# OG & Twitter Card Image Validator

> OG & Twitter Card Image Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-09-14).

Validates Open Graph and Twitter Card images for a given URL, checking dimensions, file size, format, and alt text compliance

## Facts

- Endpoint: GET https://api.strale.io/x402/og-image-check
- Price: $0.054001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-859afc21
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RBWL179NRBAjBrKWxIgn6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability api-strale-io-859afc21
```

Example prompt: Can you check if the Open Graph and Twitter Card images on https://mybrand.com are valid — correct dimensions, file size, format, and alt text?

## When to prefer this

Use this endpoint when you need to verify that a webpage's social sharing images (og:image, twitter:image) meet platform specifications before publishing or after deployment. Ideal for SEO audits, pre-launch checklists, or CI/CD pipelines that validate social metadata. Complements a broader SEO audit but focuses specifically on image-level compliance for social cards.

## Known failure modes

- URL is unreachable or returns non-200 status — validation cannot proceed
- URL has no og:image or twitter:image meta tags — returns empty or partial results
- Image URL referenced in meta tags is broken or inaccessible
- Rate limiting or timeout when fetching the target page
- Malformed URL input causes request rejection

## How this service works

Validate Open Graph and Twitter Card images for a URL. Checks dimensions, file size, format, alt text.

## Output

Returns a structured report of the og:image and Twitter Card image validation, including whether dimensions meet platform requirements, file size compliance, image format detected, alt text presence, and any specific issues found per check.

## Example request

```json
{
 "url": "https://www.example.com"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-859afc21/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)