---
title: "Base block inspection"
method: POST
path: "/v1/crypto/base-block-inspect"
tags: ["crypto"]
---

# Base block inspection

`POST /v1/crypto/base-block-inspect`

## Request

- Base URL: `https://apiacre.com`
- URL: `https://apiacre.com/v1/crypto/base-block-inspect`
- Auth: none required

Get and inspect one historical Base mainnet block by exact number or a latest, safe, or finalized tag, returning its header timestamp, transaction count, gas use, base and blob fees, state and receipt roots, confirmations, and head-distance evidence.

Price: **$0.001 USDC** via x402 exact payment on Base and Solana.

## Request body

- BaseBlockInspectInput
  - `block_number` integer, nullable: Optional Base block number as a JSON-safe integer. When provided it takes precedence over block_tag.
  - `block_tag` 'latest' | 'safe' | 'finalized': Base block tag used only when block_number is omitted

## Response `200`

Successful Response

- ServiceResponse
  - `request_id` string, required
  - `service` string, required
  - `version` string
  - `data` object, required
  - `meta` ServiceMeta, required
    - `duration_ms` integer, required
    - `cached` boolean
    - `sources` string[]
    - `warnings` string[]
    - `next_actions` ServiceNextAction[]
      - `service` string, required
      - `title` string, required
      - `reason` string, required
      - `method` 'POST'
      - `path` string, required
      - `price` string, required
      - `input_template` object, required
      - `use_output` string, required
      - `handoff_path` string, required
      - `checkout_path` string, required
      - `sample_path` string, nullable, required
      - `maximum_atomic_usdc` string, required
      - `handoff_payment_required` false
      - `executes_automatically` false
      - `authorization_required` boolean

## Other responses

- `402`: Payment Required. Decode PAYMENT-REQUIRED, satisfy the x402 requirement, and retry with PAYMENT-SIGNATURE.
- `422`: Validation Error

---

[API](https://skmtc.dev/apiacre/apis/api-acre.md) · [All operations](https://skmtc.dev/apiacre/apis/api-acre/llms.txt) · [OpenAPI document](https://skmtc.dev/apiacre/apis/api-acre/revisions/0ba942b920ad?raw)