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

Third-party integrations for LangChain.js

const require_rolldown_runtime = require('../_virtual/rolldown_runtime.cjs');
const __langchain_core_utils_env = require_rolldown_runtime.__toESM(require("@langchain/core/utils/env"));
const __langchain_core_tools = require_rolldown_runtime.__toESM(require("@langchain/core/tools"));

//#region src/tools/bingserpapi.ts
var bingserpapi_exports = {};
require_rolldown_runtime.__export(bingserpapi_exports, { 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 __langchain_core_tools.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 = (0, __langchain_core_utils_env.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 res = await response.json();
		const results = res.webPages.value;
		if (results.length === 0) return "No good results found.";
		const snippets = results.map((result) => result.snippet).join(" ");
		return snippets;
	}
};

//#endregion
exports.BingSerpAPI = BingSerpAPI;
Object.defineProperty(exports, 'bingserpapi_exports', {
  enumerable: true,
  get: function () {
    return bingserpapi_exports;
  }
});
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