# Strale Accessibility Audit

> Strale Accessibility Audit is a paid API for AI agents from api.strale.io, paid per call via x402, $0.324/call, status unknown (last checked 2026-09-14).

Performs an automated web accessibility audit on a given URL, returning structured findings with a cryptographic audit trail.

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/accessibility-audit
- Price: $0.324/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-accessibility-audit-c4f081a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__eAaum4kkVBHyubYAP97Z

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 strale-accessibility-audit-c4f081a2
```

Example prompt: Can you run an accessibility audit on https://www.example.com and tell me what WCAG violations it has?

## When to prefer this

Choose this endpoint when you need an auditable, tamper-evident accessibility report backed by a cryptographic audit trail — particularly in compliance or legal contexts where proof of testing matters. Prefer it over generic lighthouse-style tools when you need structured JSON output consumable by an AI agent, or when operating in a multi-party workflow where audit provenance is required.

## Known failure modes

- Invalid or unreachable URL returns an error indicating the page could not be fetched
- Private or firewalled URLs inaccessible from Strale's infrastructure will fail
- Malformed URL input causes a 400-level validation error
- Rate limits or payment failures (x402) result in a 402 or 429 response
- Very large or JavaScript-heavy pages may time out

## How this service works

WCAG 2.1 accessibility audit of a URL. Checks color contrast, alt text, form labels, ARIA roles, heading hierarchy, link text, language. Mostly deterministic.

## Output

Returns a structured JSON report of accessibility violations found on the audited URL, including issue categories, affected elements, WCAG rule references, and a cryptographically hashed audit record for tamper-evident provenance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "description": "URL to audit"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "score": {
  "type": "integer"
 },
 "passes": {
  "type": "array"
 },
 "violations": {
  "type": "array"
 },
 "manual_review_needed": {
  "type": "array"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-accessibility-audit-c4f081a2/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)