@langchain/community/dist/tools/bingserpapi.js

Third-party integrations for LangChain.js

import { __exportAll } from "../_virtual/_rolldown/runtime.js";
import { Tool } from "@langchain/core/tools";
import { getEnvironmentVariable } from "@langchain/core/utils/env";
//#region src/tools/bingserpapi.ts
var bingserpapi_exports = /* @__PURE__ */ __exportAll({ BingSerpAPI: () => BingSerpAPI });
/**
* A tool for web search functionality using Bing's search engine. It
* extends the base `Tool` class and implements the `_call` method to
* perform the search operation. Requires an API key for Bing's search
* engine, which can be set in the environment variables. Also accepts
* additional parameters for the search query.
*/
var BingSerpAPI = class extends Tool {
	static lc_name() {
		return "BingSerpAPI";
	}
	/**
	* Not implemented. Will throw an error if called.
	*/
	toJSON() {
		return this.toJSONNotImplemented();
	}
	name = "bing-search";
	description = "a search engine. useful for when you need to answer questions about current events. input should be a search query.";
	key;
	params;
	constructor(apiKey = getEnvironmentVariable("BingApiKey"), params = {}) {
		super(...arguments);
		if (!apiKey) throw new Error("BingSerpAPI API key not set. You can set it as BingApiKey in your .env file.");
		this.key = apiKey;
		this.params = params;
	}
	/** @ignore */
	async _call(input) {
		const headers = { "Ocp-Apim-Subscription-Key": this.key };
		const params = {
			q: input,
			textDecorations: "true",
			textFormat: "HTML"
		};
		const searchUrl = new URL("https://api.bing.microsoft.com/v7.0/search");
		Object.entries(params).forEach(([key, value]) => {
			searchUrl.searchParams.append(key, value);
		});
		const response = await fetch(searchUrl, { headers });
		if (!response.ok) throw new Error(`HTTP error ${response.status}`);
		const results = (await response.json()).webPages.value;
		if (results.length === 0) return "No good results found.";
		return results.map((result) => result.snippet).join(" ");
	}
};
//#endregion
export { BingSerpAPI, bingserpapi_exports };

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