---
title: "Alt-text audit for any page"
method: GET
path: "/api/seo/alt-check"
tags: ["SEO & Publishing"]
---

# Alt-text audit for any page

`GET /api/seo/alt-check`

## Request

- Base URL: `https://api.webbersites.com`
- URL: `https://api.webbersites.com/api/seo/alt-check`
- Auth: API key in header `X-PAYMENT`

Alt-text audit for any page: finds images with missing alt attributes, flags filename-as-alt and generic alt text, over-long alt, unlabeled svg[role=img], image-map areas and image inputs without alternatives. Counts decorative alt="" separately. For SEO and accessibility agents.

Price: $0.001 per call, paid in USDC via the x402 protocol (see the x402 security scheme).

## Query parameters

- `url` string, required

## Response `200`

Success

- object
  - `images_total` number
  - `missing_alt` number
  - `low_quality_alt` number
  - `issues` unknown[]
    - unknown

## Other responses

- `402`: Payment required — the response body lists accepted payment methods (amount, asset, network, pay-to address). Retry the request with a signed X-PAYMENT header.

---

[API](https://skmtc.dev/webbersites/apis/webbersites-x402-data-api.md) · [All operations](https://skmtc.dev/webbersites/apis/webbersites-x402-data-api/llms.txt) · [OpenAPI document](https://skmtc.dev/webbersites/apis/webbersites-x402-data-api/revisions/c14a76c67a94?raw)