Serverless indexes scale automatically as needed, so index fullness is relevant only for pod-based indexes.

```python Python theme={null}
# pip install "pinecone[grpc]"
from pinecone.grpc import PineconeGRPC as Pinecone

pc = Pinecone(api_key="YOUR_API_KEY")

# To get the unique host for an index, 
# see https://docs.pinecone.io/guides/manage-data/target-an-index
index = pc.Index(host="INDEX_HOST")

index.describe_index_stats()
```

```javascript JavaScript theme={null}
// npm install @pinecone-database/pinecone
import { Pinecone } from '@pinecone-database/pinecone'

const pc = new Pinecone({ apiKey: 'YOUR_API_KEY' })

// To get the unique host for an index, 
// see https://docs.pinecone.io/guides/manage-data/target-an-index
const index = pc.index("INDEX_NAME", "INDEX_HOST")

const stats = await index.describeIndexStats();
```

```java Java theme={null}
import io.pinecone.clients.Index;
import io.pinecone.configs.PineconeConfig;
import io.pinecone.configs.PineconeConnection;
import io.pinecone.proto.DescribeIndexStatsResponse;

public class DescribeIndexStatsExample {
    public static void main(String[] args) {
        PineconeConfig config = new PineconeConfig("YOUR_API_KEY");
        // To get the unique host for an index, 
        // see https://docs.pinecone.io/guides/manage-data/target-an-index
        config.setHost("INDEX_HOST");
        PineconeConnection connection = new PineconeConnection(config);
        Index index = new Index(connection, "INDEX_NAME");
        DescribeIndexStatsResponse indexStatsResponse = index.describeIndexStats();
        System.out.println(indexStatsResponse);
    }
}
```

```go Go theme={null}
package main

import (
    "context"
    "log"

    "github.com/pinecone-io/go-pinecone/v3/pinecone"
)

func main() {
    ctx := context.Background()

    pc, err := pinecone.NewClient(pinecone.NewClientParams{
        ApiKey: "YOUR_API_KEY",
    })
    if err != nil {
        log.Fatalf("Failed to create Client: %v", err)
    }

    // To get the unique host for an index, 
    // see https://docs.pinecone.io/guides/manage-data/target-an-index
    idxConnection, err := pc.Index(pinecone.NewIndexConnParams{Host: "INDEX_HOST"})
    if err != nil {
        log.Fatalf("Failed to create IndexConnection for Host: %v", err)
  	}

    stats, err := idxConnection.DescribeIndexStats(ctx)
    if err != nil {
        log.Fatalf("Failed to describe index \"%v\": %v", idx.Name, err)
    } else {
        fmt.Printf("%+v", *stats)
    }
}
```

```csharp C# theme={null}
using Pinecone;

var pinecone = new PineconeClient("YOUR_API_KEY");

// To get the unique host for an index, 
// see https://docs.pinecone.io/guides/manage-data/target-an-index
var index = pinecone.Index(host: "INDEX_HOST");

var indexStatsResponse = await index.DescribeIndexStatsAsync(new DescribeIndexStatsRequest());

Console.WriteLine(indexStatsResponse);
```

```shell curl theme={null}
# To get the unique host for an index,
# see https://docs.pinecone.io/guides/manage-data/target-an-index
PINECONE_API_KEY="YOUR_API_KEY"
INDEX_HOST="INDEX_HOST"

curl -X POST "https://$INDEX_HOST/describe_index_stats" \
  -H "Api-Key: $PINECONE_API_KEY" \
  -H "X-Pinecone-Api-Version: 2025-01"
```

```Python Python theme={null}
{'dimension': 1024,
 'index_fullness': 0,
 'namespaces': {'example-namespace1': {'vector_count': 4}, 'example-namespace2': {'vector_count': 4}},
 'total_vector_count': 8}
```

```javascript JavaScript theme={null}
Returns:
{
  "namespaces": { "example-namespace1": { "recordCount": 4 }, "example-namespace2": { "recordCount": 4 } },
  "dimension": 1024,
  "indexFullness": 0,
  "totalRecordCount": 8
}

// Note: the value of totalRecordCount is the same as total_vector_count.
```

```java Java theme={null}
namespaces {
  key: "example-namespace1"
  value {
    vector_count: 4
  }
}
namespaces {
  key: "example-namespace2"
  value {
    vector_count: 4
  }
}
dimension: 1024
total_vector_count: 8
```

```go Go theme={null}
{
  "dimension": 1024,
  "index_fullness": 0,
  "total_vector_count": 8,
  "namespaces": {
    "example-namespace1": {
      "vector_count": 4
    },
    "example-namespace2": {
      "vector_count": 4
    }
  }
}
```

```csharp C# theme={null}
{
  "namespaces": {
    "example-namespace1": {
      "vectorCount": 4
    },
    "example-namespace2": {
      "vectorCount": 4
    }
  },
  "dimension": 1024,
  "indexFullness": 0,
  "totalVectorCount": 8
}
```

```json curl theme={null}
{
  "namespaces": {
    "example-namespace1": {
      "vectorCount": 4
    },
    "example-namespace2": {
      "vectorCount": 4
    }
  },
  "dimension": 1024,
  "indexFullness": 0,
  "totalVectorCount": 8
}
```

`POST /describe_index_stats`

:::code-group
```bash title="cURL"
curl --request POST \
  --url https://{index_host}/describe_index_stats \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "filter": {}
}'
```

```json title="200"
{
  "dimension": 1024,
  "index_fullness": 0.4,
  "namespaces": {
    "": {
      "vectorCount": 50000
    },
    "example-namespace-2": {
      "vectorCount": 30000
    }
  },
  "totalVectorCount": 80000
}
```
:::

## Authorizations

- `Authorization` (header, string, required) — Bearer authentication header of the form `Bearer <token>`.

## Body

- `filter` (body, object) — If this parameter is present, the operation only returns statistics for vectors that satisfy the filter. See [Understanding metadata](/guides/index-data-indexing-overview#metadata). Serverless indexes do not support filtering `describe_index_stats` by metadata.

## Response

- `200` — A successful response.
- `400` — Bad request. The request body included invalid request parameters.
- `4XX` — An unexpected error response.
- `5XX` — An unexpected error response.

## Related pages

- [List indexes](./database-2026-07-control-plane-list-indexes.md)
- [Create an index](./database-2026-07-control-plane-create-index.md)
- [Create an index with integrated embedding](./database-2026-07-control-plane-create-for-model.md)
- [Describe an index](./database-2026-07-control-plane-describe-index.md)
- [Delete an index](./database-2026-07-control-plane-delete-index.md)
- [Configure an index](./database-2026-07-control-plane-configure-index.md)
- [Get index stats](./database-2026-07-data-plane-describeindexstats.md)
- [List indexes](./database-2026-04-control-plane-list-indexes.md)
- [Create an index](./database-2026-04-control-plane-create-index.md)
- [Create an index with integrated embedding](./database-2026-04-control-plane-create-for-model.md)

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