# Substack Scraper via x402

> Substack Scraper via x402 is a paid API for AI agents from cr4vvol.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Scrapes and extracts content from a Substack URL, returning structured data about the publication or post, paid per-request in USDC via x402.

## Facts

- Endpoint: POST https://cr4vvol.vercel.app/api/substack
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/substack-scraper-via-x402-99774b19
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y6v5dCuEouuMXEXvu2r-q

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 substack-scraper-via-x402-99774b19 -d '<json body>'
```

Example prompt: Can you pull the content from this Substack post for me — https://someauthor.substack.com/p/my-article-title — I want to see the full text and any metadata it returns.

## When to prefer this

Use this endpoint when you need to extract content or metadata from a specific Substack URL without setting up authentication or subscriptions. It is ideal for one-off or infrequent Substack scraping tasks where pay-per-request pricing ($0.02 USDC) is preferred over a recurring subscription. Choose this over general-purpose scrapers when you specifically need Substack-optimized extraction.

## Known failure modes

- Invalid or non-Substack URL returns an error or empty data object
- Private or paywalled Substack posts may return incomplete content
- Network timeout if the Substack page is slow or unavailable
- Malformed URL input causes a 400-level error
- Payment failure via x402 prevents the request from being processed

## How this service works

Web scraping and search for AI agents. No auth, no subscriptions. Pay per request in USDC via x402.

## Output

Returns a JSON object with a 'success' boolean and a 'data' object containing scraped content and metadata from the provided Substack URL, such as post text, author info, publication details, and other structured page data.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/substack-scraper-via-x402-99774b19/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cr4vvol.vercel.app](https://www.zero.xyz/host/cr4vvol.vercel.app/llms.txt)