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107 lines
4.2 KiB
Plaintext
107 lines
4.2 KiB
Plaintext
---
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title: "FirecrawlWebSearch"
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id: firecrawlwebsearch
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slug: "/firecrawlwebsearch"
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description: "Search engine using the Firecrawl API."
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---
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# FirecrawlWebSearch
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Search the web and extract content using the Firecrawl API.
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<div className="key-value-table">
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| --- | --- |
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| **Most common position in a pipeline** | Before a [`ChatPromptBuilder`](../builders/chatpromptbuilder.mdx) or right at the beginning of an indexing pipeline. |
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| **Mandatory init variables** | `api_key`: The Firecrawl API key. Can be set with the `FIRECRAWL_API_KEY` env var. |
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| **Mandatory run variables** | `query`: A string with your search query. |
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| **Output variables** | `documents`: A list of Haystack Documents containing the scraped content and metadata. <br /> <br />`links`: A list of strings of resulting URLs. |
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| **API reference** | [Firecrawl Search API](/reference/integrations-firecrawl) |
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| **GitHub link** | https://github.com/deepset-ai/haystack-core-integrations/blob/main/integrations/firecrawl/src/haystack_integrations/components/websearch/firecrawl/firecrawl_websearch.py |
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</div>
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## Overview
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When you give `FirecrawlWebSearch` a query, it uses the Firecrawl Search API to search the web, crawl the resulting pages, and return the structured text as a list of Haystack `Document` objects. It also returns a list of the underlying URLs.
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Because Firecrawl actively scrapes and structures the content of the pages it finds into LLM-friendly formats, you generally don't need an additional component like `LinkContentFetcher` to read the web pages. `FirecrawlWebSearch` handles the retrieval and scraping all in one step.
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`FirecrawlWebSearch` requires a [Firecrawl](https://firecrawl.dev) API key to work. By default, it looks for a `FIRECRAWL_API_KEY` environment variable. Alternatively, you can pass an `api_key` directly during initialization.
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## Usage
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### On its own
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Here is a quick example of how `FirecrawlWebSearch` searches the web based on a query, scrapes the resulting web pages, and returns a list of Documents containing the page content.
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```python
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from haystack_integrations.components.websearch.firecrawl import FirecrawlWebSearch
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from haystack.utils import Secret
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web_search = FirecrawlWebSearch(
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api_key=Secret.from_env_var("FIRECRAWL_API_KEY"),
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top_k=5,
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search_params={"scrape_options": {"formats": ["markdown"]}},
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)
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query = "What is Haystack by deepset?"
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response = web_search.run(query=query)
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for doc in response["documents"]:
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print(doc.content)
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```
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### In a pipeline
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Here is an example of a Retrieval-Augmented Generation (RAG) pipeline where using `FirecrawlWebSearch` to look up an answer. Because Firecrawl returns the actual text of the scraped pages, you can pass its `documents` output directly into the `ChatPromptBuilder` to give the LLM the necessary context.
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```python
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from haystack import Pipeline
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from haystack.utils import Secret
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from haystack.components.builders.chat_prompt_builder import ChatPromptBuilder
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from haystack.components.generators.chat import OpenAIChatGenerator
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from haystack_integrations.components.websearch.firecrawl import FirecrawlWebSearch
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from haystack.dataclasses import ChatMessage
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web_search = FirecrawlWebSearch(
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api_key=Secret.from_env_var("FIRECRAWL_API_KEY"),
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top_k=2,
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search_params={"scrape_options": {"formats": ["markdown"]}},
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)
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prompt_template = [
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ChatMessage.from_system("You are a helpful assistant."),
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ChatMessage.from_user(
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"Given the information below:\n"
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"{% for document in documents %}{{ document.content }}\n{% endfor %}\n"
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"Answer the following question: {{ query }}.\nAnswer:",
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),
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]
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prompt_builder = ChatPromptBuilder(
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template=prompt_template,
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required_variables={"query", "documents"},
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)
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llm = OpenAIChatGenerator(
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api_key=Secret.from_env_var("OPENAI_API_KEY"),
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model="gpt-5-nano",
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)
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pipe = Pipeline()
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pipe.add_component("search", web_search)
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pipe.add_component("prompt_builder", prompt_builder)
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pipe.add_component("llm", llm)
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pipe.connect("search.documents", "prompt_builder.documents")
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pipe.connect("prompt_builder.prompt", "llm.messages")
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query = "What is Haystack by deepset?"
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result = pipe.run(data={"search": {"query": query}, "prompt_builder": {"query": query}})
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print(result["llm"]["replies"][0].text)
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```
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