> For the complete documentation index, see [llms.txt](https://docs.growthepie.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.growthepie.com/api-reference/api/chain-overview-json.md).

# Endpoint: chains/{origin\_key}/overview\.json

`chains/{origin_key}/overview.json` returns a rich summary for one chain. This endpoint is the right choice when you want highlights, events, rankings, KPI cards, achievements, and ecosystem context in one response instead of reconstructing a chain profile yourself from flat exports.

## Request

```
GET https://api.growthepie.com/v1/chains/{origin_key}/overview.json
```

Example:

```
GET https://api.growthepie.com/v1/chains/arbitrum/overview.json
```

## Key Response Sections

* `last_updated_utc`
* `data.chain_id`
* `data.chain_name`
* `data.highlights`
* `data.events`
* `data.ranking`
* `data.kpi_cards`
* `data.achievements`
* `data.blockspace`
* `data.ecosystem`

## Example Response

```json
{
  "last_updated_utc": "2026-03-27 05:35:04",
  "data": {
    "chain_id": "arbitrum",
    "chain_name": "Arbitrum One",
    "highlights": [
      {
        "metric_id": "txcount",
        "metric_name": "Transaction Count",
        "type": "lifetime_level_up",
        "date": "2026-03-24"
      }
    ],
    "ecosystem": {
      "active_apps": {
        "7d": 0
      }
    }
  }
}
```

## When To Use chain overview

* You are building a chain summary page
* You need Ethereum ecosystem rankings and KPI cards
* You want chain context plus ecosystem context in one request

## Caveats

* This endpoint is structured for overview use cases, not raw analytics row exports.
* The available ranking and KPI card metrics depend on chain support and growthepie's chain configuration.

## Related Pages

* [What Is origin\_key?](/core-concepts/what-is-origin-key.md)
* [Endpoint: metrics/chains/{origin\_key}/{metric\_id}.json](/api-reference/api/metric-detail-json.md)