75 lines
2.7 KiB
JavaScript
75 lines
2.7 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.TavilySearchResults = void 0;
|
|
const tools_1 = require("@langchain/core/tools");
|
|
const env_1 = require("@langchain/core/utils/env");
|
|
/**
|
|
* Tool for the Tavily search API.
|
|
*/
|
|
class TavilySearchResults extends tools_1.Tool {
|
|
static lc_name() {
|
|
return "TavilySearchResults";
|
|
}
|
|
constructor(fields) {
|
|
super(fields);
|
|
Object.defineProperty(this, "description", {
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: true,
|
|
value: "A search engine optimized for comprehensive, accurate, and trusted results. Useful for when you need to answer questions about current events. Input should be a search query."
|
|
});
|
|
Object.defineProperty(this, "name", {
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: true,
|
|
value: "tavily_search_results_json"
|
|
});
|
|
Object.defineProperty(this, "maxResults", {
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: true,
|
|
value: 5
|
|
});
|
|
Object.defineProperty(this, "apiKey", {
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: true,
|
|
value: void 0
|
|
});
|
|
Object.defineProperty(this, "kwargs", {
|
|
enumerable: true,
|
|
configurable: true,
|
|
writable: true,
|
|
value: {}
|
|
});
|
|
this.maxResults = fields?.maxResults ?? this.maxResults;
|
|
this.kwargs = fields?.kwargs ?? this.kwargs;
|
|
this.apiKey = fields?.apiKey ?? (0, env_1.getEnvironmentVariable)("TAVILY_API_KEY");
|
|
if (this.apiKey === undefined) {
|
|
throw new Error(`No Tavily API key found. Either set an environment variable named "TAVILY_API_KEY" or pass an API key as "apiKey".`);
|
|
}
|
|
}
|
|
async _call(input, _runManager) {
|
|
const body = {
|
|
query: input,
|
|
max_results: this.maxResults,
|
|
api_key: this.apiKey,
|
|
};
|
|
const response = await fetch("https://api.tavily.com/search", {
|
|
method: "POST",
|
|
headers: {
|
|
"content-type": "application/json",
|
|
},
|
|
body: JSON.stringify({ ...body, ...this.kwargs }),
|
|
});
|
|
const json = await response.json();
|
|
if (!response.ok) {
|
|
throw new Error(`Request failed with status code ${response.status}: ${json.error}`);
|
|
}
|
|
if (!Array.isArray(json.results)) {
|
|
throw new Error(`Could not parse Tavily results. Please try again.`);
|
|
}
|
|
return JSON.stringify(json.results);
|
|
}
|
|
}
|
|
exports.TavilySearchResults = TavilySearchResults;
|