Torch Object Storage
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- Documentation
Torch Object StorageTOS VectorsAPI referenceVector indexCreateIndex
Copy page
Download PDFVector index
CreateIndex
Copy pageDownload PDFCreateIndex
Description
Create a vector index under the vector bucket. The vector index name must be unique within the vector bucket.
Request syntax
The endpoint must use the bucket endpoint.
POST /CreateIndex HTTP/1.1
Host: {VectorBucketName}-{AccountID}.tosvectors-cn-beijing.volces.com
Authorization: authorization string
Date: Mon, 10 Dec 2025 12:49:14 GMT
{
"vectorBucketName": "test-vector-bucket",
"indexName":"test-index",
"dataType": "float32",
"dimension": 5,
"distanceMetric": "euclidean",
"metadataConfiguration":{
"nonFilterableMetadataKeys": [
"key_c",
"key_d"
]
}
}
Request parameters and headers
None.
Request body elements
Field name | Type | Required | Example value | Description |
Field name | Type | Required | Example value | Description |
vectorBucketName | String | Yes | test-vector-bucket | Name of the vector bucket to create the vector index in. |
indexName | String | Yes | test-index | Name of the vector index to be created. length limit: minimum length is 3, maximum length is 63. |
dataType | String | Yes | float32 | Data type of the vectors to be inserted into the vector index. Valid value: float32 |
dimension | integer | Yes | 5 | Dimension of the vector to insert into the vector index. Valid range: minimum 1, maximum 4096. |
distanceMetric | String | Yes | euclidean | Distance metric for similarity search. Valid values: euclidean | cosine |
metadataConfiguration | MetadataConfiguration | No | { "nonFilterableMetadataKeys": [ "key_c", "key_d" ] } | Metadata configuration for the vector index. |
MetadataConfiguration is defined as follows:
Name | Type | Example value | Description |
Name | Type | Example value | Description |
nonFilterableMetadataKeys | string[] | [ "key_c", "key_d" ] | List of metadata keys not available for filtering. |
Response headers
Response body elements
If the operation succeeds, the service returns an HTTP 200 response with an empty response body element.
Sample request
POST /CreateIndex HTTP/1.1
Host: test-vector-bucket-1111.tosvectors-cn-beijing.volces.com
Authorization: authorization string
Date: Mon, 10 Dec 2025 12:49:14 GMT
{
"vectorBucketName": "test-vector-bucket",
"indexName":"test-index",
"dataType": "float32",
"dimension": 5,
"distanceMetric": "euclidean",
"metadataConfiguration":{
"nonFilterableMetadataKeys": [
"key_a",
"key_b"
]
}
}
Sample response
HTTP/1.1 200 OK
x-tos-id-2: 797014003c90a9b694003c9-b15a995-1vV80n-CVB-cb-tos-1az-front-azd-vectors-2
x-tos-request-id: 797014003c90a9b694003c9-b15a995-1vV80n-CVB-cb-tos-1az-front-azd-vectors-2
Date: Mon, 10 Dec 2025 12:49:14 GMT
server: TosServer
Content-Length: 0
Last updated: 2026.01.04 14:21:24
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