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 __async = (__this, __arguments, generator) => {
  return new Promise((resolve, reject) => {
    var fulfilled = (value) => {
      try {
        step(generator.next(value));
      } catch (e) {
        reject(e);
      }
    };
    var rejected = (value) => {
      try {
        step(generator.throw(value));
      } catch (e) {
        reject(e);
      }
    };
    var step = (x) => x.done ? resolve(x.value) : Promise.resolve(x.value).then(fulfilled, rejected);
    step((generator = generator.apply(__this, __arguments)).next());
  });
};
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");
function transportFrom(params) {
  return __async(this, null, function* () {
    if (params.transport) return params.transport;
    if (params.serverUrl) {
      const { SSEClientTransport } = yield import("@modelcontextprotocol/sdk/client/sse.js");
      return new SSEClientTransport(URL.parse(params.serverUrl));
    }
    if (params.serverProcess) {
      const { StdioClientTransport } = yield import("@modelcontextprotocol/sdk/client/stdio.js");
      return new StdioClientTransport(params.serverProcess);
    }
    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, (ai) => __async(this, null, function* () {
    const { Client } = yield import("@modelcontextprotocol/sdk/client/index.js");
    const transport = yield transportFrom(params);
    ai.options.model;
    const client = new Client(
      { name: params.name, version: params.version || "1.0.0" },
      { capabilities: {} }
    );
    yield client.connect(transport);
    const capabilties = yield client.getServerCapabilities();
    const promises = [];
    if (capabilties == null ? void 0 : capabilties.tools) promises.push((0, import_tools.registerAllTools)(ai, client, params));
    if (capabilties == null ? void 0 : capabilties.prompts)
      promises.push((0, import_prompts.registerAllPrompts)(ai, client, params));
    if (capabilties == null ? void 0 : capabilties.resources)
      promises.push((0, import_resources.registerResourceTools)(ai, client, params));
    yield 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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