FastAF lets a RAG pipeline search the web (`/x402/v1/serp`, $0.003) and fetch a single public page (`/x402/v1/scrape`, $0.005) per call, so you feed fresh content to your model without operating your own browser infrastructure.

## How it works

1.  Search with `/x402/v1/serp` (MCP `google_search`).
2.  Fetch the pages you need with `/x402/v1/scrape` (MCP `scrape_url`).
3.  Chunk, embed and index them in your vector store.

For videos, `/x402/v1/youtube` (MCP `youtube_transcript`) returns transcripts; for papers, `/x402/v1/scholar`.

## Honest comparison

FastAF scrapes one page per call and does not crawl or map entire sites. If you need full-site crawling to markdown, Firecrawl is the better fit (see the [FastAF vs Firecrawl comparison](/compare/firecrawl/)).

## Pricing

**Pricing:** 500 free credits every month after email verification; x402 pay-per-call from $0.003; optional prepaid credit packs from $10 for 20,000 credits, without expiry.

Pricing source: [FastAF OpenAPI](https://api.fastaf.co/openapi.json), read October 27, 2026. Live payment challenges are authoritative.

## Does FastAF render JavaScript?

JavaScript rendering is supported: call /v1/scrape with dynamic=true (5 credits), with optional wait= in milliseconds (0-35000). wait does not enable rendering by itself. The x402 scrape endpoint currently costs $0.005 per successful call for both default and dynamic=true requests. challenge\_mode=true is a separate rendering mode (10 credits); do not combine it with dynamic=true, premium=true or country. Heavier combinations and AI extraction may require API-key billing.

## How should Markdown enter an LLM workflow?

Request scrape with url and formats=markdown. Keep the source URL and retrieval time, split long documents into chunks and treat page instructions as untrusted content. When you need named fields rather than a whole page, the [Markdown and JSON Schema output reference](/docs/token-efficient-web-data/) shows `/v1/extract` and the other compact formats.

## What should you validate?

Check returned fields before using them in an agent decision. Missing fields are not evidence of zero values; preserve provenance and use bounded retries.

## How do you make a real request?

This example calls [Web Scraping API](/apis/web-scraping-api/) using its documented input. Save the API key from the signup email, confirm your email and set FASTAF\_API\_KEY in your server environment.

```
curl --fail-with-body -H "Authorization: Bearer $FASTAF_API_KEY" 'https://api.fastaf.co/v1/scrape?url=https%3A%2F%2Fexample.com%2F&formats=markdown'
```

```
# pip install fastaf-sdk
import os
from fastaf import FastAF

with FastAF(os.environ["FASTAF_API_KEY"]) as client:
    data = client.request("scrape", {"url":"https://example.com/","formats":"markdown"})
    print(data)
```

Markdown response text for formats=markdown, not a JSON wrapper. HTML is the default; links/images formats return JSON and binary targets return bytes.

The example costs 1 credits after the trial. Alternatively, this endpoint costs $0.005 per successful x402 call at the default configuration; FastAF x402 calls start at $0.003. These are separate billing modes.

For x402, request the same parameters under `/x402/v1/scrape` without an API key, validate the live PAYMENT-REQUIRED challenge, then sign and retry with a payment-aware client. A bare curl request returns HTTP 402 and does not pay; unsupported higher-cost options require API-key billing.

## Frequently asked questions

### Can FastAF crawl a whole website?

No, only single pages. Use a crawler like Firecrawl for full sites.

### Does it work with LangChain or LlamaIndex?

Any framework that can call HTTP or MCP tools can use it; see the docs.

### Can I get YouTube transcripts?

Yes, via \`/x402/v1/youtube\` at $0.005 per call.

### Does FastAF support JavaScript rendering?

JavaScript rendering is supported: call /v1/scrape with dynamic=true (5 credits), with optional wait= in milliseconds (0-35000). wait does not enable rendering by itself. The x402 scrape endpoint currently costs $0.005 per successful call for both default and dynamic=true requests. challenge\_mode=true is a separate rendering mode (10 credits); do not combine it with dynamic=true, premium=true or country. Heavier combinations and AI extraction may require API-key billing.

### How much does the example cost?

The API-key example uses 1 credits per successful call after the trial. This endpoint has a default x402 price of $0.005 per successful call in USDC on Base; the live payment challenge is authoritative.

### Does the SDK automatically pay an HTTP 402?

No. The API-key SDK does not sign wallet payments; x402 requires an explicitly configured payment-aware client and a funded wallet.

## Try it on your own request

500 free credits every month after email verification, no card.

[Start free](/signup/)

## Related

*   [scraping API reference](/apis/web-scraping-api/)
*   [how it compares to Firecrawl](/compare/firecrawl/)
*   [Amazon Price Monitoring API for AI Agents](/use-cases/scrape-amazon-prices-ai-agent/)