Similarity

Compute the cosine similarity between two stored vectors.

POST /v1/collections/{name}/similarity

Request

Headers:

x-api-key: your-api-key
Content-Type: application/json

Path Parameters:

Parameter	Description
`name`	Collection name

Query Parameters:

Parameter	Type	Required	Description
`id1`	string	✅	External ID of the first vector
`id2`	string	✅	External ID of the second vector

curl -X POST "http://localhost:8000/v1/collections/articles/similarity?id1=doc-1&id2=doc-2" \
  -H "x-api-key: test-key"

{
  "status": "success",
  "data": {
    "id1": "doc-1",
    "id2": "doc-2",
    "similarity": 0.9234
  }
}

Code	Reason
`404`	Collection or one of the vectors not found
`401`	Missing or invalid API key