# ScrapFly Substack Crawler

> ScrapFly Substack Crawler is a paid API for AI agents from scrapfly.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-24).

Scrapes and extracts structured content data from a given Substack URL

## Facts

- Endpoint: POST https://scrapfly.vercel.app/api/crawl/substack?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scrapfly-substack-crawler-a89f4e06
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_L-2maBIIyncmkE3Eytq2F

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 scrapfly-substack-crawler-a89f4e06 -d '<json body>'
```

Example prompt: Can you scrape the content from this Substack post for me: https://example.substack.com/p/my-latest-article — I need the full article text and any metadata you can pull from the page.

## When to prefer this

Use this endpoint when you specifically need to extract content from Substack newsletters or posts. It is purpose-built for Substack's page structure, making it more reliable than a generic web scraper for this platform. Prefer it over general-purpose crawlers when targeting Substack URLs to get cleaner structured output.

## Known failure modes

- Invalid or malformed URL returns failure with success: false
- Substack page behind paywall or login may return incomplete data
- Rate limiting or bot detection on Substack may cause scrape failures
- Non-Substack URLs passed to this endpoint may return unexpected results or errors
- Network timeout if the target page is slow to respond

## How this service works

69 endpoints for data, content generation, and web scraping. Pay per request via x402 on Base chain.

## Output

Returns a JSON object with a 'success' boolean indicating whether the scrape succeeded, and a 'data' object containing the extracted page content and structured data from the Substack URL, including article text, metadata, and any other scrapeable fields available on the page.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scrapfly-substack-crawler-a89f4e06/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scrapfly.vercel.app](https://www.zero.xyz/host/scrapfly.vercel.app/llms.txt)