info is a paid API for AI agents from 138-197-15-135.sslip.io, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-26).

Fetches on-chain block metadata (hash, timestamp, gas, tx count) for a given EVM chain and block number.

## Facts

- Endpoint: GET https://138-197-15-135.sslip.io/v1/evm/block?utm_source=zero.xyz
- Price: $0.0009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hearth-evm-block-info-256d0f10
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rlA5EZ5pu3q1jFMOX9XDU

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 hearth-evm-block-info-256d0f10
```

Example prompt: What are the details for block 21000000 on Ethereum — give me the hash, timestamp, gas used, and transaction count.

## When to prefer this

Use this endpoint when you need lightweight EVM block metadata (hash, timestamp, gas, tx count) for Base, Ethereum, Arbitrum, or Optimism without running a full node or managing RPC endpoints. It is pay-per-call via x402/USDC, making it suitable for occasional agent lookups without subscription overhead.

## Known failure modes

- Block number not yet mined returns an error or empty result
- Invalid chain name returns a 400 or error response
- Network congestion may cause slightly stale latest-block data
- Unsupported chain names outside base/ethereum/arbitrum/optimism cause failure

## How this service works

Web page to clean Markdown for AI agents. Pay per call with x402 (USDC on Base).

## Output

A JSON object containing the block's chain name, block number, hash, ISO 8601 timestamp, Unix timestamp, gas used, gas limit, transaction count, and base fee in gwei.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "queryParams"
   ],
   "properties": {
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "chain": {
       "type": "string",
       "description": "Chain: base (default), ethereum, arbitrum, optimism"
      },
      "number": {
       "type": "string",
       "description": "Block number (default latest)"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "iso": "2026-01-01T00:00:00.000Z",
  "hash": "0x…",
  "chain": "base",
  "number": 1,
  "gasUsed": "1",
  "txCount": 100,
  "gasLimit": "1",
  "timestamp": 1700000000,
  "baseFeeGwei": "0.01"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hearth-evm-block-info-256d0f10/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 138-197-15-135.sslip.io](https://www.zero.xyz/host/138-197-15-135.sslip.io/llms.txt)