genkitx-mcp/lib/index.js

A Genkit plugin that provides interoperability between Genkit and Model Context Protocol (MCP). Both client and server use cases are supported.

"use strict";
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var src_exports = {};
__export(src_exports, {
  mcpClient: () => mcpClient,
  mcpServer: () => mcpServer
});
module.exports = __toCommonJS(src_exports);
var import_genkit = require("genkit");
var import_plugin = require("genkit/plugin");
var import_prompts = require("./client/prompts.js");
var import_resources = require("./client/resources.js");
var import_tools = require("./client/tools.js");
var import_server = require("./server.js");
async function transportFrom(params) {
  if (params.transport) return params.transport;
  if (params.serverUrl) {
    const { SSEClientTransport } = await import("@modelcontextprotocol/sdk/client/sse.js");
    return new SSEClientTransport(new URL(params.serverUrl));
  }
  if (params.serverProcess) {
    const { StdioClientTransport } = await import("@modelcontextprotocol/sdk/client/stdio.js");
    return new StdioClientTransport(params.serverProcess);
  }
  if (params.serverWebsocketUrl) {
    const { WebSocketClientTransport } = await import("@modelcontextprotocol/sdk/client/websocket.js");
    let url = params.serverWebsocketUrl;
    if (typeof url === "string") url = new URL(url);
    return new WebSocketClientTransport(url);
  }
  throw new import_genkit.GenkitError({
    status: "INVALID_ARGUMENT",
    message: "Unable to create a server connection with supplied options. Must provide transport, stdio, or sseUrl."
  });
}
function mcpClient(params) {
  return (0, import_plugin.genkitPlugin)(params.name, async (ai) => {
    const { Client } = await import("@modelcontextprotocol/sdk/client/index.js");
    const transport = await transportFrom(params);
    ai.options.model;
    const client = new Client(
      { name: params.name, version: params.version || "1.0.0" },
      { capabilities: {} }
    );
    await client.connect(transport);
    const capabilties = await client.getServerCapabilities();
    const promises = [];
    if (capabilties?.tools) promises.push((0, import_tools.registerAllTools)(ai, client, params));
    if (capabilties?.prompts)
      promises.push((0, import_prompts.registerAllPrompts)(ai, client, params));
    if (capabilties?.resources)
      promises.push((0, import_resources.registerResourceTools)(ai, client, params));
    await Promise.all(promises);
  });
}
function mcpServer(ai, options) {
  return new import_server.GenkitMcpServer(ai, options);
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  mcpClient,
  mcpServer
});
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