# Blockscout Arbitrum Committed Batches

> Blockscout Arbitrum Committed Batches is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-10).

Returns a list of committed Arbitrum L2 batches including block counts, transaction counts, and commitment transaction details from the main page view

## Facts

- Endpoint: GET https://api.blockscout.com/%7Bchain_id%7D/api/v2/main-page/arbitrum/batches/committed
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockscout-arbitrum-committed-batches-234018ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_70CPcfeB6XayQUsqkggv4

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 blockscout-arbitrum-committed-batches-234018ec
```

Example prompt: Show me the latest committed Arbitrum batches on Blockscout — I want to see how many blocks and transactions each batch contains along with their L1 commitment transaction hashes and statuses.

## When to prefer this

Use this endpoint when you specifically need Arbitrum committed batch data including L1 commitment transaction metadata, block/transaction counts per batch, and batch sequencer activity. Prefer this over generic transaction queries when your goal is rollup-layer batch-level analysis rather than individual transaction lookups. This is ideal for monitoring Arbitrum's L2→L1 settlement pipeline.

## Known failure modes

- Invalid or unsupported chain_id returns an error or empty response
- Network timeout if Blockscout indexer is behind or under load
- Empty items array if no committed batches are currently indexed
- 402 Payment Required if x402 payment header is missing or insufficient
- Rate limiting if too many requests are sent in quick succession

## How this service works

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## Output

A JSON array of committed Arbitrum batch objects, each containing the batch number, block count within the batch, transaction count, batch data container identifier, and a nested commitment transaction object with the L1 transaction hash, status, timestamp, and block number.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "properties": {
      "chain_id": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "items": [
   {
    "number": 0,
    "blocks_count": 0,
    "transactions_count": 0,
    "batch_data_container": "string",
    "commitment_transaction": {
     "hash": "string",
     "status": "string",
     "timestamp": "string",
     "block_number": 0
    }
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockscout-arbitrum-committed-batches-234018ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.blockscout.com](https://www.zero.xyz/host/api.blockscout.com/llms.txt)