# Add Watermark

> Add a text watermark to any video — simple brand protection for generated or user content.

- **Provider**: replicate
- **Model ID**: charlesmccarthy/addwatermark
- **Category**: utilities
- **Credits**: 1 per request
- **Pricing Type**: fixed

## API Endpoint

Base URL: https://api.core.today/v1

### Create Prediction
POST /predictions

### Get Status
GET /predictions/{job_id}

### Cancel
DELETE /predictions/{job_id}

## Authentication

Header: `X-API-Key: YOUR_API_KEY`

## Input Parameters

- `size` (integer, optional): Size of font (Default: `40`; Range: min: 1, max: 500)
- `video` (string, **required**): Input video
- `watermark` (string, optional): Watermark Text (Default: `FULLJOURNEY.AI`)

## Example Request

```json
{
  "model": "charlesmccarthy/addwatermark",
  "input": {
    "size": 40,
    "video": "https://replicate.delivery/pbxt/JzweHYSSY69C9uUq2wAcqX3suV9zdL3C6Ujk2hrxynOJ0JHm/vidswap600883.mp4",
    "watermark": "FULLJOURNEY.AI"
  }
}
```

## Response Format

```json
{
  "job_id": "abc123",
  "status": "pending",
  "provider": "replicate",
  "model": "black-forest-labs/flux-schnell",
  "created_at": "2026-01-01T00:00:00Z",
  "result": null,
  "error": null
}
```

Status values: `pending`, `processing`, `completed`, `failed`, `cancelled`

## Usage Flow

1. POST /predictions with model and input → receive job_id
2. Poll GET /predictions/{job_id} until status is `completed` or `failed`
3. Result contains output URL(s) or data

## Output Type

url

## Tags

watermark, video-editing, branding, utilities

## Documentation

https://replicate.com/charlesmccarthy/addwatermark