From 6ac85284c2a60d8d55bdb940d1fc7e644812c163 Mon Sep 17 00:00:00 2001
From: zgaetano <zgaetano@wilddragon.net>
Date: Tue, 31 Mar 2026 15:33:48 -0400
Subject: [PATCH] Add wave-mcp/src/index.ts

---
 wave-mcp/src/index.ts | 143 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 wave-mcp/src/index.ts

diff --git a/wave-mcp/src/index.ts b/wave-mcp/src/index.ts
new file mode 100644
index 0000000..5708ab5
--- /dev/null
+++ b/wave-mcp/src/index.ts
@@ -0,0 +1,143 @@
+#!/usr/bin/env node
+/**
+ * Wave Finance MCP Server
+ *
+ * Provides tools for interacting with the Wave Finance GraphQL API,
+ * including businesses, customers, products, invoices, and accounting.
+ *
+ * Environment Variables:
+ *   WAVE_ACCESS_TOKEN  - Wave OAuth2 access token (required)
+ *   TRANSPORT          - 'http' or 'stdio' (default: 'stdio')
+ *   PORT               - HTTP port when TRANSPORT=http (default: 8300)
+ */
+
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { StreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/streamableHttp.js";
+import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
+import express from "express";
+
+import { WaveClient } from "./services/wave-client.js";
+import { registerBusinessTools } from "./tools/businesses.js";
+import { registerCustomerTools } from "./tools/customers.js";
+import { registerProductTools } from "./tools/products.js";
+import { registerInvoiceTools } from "./tools/invoices.js";
+import { registerAccountingTools } from "./tools/accounting.js";
+
+// ── Configuration ─────────────────────────────────────────────────────────────
+
+function getConfig(): { accessToken: string } {
+  const accessToken = process.env.WAVE_ACCESS_TOKEN ?? "";
+
+  if (!accessToken) {
+    console.error(
+      "Missing required environment variable:\n" +
+        "  WAVE_ACCESS_TOKEN  - Wave OAuth2 access token\n\n" +
+        "To obtain a token, see the Wave Developer Portal:\n" +
+        "  https://developer.waveapps.com"
+    );
+    process.exit(1);
+  }
+
+  return { accessToken };
+}
+
+// ── Server Setup ──────────────────────────────────────────────────────────────
+
+function createServer(): { server: McpServer; waveClient: WaveClient } {
+  const config = getConfig();
+  const waveClient = new WaveClient(config);
+
+  const server = new McpServer({
+    name: "wave-mcp-server",
+    version: "1.0.0",
+  });
+
+  // Register tool groups
+  registerAccountingTools(server, waveClient); // user, accounts, transactions, currencies, countries
+  registerBusinessTools(server, waveClient);   // list_businesses, get_business
+  registerCustomerTools(server, waveClient);   // list, get, create, update, delete customers
+  registerProductTools(server, waveClient);    // list, create, update, archive products
+  registerInvoiceTools(server, waveClient);    // list, get, create, approve, send, delete invoices
+
+  console.error("Wave MCP Server initialized with tools:");
+  console.error("  Accounting: wave_get_user, wave_list_accounts, wave_create_transaction, wave_list_currencies, wave_list_countries");
+  console.error("  Businesses: wave_list_businesses, wave_get_business");
+  console.error("  Customers:  wave_list_customers, wave_get_customer, wave_create_customer, wave_update_customer, wave_delete_customer");
+  console.error("  Products:   wave_list_products, wave_create_product, wave_update_product, wave_archive_product");
+  console.error("  Invoices:   wave_list_invoices, wave_get_invoice, wave_create_invoice, wave_approve_invoice, wave_send_invoice, wave_delete_invoice");
+
+  return { server, waveClient };
+}
+
+// ── Transport: stdio ──────────────────────────────────────────────────────────
+
+async function runStdio(): Promise<void> {
+  const { server } = createServer();
+  const transport = new StdioServerTransport();
+  await server.connect(transport);
+  console.error("Wave MCP Server running via stdio");
+}
+
+// ── Transport: HTTP ───────────────────────────────────────────────────────────
+
+async function runHTTP(): Promise<void> {
+  const { server } = createServer();
+  const app = express();
+  app.use(express.json());
+
+  // Health check
+  app.get("/health", (_req, res) => {
+    res.json({ status: "ok", server: "wave-mcp-server", version: "1.0.0" });
+  });
+
+  // MCP endpoint
+  app.post("/mcp", async (req, res) => {
+    const transport = new StreamableHTTPServerTransport({
+      sessionIdGenerator: undefined,
+      enableJsonResponse: true,
+    });
+    res.on("close", () => transport.close());
+    await server.connect(transport);
+    await transport.handleRequest(req, res, req.body);
+  });
+
+  app.get("/mcp", async (_req, res) => {
+    res.writeHead(405).end(
+      JSON.stringify({
+        jsonrpc: "2.0",
+        error: { code: -32000, message: "Method not allowed. Use POST for MCP requests." },
+        id: null,
+      })
+    );
+  });
+
+  app.delete("/mcp", async (_req, res) => {
+    res.writeHead(405).end(
+      JSON.stringify({
+        jsonrpc: "2.0",
+        error: { code: -32000, message: "Method not allowed." },
+        id: null,
+      })
+    );
+  });
+
+  const port = parseInt(process.env.PORT ?? "8300", 10);
+  app.listen(port, () => {
+    console.error(`Wave MCP Server running on http://0.0.0.0:${port}/mcp`);
+  });
+}
+
+// ── Entrypoint ────────────────────────────────────────────────────────────────
+
+const transport = process.env.TRANSPORT ?? "stdio";
+if (transport === "http") {
+  runHTTP().catch((error) => {
+    console.error("Server error:", error);
+    process.exit(1);
+  });
+} else {
+  runStdio().catch((error) => {
+    console.error("Server error:", error);
+    process.exit(1);
+  });
+}