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

# Plagiarism Detection

> Check text for potential plagiarism against online content

## POST /

Check text for potential plagiarism by comparing it against a vast database of online content.

```
POST https://plagiarism.api.pangram.com
```

### Request

<ParamField body="text" type="string" required>
  The input text to check for plagiarism.
</ParamField>

### Response

<ResponseField name="text" type="string">
  The input text that was checked.
</ResponseField>

<ResponseField name="plagiarism_detected" type="boolean">
  Whether plagiarism was detected in the text.
</ResponseField>

<ResponseField name="plagiarized_content" type="array">
  A list of detected plagiarized content, including source URLs and matched text.

  <Expandable title="Plagiarized content object">
    <ResponseField name="source_url" type="string">
      The URL of the source where the match was found.
    </ResponseField>

    <ResponseField name="matched_text" type="string">
      The text that matched the source.
    </ResponseField>

    <ResponseField name="similarity_score" type="float">
      <Tooltip tip="A value from 0 to 1 indicating how closely the text matches the source. Higher values mean a closer match.">Similarity score</Tooltip> for the match (0.0–1.0).
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="total_sentences" type="integer">
  Total number of sentences in the input text.
</ResponseField>

<ResponseField name="plagiarized_sentences" type="integer">
  Number of sentences that were detected as plagiarized.
</ResponseField>

<ResponseField name="percent_plagiarized" type="float">
  <Tooltip tip="The proportion of input sentences that matched existing online content, expressed as a percentage (0–100).">Percentage</Tooltip> of the text that was detected as plagiarized.
</ResponseField>

### Example

<CodeGroup>
  ```bash cURL theme={null}
  curl -X POST https://plagiarism.api.pangram.com \
    -H "Content-Type: application/json" \
    -H "x-api-key: your_api_key_here" \
    -d '{
      "text": "The text to check for plagiarism"
    }'
  ```

  ```python Python theme={null}
  from pangram import Pangram

  pangram_client = Pangram()
  result = pangram_client.check_plagiarism("The text to check for plagiarism")
  ```
</CodeGroup>

**Example Response**

```json theme={null}
{
  "text": "The text to check for plagiarism",
  "plagiarism_detected": true,
  "plagiarized_content": [
    {
      "source_url": "https://example.com/source",
      "matched_text": "The text to check for plagiarism",
      "similarity_score": 0.95
    }
  ],
  "total_sentences": 1,
  "plagiarized_sentences": 1,
  "percent_plagiarized": 100.0
}
```