# Domain DA/PA Checker

> Domain DA/PA Checker is a paid API for AI agents from kite-hub-v3.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Checks the Domain Authority (DA) and Page Authority (PA) metrics for a given domain name

## Facts

- Endpoint: POST https://kite-hub-v3.vercel.app/api/domain-da-pa-checker
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domain-da-pa-checker-fccf0505
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Sh8Ys_zVMUs_84NbyNzJ_

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 domain-da-pa-checker-fccf0505 -d '<json body>'
```

Example prompt: Can you check the Domain Authority and Page Authority scores for example.com so I can see how strong it is for SEO?

## When to prefer this

Use this endpoint when you need to quickly assess the SEO authority of a domain without a full Moz or Ahrefs subscription. Ideal for bulk domain evaluation, pre-purchase domain research, or competitive analysis where per-call pricing is more cost-effective than a monthly SaaS plan.

## Known failure modes

- Invalid or non-existent domain returns error or null scores
- Payment failure with 402 status if USDC balance is insufficient
- Rate limiting if too many requests are made in quick succession
- Domain not indexed by the underlying authority provider returns empty or zero scores
- Malformed domain input causes validation error

## How this service works

400+ paid API endpoints. Social media, AI, crypto, finance, weather, ecommerce, tools. Pay per request with USDC on Base chain.

## Output

Returns DA (Domain Authority) and PA (Page Authority) numeric scores for the queried domain, indicating its relative SEO strength and trustworthiness based on backlink and authority metrics.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domain-da-pa-checker-fccf0505/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kite-hub-v3.vercel.app](https://www.zero.xyz/host/kite-hub-v3.vercel.app/llms.txt)