Update segments¶

Updates the contents of the specified section. Version baselines are used to avoid overwriting newer modifications.

PATCH https://moi.matrixorigin.cn/newmoi/semantic-models/{model_id}/sources/{source_row_id}/segments/{segment_id}

Preparation before calling¶

First query the document details, and obtain the current segment version ID and index version as the baseline. Prepare a personal access token and target workspace ID that has access to the target workspace.

The example below uses:

$AI_STUDIO_API_KEY: The actual personal access token, passed through the X-API-Key Header.
$WORKSPACE_ID: Target workspace ID, passed through X-Workspace-ID Header.
$MODEL_ID: Knowledge Base ID.
$SOURCE_ROW_ID: Source record ID.
$SEGMENT_ID: Segment ID to update.

Request example¶

curl -X PATCH "https://moi.matrixorigin.cn/newmoi/semantic-models/$MODEL_ID/sources/$SOURCE_ROW_ID/segments/$SEGMENT_ID" \
  -H "X-API-Key: $AI_STUDIO_API_KEY" \
  -H "X-Workspace-ID: $WORKSPACE_ID" \
  -H 'Content-Type: application/json' \
  -d '{
    "base_segment_version_id": "<SEGMENT_VERSION_ID>",
    "base_index_version": <INDEX_VERSION>,
    "content": "<SEGMENT_CONTENT>"
  }'

Path parameters¶

Parameters	Type	Description
`model_id`	integer	Knowledge base ID.
`source_row_id`	string	Source record ID.
`segment_id`	string	The segment ID to update.

Request body¶

Submit the source’s current version baseline, and the text, OCR text, or image description to be updated.

Field	Type	Required	Description
`base_segment_version_id`	string	Yes	The current segment version ID read before the call.
`base_index_version`	integer	Yes	The current index version read before the call.
`content`	string	No	The updated text content.
`ocr_text`	string	No	Updated OCR text.
`image_description`	string	No	Updated image description.

Successful response¶

Returns 200 and the updated source document snapshot on success.

{
  "code": "OK",
  "msg": "OK",
  "data": {
    "document": {
      "source": {
        "row_id": "src_01",
        "model_id": 401
      },
      "segment_status": {
        "available": true,
        "total": 2
      },
      "segment_versions": [
        {
          "version_id": "ver_02",
          "current": true,
          "chunk_count": 2
        }
      ],
      "segments": [
        {
          "segment_id": "seg_01",
          "segment_type": "text",
          "level": "chunk",
          "content": "更新后的文本",
          "enabled": true
        }
      ]
    }
  }
}

The response fields are as follows.

Field	Type	Description
`code`	string	`OK` on success.
`msg`	string	`OK` on success.
`data.document`	object	Snapshot of the updated source document.
`data.document.source.row_id`	string	Source record ID.
`data.document.segment_status`	object	Current segment availability status and total number.
`data.document.segment_versions[].version_id`	string	Updated segment version ID.
`data.document.segment_versions[].current`	boolean	Whether it is the current segmented version.
`data.document.segments[].segment_id`	string	Segment ID.
`data.document.segments[].content`	string	Updated segmented text; may be omitted if content is not returned.
`data.document.segments[].enabled`	boolean	Whether the segment participates in retrieval.

In field paths, [] means each item in an array. For example, data.document.segment_versions[].version_id is the version_id field of each item in data.document.segment_versions.

Error response¶

{
  "code": "ErrConflict",
  "msg": "segment version conflict",
  "data": null
}

Common HTTP errors¶

HTTP status code	error code	Common causes	Recommended actions
`400`	`ErrParamInvalid`	The path ID, request body, or staging version baseline is invalid.	Submit using the current version information after re-reading the document.
`401`	`ErrUnauthorized`	The API Key is invalid or has expired.	Check API Key.
`403`	`ErrForbidden`	The caller does not have permission to update this source.	Check workspace and object authorization.
`404`	`ErrNotFound`	The knowledge base, source, or segment does not exist or is not visible to the current caller.	Reread document confirmation ID.
`409`	`ErrConflict`	The current version has changed and the service refuses to write.	Merge changes after reading the latest document and try again.
`500`	`ErrServer`	The service failed to update the segment.	Keep the desensitized response information and try again.

Follow-up operations¶

Query document details to confirm the update result.

Last updated on Sep 3, 2026