# Pa1m SEO – Bulk Backlink Check

> Pa1m SEO – Bulk Backlink Check is a paid API for AI agents from seo.hypa1m.xyz, paid per call via x402, $6/call, status unknown (last checked 2026-09-14).

Submits a batch of up to 500 URLs for bulk backlink analysis and returns a task ID to poll for results

## Facts

- Endpoint: POST https://seo.hypa1m.xyz/backlinks/check/bulk
- Price: $6/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pa1m-seo-bulk-backlink-check-9953b8ff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6VY8aO3djmJpY0M1E3RTx

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 pa1m-seo-bulk-backlink-check-9953b8ff -d '<json body>'
```

Example prompt: Can you run a bulk backlink check on these 500 URLs and tell me how many inbound links each one has — I want a full breakdown of who is linking to each page?

## When to prefer this

Use this endpoint when you need to analyze backlinks for a large number of URLs simultaneously (up to 500 at a time) and can tolerate an async/polling workflow. Prefer this over single-URL checks when processing bulk SEO audits, reporting across entire sites, or comparing competitors at scale. The $6 USDC flat fee makes it cost-effective for batches of dozens to hundreds of URLs.

## Known failure modes

- Payment not received or insufficient — job not created, payment required error
- Batch size exceeds 500 URLs — request rejected with validation error
- Invalid URL format in the submitted list — partial or full rejection
- Task ID not found when polling — may indicate expired or invalid job
- Timeout on async job — polling may need to be retried after a delay
- Service unavailable — 5xx errors from upstream crawl infrastructure

## How this service works

SEO audit any website — 200 rules across 20 categories: technical health, Core Web Vitals, content quality, AI-GEO signals, accessibility, security headers, structured data, and more. Async job flow: POST /scan/quick or /scan/full → poll GET /status/{job_id} → get JSON result with per-category scores (0–100) and issue lists. Use /brief for an AI action plan, /analyze for free-form SEO questions, or /check/{category} for instant single-category audits.

## Output

Returns a JSON object with a task_id, a poll URL path (/backlinks/status/{task_id}) to check job status, the number of URLs submitted (up to 500), and the amount paid in USD. Once polling returns completed results, the agent receives per-URL backlink data for the entire batch.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "donor_urls": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "maxItems": 500,
   "description": "Donor pages to inspect for links to your domain"
  },
  "target_domains": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Domains to look for, e.g. [\"example.com\"]"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "poll": "/backlinks/status/{task_id}",
  "task_id": "67f542b1e86b8c3b8ffac1a6",
  "paid_usd": 6,
  "submitted": 500
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pa1m-seo-bulk-backlink-check-9953b8ff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from seo.hypa1m.xyz](https://www.zero.xyz/host/seo.hypa1m.xyz/llms.txt)