Tanod Images

imagepeek: add a text watermark to an image

image_watermark

Read-onlyIdempotent

imagepeek: Add a text watermark to an image. Returns the image with a text watermark (1-200 printable characters, DejaVu Sans Mono) at one of 9 positions, or tiled in a staggered grid, with opacity, font_size (default 5% of the short side), color, angle and margin; text larger than the image is shrunk to fit. Input: url or image_base64, text, optional position, opacity, font_size, color, angle, tile, margin, optional format, quality and auto_orient. Reads PNG, JPEG, WebP, GIF, TIFF, BMP, ICO and AVIF; other formats and images over 40 megapixels are refused (not charged). Output: base64 data_base64, without EXIF, GPS, XMP or IPTC; over 15 MB or 50 megapixels is a 413 (not charged). Images are never logged or stored. Typically 0.5-2 s. Price: USD 0.002. Free: 3 imagepeek calls per IP per UTC day.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`url`	No	Public http(s) URL of the image (at most 10 MB; private, internal and IP-literal hosts are refused); or use image_base64.
`text`	Yes	1-200 printable characters.
`tile`	No	A staggered grid (at most 2,500 marks).
`angle`	No	Text rotation in degrees, clockwise (-180 to 180, default 0).
`color`	No	Text colour as #rrggbb or #rrggbbaa (default #ffffff).	#ffffff
`format`	No	Output format (default: the input's; ICO in, PNG out).
`margin`	No	Pixels from the edge (default half the font size, at least 4); with tile, the gap between marks.
`opacity`	No	0 (invisible) to 1 (opaque); default 0.5.
`quality`	No	Encoder quality 1-100 (lossy formats).
`position`	No	Single mark's place: center, top, bottom, left, right, top-left, top-right, bottom-left or bottom-right (default).	bottom-right
`font_size`	No	Default: 5% of the short side.
`auto_orient`	No	Apply the EXIF orientation first.
`image_base64`	No	The image as standard or url-safe base64 (at most 10 MB decoded; a data:image/...;base64, prefix is fine); or use url.

Output Schema

TableJSON Schema

Name	Required	Description
`font`	No
`bytes`	No
`error`	No	Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object.
`input`	No
`marks`	No
`notes`	No
`width`	No
`format`	No
`height`	No
`source`	No
`final_url`	No
`font_size`	No
`operation`	No
`source_url`	No
`data_base64`	No
`content_type`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed7 schema fields changedOct 8, 2026

addedInput schema / properties / angle / description

Added value: +"Text rotation in degrees, clockwise (-180 to 180, default 0)."

addedInput schema / properties / color / description

Added value: +"Text colour as #rrggbb or #rrggbbaa (default #ffffff)."

addedInput schema / properties / margin / description

Added value: +"Pixels from the edge (default half the font size, at least 4); with tile, the gap between marks."

addedInput schema / properties / opacity / description

Added value: +"0 (invisible) to 1 (opaque); default 0.5."

addedInput schema / properties / position / description

Added value: +"Single mark's place: center, top, bottom, left, right, top-left, top-right, bottom-left or bottom-right (default)."

changedInput schema / properties / url / description

Previous value: -"Public http(s) URL of the image (at most 10 MB); or use image_base64."New value: +"Public http(s) URL of the image (at most 10 MB; private, internal and IP-literal hosts are refused); or use image_base64."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "bytes": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "content_type": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "data_base64": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "error": {
+      "description": "Only on an error result: an object {code, message}, or the reason string of an x402 PaymentRequired object."
+    },
+    "final_url": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "font": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "font_size": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "format": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "height": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "input": {
+      "properties": {
+        "animated": {
+          "type": [
+            "boolean",
+            "null"
+          ]
+        },
+        "bytes": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "format": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "frames": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "has_alpha": {
+          "type": [
+            "boolean",
+            "null"
+          ]
+        },
+        "height": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "width": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        }
+      },
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "marks": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    },
+    "notes": {
+      "items": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "type": [
+        "array",
+        "null"
+      ]
+    },
+    "operation": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "source": {
+      "type": [
+        "object",
+        "null"
+      ]
+    },
+    "source_url": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "width": {
+      "type": [
+        "integer",
+        "null"
+      ]
+    }
+  },
+  "type": "object"
+}

First observedOct 8, 2026

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