# Content Text Similarity Search

Content similarity range search

Endpoint: POST /hub/apps/search/text/mlt
Version: 2025-08-18T18:01:56Z
Security: api_key

## Request fields (application/json):

  - `aid` (string, required)
    Application identifier.

  - `cid` (string)
    Source content id for similarity search.

  - `text` (string)
    Source content text for similarity search.

  - `min` (number)
    Minimum similarity score. The default is 0.80.

  - `max` (number)
    Maximum similarity score. The default is 1.0.

  - `include_doc` (boolean)
    Set to true to include document id for each content hit.

## Response 200 fields (application/json):

  - `status` (object)
    response status

  - `status.success` (boolean)
    Response status

  - `status.code` (integer)
    Response status code

  - `result` (object)
    response body

  - `result.hits` (array)
    List of matched text search results

  - `result.hits.id` (string)
    Matched text ID

  - `result.hits.hash` (string)
    Hash value of matched text

  - `result.hits.score` (number)
    relevance score

## Response 400 fields (application/json):

  - `status` (object)
    response status

  - `status.success` (boolean)
    Response status

  - `status.code` (integer)
    Response status code

  - `error` (object)
    error body

  - `error.cause` (string)
    Cause of error

  - `error.message` (string)
    Error Message