x402 Image Tools – Watermark / Text Overlay

x402

x402 Image Tools – Watermark / Text Overlay is a paid API for AI agents from 7fg5bxb40m3f0v23.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).

Draws a line of text over an image at a specified position, size, color, and opacity, returning a new image with the watermark applied.

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

Draw a line of text over an image at a corner, an edge or the center, with a size relative to the image width, a color and an opacity.

Output

A JSON object containing a CDN URL to the watermarked image (valid for ~1 hour), output format, width, height, file size in bytes, input file size, and optionally a data URL of the image if it is under 1 MB and inline was requested.

Example use cases

“Watermark all my product photos with '© MyBrand 2025' in white at the bottom-right, 4% font size, 50% opacity — start with this one: https://myshop.com/images/product1.jpg”

Caption overlay for social media

“Add the caption 'Summer Sale – Up to 50% Off' in the center of this banner image https://cdn.example.com/banner.png using a red color (#ff0000) at 80% opacity and 8% font size, output as PNG.”

Confidential label for internal docs

“Put the word 'CONFIDENTIAL' diagonally… actually, place it in the top-left corner of this document screenshot https://files.internal.com/report-preview.png in semi-transparent gray (#888888) at 0.3 opacity and 6% size.”

Technical details

Endpoint

POSThttps://7fg5bxb40m3f0v23.68r.lambda-web.us-east-1.on.aws/v1/watermark?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need to programmatically add a text watermark or annotation to an existing image at a specific position with configurable styling (color, opacity, size). It is the right choice for copyright stamping, branding overlays, caption placement, or confidentiality labels on photos or document screenshots. Prefer it over general image editing pipelines when the only transformation needed is text overlay.

Side effects

Image URL unreachable or not a supported format (JPEG, PNG, WebP, AVIF, GIF, TIFF, SVG) returns an error
Image exceeds 20 MB or 40 megapixel limit
Text longer than 100 characters rejected
Font size outside 1–20% range rejected
Opacity outside 0.05–1 range rejected
Non-hex color value causes a validation error
Payment of 0.003 USDC not received causes 402 Payment Required
Result URL expires after 3600 seconds

Input

Schema · Request body

Field	Type	Description
url	string	https URL of a JPEG, PNG, WebP, AVIF, GIF, TIFF or SVG image (up to 20 MB, 40 megapixels)
size	number	font size in percent of the image width (1-20, default 4)
text	string	the text (up to 100 characters; Latin, Greek, Cyrillic and common symbols)
color	string	hex color (default #ffffff)
format	string	output format (default: the input's)
inline	boolean	also return the image as a data URL when it is at most 1 MB
opacity	number	0.05-1 (default 0.5)
position	string	where (default bottom-right)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "url": "https://dn8i8p8knpn68.cloudfront.net/results/images/3f1c2b9e.webp?Expires=...",
    "bytes": 48213,
    "width": 800,
    "format": "webp",
    "height": 600,
    "expires_in": 3600,
    "input_bytes": 912345
  }
}

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