# TraceFast Latest Ethereum Block

> TraceFast Latest Ethereum Block is a paid API for AI agents from mpp.tracefast.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Returns the most recent Ethereum mainnet block with its header and aggregated totals: transaction counts by outcome, gas used, fees, value transferred, and withdrawals.

## Facts

- Endpoint: GET https://mpp.tracefast.xyz/api/v1/chains/1/blocks/latest?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tracefast-latest-ethereum-block-ab6bdf00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DqBN2MojS13Bbbcqxk2oA

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 tracefast-latest-ethereum-block-ab6bdf00
```

Example prompt: What does the latest Ethereum block look like right now — give me the block number, how many transactions it had and by what outcome, total gas used, fees, and ETH moved.

## When to prefer this

Choose this endpoint when you need a quick, pre-aggregated snapshot of the Ethereum chain head — block header plus rolled-up transaction, gas, fee, value, and withdrawal totals — without having to parse raw RPC responses or compute aggregates yourself. Prefer it over raw eth_getBlockByNumber when you want structured summaries rather than raw transaction lists, and over historical block endpoints when you specifically need the live chain tip.

## Known failure modes

- Network or node unavailability returns a 5xx error
- Payment not attached or insufficient USDC triggers a 402 Payment Required response
- Chain ID 1 (mainnet) is the only supported target; other chains return 404 or unsupported
- Temporary delay between block production and indexing may serve a block that is 1-2 slots stale

## How this service works

TraceFast live Ethereum data: the most recent block, with its header and the totals of what it contains — transaction counts by outcome, gas, fees, value moved, withdrawals. The same shape as `blocks/{number}`. Docs: https://docs.tracefast.xyz/api/block-latest.md

## Output

A JSON object matching the blocks/{number} schema, containing the block header (number, hash, timestamp, miner, etc.), aggregated transaction counts broken down by outcome (success, revert, etc.), total gas used, total fees, total native value moved, and withdrawal totals for the most recently finalized Ethereum mainnet block.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tracefast-latest-ethereum-block-ab6bdf00/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.tracefast.xyz](https://www.zero.xyz/host/mpp.tracefast.xyz/llms.txt)