feat: add mode detection for npx and local execution in MCP tracking

Author: tech-sushant

src/lib/instrumentation.ts

@@ -1,6 +1,7 @@
 import logger from "../logger.js";
 import config from "../config.js";
 import { createRequire } from "module";
+import { isRunningViaNpx } from "./utils.js";
 const require = createRequire(import.meta.url);
 const packageJson = require("../../package.json");
 import axios from "axios";
@@ -12,6 +13,7 @@ interface MCPEventPayload {
     tool_name: string;
     mcp_client: string;
     success?: boolean;
+    mode?: string;
     error_message?: string;
     error_type?: string;
   };
@@ -58,6 +60,12 @@ export function trackMCP(
       error instanceof Error ? error.constructor.name : "Unknown";
   }
 
+  if (isRunningViaNpx()) {
+    event.event_properties.mode = "npx";
+  } else {
+    event.event_properties.mode = "local";
+  }
+
   axios
     .post(instrumentationEndpoint, event, {
       headers: {

src/lib/utils.ts

@@ -1,4 +1,6 @@
 import sharp from "sharp";
+import path from "path";
+import { fileURLToPath } from "url";
 
 export function sanitizeUrlParam(param: string): string {
   // Remove any characters that could be used for command injection
@@ -34,3 +36,10 @@ export async function assertOkResponse(response: Response, action: string) {
     );
   }
 }
+
+export function isRunningViaNpx() {
+  const scriptPath = fileURLToPath(import.meta.url);
+  const normalizedPath = path.normalize(scriptPath);
+  const npxPattern = path.sep + "_npx" + path.sep;
+  return normalizedPath.includes(npxPattern);
+}