​
Installation

To install the Firecrawl Go SDK, you can use go get:

Go
go get github.com/mendableai/firecrawl-go

​
Usage

  1. Get an API key from firecrawl.dev
  2. Set the API key as a parameter to the FirecrawlApp struct.
  3. Set the API URL and/or pass it as a parameter to the FirecrawlApp struct. Defaults to https://api.firecrawl.dev.
  4. Set the version and/or pass it as a parameter to the FirecrawlApp struct. Defaults to v1.

Here’s an example of how to use the SDK with error handling:

Go
import (
	"fmt"
	"log"
	"github.com/google/uuid"
	"github.com/mendableai/firecrawl-go"
)

func ptr[T any](v T) *T {
	return &v
}

func main() {
	// Initialize the FirecrawlApp with your API key
	apiKey := "fc-YOUR_API_KEY"
	apiUrl := "https://api.firecrawl.dev"
	version := "v1"

	app, err := firecrawl.NewFirecrawlApp(apiKey, apiUrl, version)
	if err != nil {
		log.Fatalf("Failed to initialize FirecrawlApp: %v", err)
	}

  // Scrape a website
  scrapeStatus, err := app.ScrapeUrl("https://firecrawl.dev", firecrawl.ScrapeParams{
    Formats: []string{"markdown", "html"},
  })
  if err != nil {
    log.Fatalf("Failed to send scrape request: %v", err)
  }

  fmt.Println(scrapeStatus)

	// Crawl a website
  idempotencyKey := uuid.New().String() // optional idempotency key
  crawlParams := &firecrawl.CrawlParams{
		ExcludePaths: []string{"blog/*"},
		MaxDepth:     ptr(2),
	}

	crawlStatus, err := app.CrawlUrl("https://firecrawl.dev", crawlParams, &idempotencyKey)
	if err != nil {
		log.Fatalf("Failed to send crawl request: %v", err)
	}

	fmt.Println(crawlStatus) 
}

​
Scraping a URL

To scrape a single URL with error handling, use the ScrapeURL method. It takes the URL as a parameter and returns the scraped data as a dictionary.

Go
// Scrape a website
scrapeResult, err := app.ScrapeUrl("https://firecrawl.dev", map[string]any{
  "formats": []string{"markdown", "html"},
})
if err != nil {
  log.Fatalf("Failed to scrape URL: %v", err)
}

fmt.Println(scrapeResult)

​
Crawling a Website

To crawl a website, use the CrawlUrl method. It takes the starting URL and optional parameters as arguments. The params argument allows you to specify additional options for the crawl job, such as the maximum number of pages to crawl, allowed domains, and the output format.

Go
crawlStatus, err := app.CrawlUrl("https://firecrawl.dev", map[string]any{
  "limit": 100,
  "scrapeOptions": map[string]any{
    "formats": []string{"markdown", "html"},
  },
})
if err != nil {
  log.Fatalf("Failed to send crawl request: %v", err)
}

fmt.Println(crawlStatus)

​
Checking Crawl Status

To check the status of a crawl job, use the CheckCrawlStatus method. It takes the job ID as a parameter and returns the current status of the crawl job.

Go
// Get crawl status
crawlStatus, err := app.CheckCrawlStatus("<crawl_id>")

if err != nil {
  log.Fatalf("Failed to get crawl status: %v", err)
}

fmt.Println(crawlStatus)

​
Map a Website

Use MapUrl to generate a list of URLs from a website. The params argument let you customize the mapping process, including options to exclude subdomains or to utilize the sitemap.

Go
// Map a website
mapResult, err := app.MapUrl("https://firecrawl.dev", nil)
if err != nil {
  log.Fatalf("Failed to map URL: %v", err)
}

fmt.Println(mapResult)

​
Error Handling

The SDK handles errors returned by the Firecrawl API and raises appropriate exceptions. If an error occurs during a request, an exception will be raised with a descriptive error message.

NodeRust