The Firecrawl Rust SDK is a library that allows you to easily scrape and crawl websites, and output the data in a format ready for use with language models (LLMs). It provides a simple and intuitive interface for interacting with the Firecrawl API.

Installation

To install the Firecrawl Rust SDK, add the following to your Cargo.toml:

[dependencies]
firecrawl = "^0.1"
tokio = { version = "^1", features = ["full"] }

To add it in your codebase.

Usage

First, you need to obtain an API key from firecrawl.dev. Then, you need to initialize the FirecrawlApp like so:

use firecrawl::FirecrawlApp;

#[tokio::main]
async fn main() {
    // Initialize the FirecrawlApp with the API key
    let app = FirecrawlApp::new("fc-YOUR-API-KEY").expect("Failed to initialize FirecrawlApp");

    // ...
}

Scraping a URL

To scrape a single URL, use the scrape_url method. It takes the URL as a parameter and returns the scraped data as a Document.

let scrape_result = app.scrape_url("https://firecrawl.dev", None).await;
match scrape_result {
    Ok(data) => println!("Scrape result:\n{}", data.markdown),
    Err(e) => eprintln!("Scrape failed: {}", e),
}

Scraping with Extract

With Extract, you can easily extract structured data from any URL. You need to specify your schema in the JSON Schema format, using the serde_json::json! macro.

let json_schema = json!({
    "type": "object",
    "properties": {
        "top": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "title": {"type": "string"},
                    "points": {"type": "number"},
                    "by": {"type": "string"},
                    "commentsURL": {"type": "string"}
                },
                "required": ["title", "points", "by", "commentsURL"]
            },
            "minItems": 5,
            "maxItems": 5,
            "description": "Top 5 stories on Hacker News"
        }
    },
    "required": ["top"]
});

let llm_extraction_options = ScrapeOptions {
    formats: vec![ ScrapeFormats::Extract ].into(),
    extract: ExtractOptions {
        schema: json_schema.into(),
        ..Default::default()
    }.into(),
    ..Default::default()
};

let llm_extraction_result = app
    .scrape_url("https://news.ycombinator.com", llm_extraction_options)
    .await;

match llm_extraction_result {
    Ok(data) => println!("LLM Extraction Result:\n{:#?}", data.extract.unwrap()),
    Err(e) => eprintln!("LLM Extraction failed: {}", e),
}

Crawling a Website

To crawl a website, use the crawl_url method. This will wait for the crawl to complete, which may take a long time based on your starting URL and your options.

let crawl_options = CrawlOptions {
    exclude_paths: vec![ "blog/*".into() ].into(),
    ..Default::default()
};

let crawl_result = app
    .crawl_url("https://mendable.ai", crawl_options)
    .await;

match crawl_result {
    Ok(data) => println!("Crawl Result (used {} credits):\n{:#?}", data.credits_used, data.data),
    Err(e) => eprintln!("Crawl failed: {}", e),
}

Crawling asynchronously

To crawl without waiting for the result, use the crawl_url_async method. It takes the same parameters, but it returns a CrawlAsyncRespone struct, containing the crawl's ID. You can use that ID with the check_crawl_status method to check the status at any time. Do note that completed crawls are deleted after 24 hours.

let crawl_id = app.crawl_url_async("https://mendable.ai", None).await?.id;

// ... later ...

let status = app.check_crawl_status(crawl_id).await?;

if status.status == CrawlStatusTypes::Completed {
    println!("Crawl is done: {:#?}", status.data);
} else {
    // ... wait some more ...
}

Map a URL (Alpha)

Map all associated links from a starting URL.

let map_result = app
    .map_url("https://firecrawl.dev", None)
    .await;

match map_result {
    Ok(data) => println!("Mapped URLs: {:#?}", data),
    Err(e) => eprintln!("Map failed: {}", e),
}

Error Handling

The SDK handles errors returned by the Firecrawl API and by our dependencies, and combines them into the FirecrawlError enum, implementing Error, Debug and Display. All of our methods return a Result<T, FirecrawlError>.

Running the Tests with Cargo

To ensure the functionality of the Firecrawl Rust SDK, we have included end-to-end tests using cargo. These tests cover various aspects of the SDK, including URL scraping, web searching, and website crawling.

Running the Tests

To run the tests, execute the following commands:

$ export $(xargs < ./tests/.env)
$ cargo test --test e2e_with_auth

Contributing

Contributions to the Firecrawl Rust SDK are welcome! If you find any issues or have suggestions for improvements, please open an issue or submit a pull request on the GitHub repository.

License

The Firecrawl Rust SDK is open-source and released under the AGPL License.