> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Market Overview

> Circulating market cap and trading volume summed over the assets in each sector and sub-sector.

Series are keyed by the sector or sub-sector name, the same taxonomy the Assets table reports for each asset.

## Endpoints

| Model                                                                                  | Access | Timeseries                                                                                                                                                                      |
| -------------------------------------------------------------------------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Sector Marketdata](/api-reference/data-api/market-overview/sector-marketdata)         | Paid   | [Batch](/api-reference/data-api/market-overview/timeseries-sector-marketdata), [One series](/api-reference/data-api/market-overview/timeseries-sector-marketdata-by-id)         |
| [Sub-Sector Marketdata](/api-reference/data-api/market-overview/sub-sector-marketdata) | Paid   | [Batch](/api-reference/data-api/market-overview/timeseries-sub-sector-marketdata), [One series](/api-reference/data-api/market-overview/timeseries-sub-sector-marketdata-by-id) |

## Example

```bash curl theme={null}
curl "https://api.blockworks.com/query/timeseries/sector-marketdata/1d?timeframe=7d&selections=circulating-marketcap,volume" \
  -H "X-Blockworks-API-Key: $BLOCKWORKS_API_KEY"
```

See [Batch Get Sector timeseries](/api-reference/data-api/market-overview/timeseries-sector-marketdata) for the response and the errors.

## Guides

<CardGroup cols={2}>
  <Card title="Finding an id" icon="key" href="/api-reference/data-api/discovery/finding-an-id">
    Every series key, the table it comes from and the identifiers that resolve to it.
  </Card>

  <Card title="Granularity" icon="clock" href="/getting-started/concepts/granularity">
    Choosing an interval and bounding a time window.
  </Card>

  <Card title="Tabular vs timeseries" icon="book" href="/getting-started/concepts/tabular-vs-timeseries">
    The two model kinds, their URL shapes, and when to reach for each.
  </Card>
</CardGroup>