beleg.bot MCP Server

1. Erstelle die Datei beleg-mcp.js:

#!/usr/bin/env node
const https = require("https");
const readline = require("readline");
const fs = require("fs");

const rl = readline.createInterface({ input: process.stdin, terminal: false });

rl.on("line", (line) => {
  if (!line.trim()) return;

  let parsed;
  try { parsed = JSON.parse(line); } catch (e) { return; }

  const isNotification = parsed.id === undefined;

  if (parsed?.method === "tools/call" && parsed.params?.name === "create_receipt") {
    const args = parsed.params.arguments;
    if (args?.local_image_path) {
      try {
        const ext = args.local_image_path.split(".").pop().toLowerCase();
        const mimeMap = {
          jpg: "image/jpeg", jpeg: "image/jpeg", png: "image/png",
          gif: "image/gif",  webp: "image/webp",  bmp: "image/bmp",
          tiff: "image/tiff", tif: "image/tiff",
          heic: "image/heic", heif: "image/heif", avif: "image/avif",
          pdf: "application/pdf",
        };
        args.local_image_base64 = fs.readFileSync(args.local_image_path).toString("base64");
        args.local_image_mime = mimeMap[ext] || "image/jpeg";
        args.local_image_ext = ext || "jpg";
        line = JSON.stringify(parsed);
      } catch (e) {
        process.stderr.write(`[beleg-mcp] Bild konnte nicht gelesen werden: ${e.message}\n`);
      }
    }
  }

  const payloadBuffer = Buffer.from(line, "utf8");
  const req = https.request({
    hostname: "beleg.bot", path: "/api/mcp", method: "POST",
    headers: {
      "Content-Type": "application/json",
      "Authorization": "Bearer DEIN_API_KEY",
      "Content-Length": payloadBuffer.length,
    }
  }, (res) => {
    let data = "";
    res.on("data", chunk => data += chunk);
    res.on("end", () => {
      if (isNotification) return;
      process.stdout.write(data.trim() || JSON.stringify({
        jsonrpc: "2.0", id: parsed.id,
        error: { code: -32603, message: "Empty response from server" }
      }) + "\n");
    });
  });

  req.setTimeout(15000, () => { req.destroy(); });
  req.on("error", (e) => process.stderr.write(`[beleg-mcp] Netzwerkfehler: ${e.message}\n`));
  req.write(payloadBuffer);
  req.end();
});