If a vector value is included, it will overwrite the previous value. If `set_metadata` is included, only the specified metadata fields are modified, and if a specified metadata field does not exist, it is added.
For guidance and examples, see [Update data](/guides/manage-data-update-data).

:::code-group
```shell curl
# 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 "https://$INDEX_HOST/vectors/update" \
  -H "Api-Key: $PINECONE_API_KEY" \
  -H "Content-Type: application/json" \
  -H "X-Pinecone-Api-Version: 2026-07" \
  -d '{
        "id": "id-3",
        "values": [4.0, 2.0],
        "setMetadata": {"type": "comedy"},
        "namespace": "example-namespace"
      }'
```
:::

`POST /vectors/update`

:::code-group
```json title="200"
{
  "matchedRecords": 42
}
```

```json title="400"
{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "typeUrl": "<string>",
      "value": "<string>"
    }
  ]
}
```

```json title="4XX"
{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "typeUrl": "<string>",
      "value": "<string>"
    }
  ]
}
```

```json title="5XX"
{
  "code": 123,
  "message": "<string>",
  "details": [
    {
      "typeUrl": "<string>",
      "value": "<string>"
    }
  ]
}
```
:::

#### Authorizations

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `Api-Key` | `string` | - |  |

An API Key is required to call Pinecone APIs. Get yours from the [console](https://app.pinecone.io/).

#### Headers

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `X-Pinecone-Api-Version` | `string` | `2026-07` | Required date-based version header |

#### Body

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `id?` | `string` | - | Vector's unique id. Required string length: 1 - 512. Example: example-vector-1 |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `values?` | `number[]` | - | Vector data. |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `sparseValues?` | `object` | - | Vector sparse data. Represented as a list of indices and a list of corresponded values, which must be with the same length. |

:::accordion{title="Show child attributes"}
| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `indices` | `integer[]` | - | The indices of the sparse data. |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `values` | `number[]` | - | The corresponding values of the sparse data, which must be with the same length as the indices. |
:::

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `setMetadata?` | `object` | - | Metadata to set for the record. Field names may not begin with $, which is reserved for filter operators. |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `namespace?` | `string` | - | The namespace containing the record to update. Example: example-namespace |

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `filter?` | `object` | - |  |

A metadata filter expression. When updating metadata across records in a namespace, the update is applied to all records that match the filter. See [Understanding metadata](/guides/index-data-indexing-overview#metadata).

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `dryRun?` | `boolean` | `false` | If true, return the number of records that match the filter, but do not execute the update. Default is false. Example: false |

#### Response

`200` — A successful response.

The response for the `update` operation.

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `matchedRecords?` | `integer` | - | The number of records that matched the filter (if a filter was provided). Example: 42 |

## Related pages

- [Search with a vector](./database-data-plane-query.md)
- [Search with text](./database-data-plane-search-records.md)
- [Upsert records](./database-data-plane-upsert.md)
- [Upsert text](./database-data-plane-upsert-records.md)
- [Fetch records](./database-data-plane-fetch.md)
- [Fetch records by metadata](./database-data-plane-fetch-by-metadata.md)
- [Delete records](./database-data-plane-delete.md)
- [List record IDs](./database-data-plane-list.md)

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