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

# Update Vector

> Updates a vector, data or metadata.

<Tip>
  The vector will be updated int the default namespace by default.
  You can use a different namespace by specifying it in the request path.
</Tip>

## Request

You can update a vector value, data, or metadata; or any combination
of those.

<ParamField body="id" type="string" required>
  The id of the vector.
</ParamField>

<ParamField body="vector" type="number[]">
  The dense vector value to update to for dense and hybrid indexes.
  <Note>The vector should have the same dimensions as your index.</Note>
</ParamField>

<ParamField body="sparseVector" type="Object[]">
  The sparse vector value to update to for sparse and hybrid indexes.

  <Expandable defaultOpen="true">
    <ResponseField name="indices" type="number[]">
      Indices of the non-zero valued dimensions.
    </ResponseField>

    <ResponseField name="values" type="number[]">
      Values of the non-zero valued dimensions.
    </ResponseField>
  </Expandable>
</ParamField>

<ParamField body="data" type="string">
  The raw text data to update to.
  <Note>If the index is created with an [embedding model](/vector/features/embeddingmodels)
  this will embed the data into a vector and will also update the vector, along with data.</Note>
</ParamField>

<ParamField body="metadata" type="Object">
  The metadata to update to.
</ParamField>

<ParamField body="metadataUpdateMode" type="string">
  Whether to overwrite the whole metadata while updating
  it, or patch the metadata (insert new fields or update or delete existing fields)
  according to the `RFC 7396 JSON Merge Patch` algorithm.

  `OVERWRITE` for overwrite, `PATCH` for patch.
</ParamField>

<Note>
  For hybrid indexes either none or both of `vector` and `sparseVector` fields
  must be present. It is not allowed to update only `vector` or `sparseVector`.
</Note>

## Path

<ParamField path="namespace" type="string" default="">
  The namespace to use.
  When no namespace is specified, the default namespace will be used.
</ParamField>

## Response

<ResponseField name="updated" type="number">
  `1` if any vector is updated, `0` otherwise.
</ResponseField>

<RequestExample>
  ```sh curl theme={"system"}
  curl $UPSTASH_VECTOR_REST_URL/update \
    -X POST \
    -H "Authorization: Bearer $UPSTASH_VECTOR_REST_TOKEN" \
    -d '{ "id": "id-1", "metadata": { "link": "upstash.com" } }'
  ```

  ```sh curl (Namespace) theme={"system"}
  curl $UPSTASH_VECTOR_REST_URL/update/ns \
    -X POST \
    -H "Authorization: Bearer $UPSTASH_VECTOR_REST_TOKEN" \
    -d '{ "id": "id-2", "vector": [0.1, 0.2] }'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 OK theme={"system"}
  {
      "result": {
          "updated": 1
      }
  }
  ```
</ResponseExample>