ImageMeta SEO Metadata Writer

x402

ImageMeta SEO Metadata Writer is a paid API for AI agents from imagemeta.kaneky.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-15).

Embeds SEO metadata fields (title, alt, author, keywords, copyright, description) into a JPEG, PNG, or WebP image without re-encoding it, returning the modified image.

Price / call$0.03

Seller volume →—

Success—

StatusUnknown

How this service works

Write SEO metadata into a JPEG, PNG or WebP image and return the modified image. The picture is never re-encoded and existing metadata of the same kind is replaced, not duplicated. Paid per successful call over x402: the first attempt answers HTTP 402 with the price; a failed call is not charged.

Output

The modified image file (JPEG, PNG, or WebP) is returned with the specified SEO metadata fields embedded directly into it. The image pixel data is never re-encoded, so there is no quality loss. Any previously existing metadata of the same types is replaced rather than duplicated.

Example use cases

SEO-tag product images before upload

“I have a PNG of our new running shoe — base64 encoded — and I need to embed the SEO fields before we push it to the site: title 'Blue Trail Running Shoe', alt 'Blue lightweight trail running shoe on white background', keywords 'running shoe, trail, blue, lightweight', author 'SportsBrand', copyright '© 2024 SportsBrand Inc', description 'Ultralight trail running shoe designed for rugged terrain'.”

“I'm about to publish this WebP photo on our news site; can you write the metadata into the image so that author is 'Carlos Rivera', copyright is '© 2024 Rivera Photography', and title is 'Sunset Over the Bay'? Here's the image in base64.”

Accessibility metadata for image library

“We have a JPEG in our media library that's missing alt text and a description — the image is base64 encoded. Please embed alt text 'Graph showing quarterly revenue growth from Q1 to Q4 2023' and description 'Bar chart of quarterly revenue, rising from $2M to $5M over 2023'.”

Technical details

Endpoint

POSThttps://imagemeta.kaneky.dev/api/write_metadata?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need to embed SEO or descriptive metadata (title, alt, keywords, author, copyright, description) directly into an image file without re-encoding or degrading image quality. It is ideal for pre-publish workflows that require standards-compliant image metadata, digital asset management pipelines, or accessibility tagging. Prefer this over server-side CMS metadata fields when the metadata must travel with the image file itself.

Side effects

Invalid or malformed base64 image string — returns an error indicating the image could not be decoded
Unsupported image format (not JPEG, PNG, or WebP) — returns an error
HTTP 402 on first attempt with x402 payment required — agent must handle payment and retry
Missing required fields — call may succeed with partial metadata or return a validation error
Image too large — may time out or return a size-limit error

Input

Schema · Request body

Field	Type	Description
alt	string
title	string
author	string
keywords	string
copyright	string
description	string
image_base64	string

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