fix: drop connection/render-triggered events, gate MCP tool calls

app/src/app/api/[owner]/[repo]/mcp/route.ts

@@ -1,5 +1,4 @@
 import { resolveDocsRoute } from "@/lib/docs-routing";
-import { getPostHogClient } from "@/lib/posthog";
 import { BundlerError } from "@/server/docs/bundle";
 import { loadDocsConfigForResolvedSha } from "@/server/docs/source-dataset";
 import { listGitHubDocFiles } from "@/server/github/tree";
@@ -80,16 +79,6 @@ export async function GET(req: Request, context: RouteContext) {
     }
 
     const descriptor = await createMcpDescriptor(context);
-    getPostHogClient()?.capture({
-      distinctId: `${route.owner}/${route.repository}`,
-      event: "mcp:server_view",
-      properties: {
-        owner: route.owner,
-        repository: route.repository,
-        ref: route.ref ?? null,
-        $process_person_profile: false,
-      },
-    });
     return Response.json(descriptor, { status: 200 });
   } catch (error) {
     if (error instanceof BundlerError) {
@@ -114,16 +103,6 @@ export async function POST(req: Request, context: RouteContext) {
       return Response.json({ error: "Not found." }, { status: 404 });
     }
 
-    getPostHogClient()?.capture({
-      distinctId: `${route.owner}/${route.repository}`,
-      event: "mcp:tool_call",
-      properties: {
-        owner: route.owner,
-        repository: route.repository,
-        ref: route.ref ?? null,
-        $process_person_profile: false,
-      },
-    });
     return handleMcpPost(req, context);
   } catch (error) {
     if (error instanceof BundlerError) {

app/src/app/api/agent/route.ts

@@ -326,6 +326,8 @@ export async function POST(req: Request) {
       repository: session.repo,
       provider,
       message_count: messages.length,
+      is_first_message: messages.length === 1,
+      session_id: session.sid,
       $process_person_profile: false,
     },
   });

app/src/app/api/bundle/route.ts

@@ -45,19 +45,6 @@ export async function GET(req: Request) {
       }),
     ]);
 
-    getPostHogClient()?.capture({
-      distinctId: `${input.data.owner}/${input.data.repository}`,
-      event: "docs:bundle_view",
-      properties: {
-        owner: input.data.owner,
-        repository: input.data.repository,
-        ref: input.data.ref ?? null,
-        path: input.data.path,
-        has_agent: hasAgent,
-        $process_person_profile: false,
-      },
-    });
-
     const response = Response.json(
       {
         code: "OK",

app/src/pages/[[...path]].tsx

@@ -339,17 +339,6 @@ export const getServerSideProps = (async ({ params, req, res, query }) => {
         csrfCookiePath,
       ),
     );
-
-    getPostHogClient()?.capture({
-      distinctId: `${route.owner}/${route.repository}`,
-      event: "agent:session_create",
-      properties: {
-        owner: route.owner,
-        repository: route.repository,
-        ref: route.ref ?? null,
-        $process_person_profile: false,
-      },
-    });
   }
 
   getPostHogClient()?.capture({

app/src/server/mcp/server.ts

@@ -2,6 +2,7 @@ import { McpServer } from "@modelcontextprotocol/sdk/server/mcp";
 import { WebStandardStreamableHTTPServerTransport } from "@modelcontextprotocol/sdk/server/webStandardStreamableHttp";
 import * as z from "zod";
 import type { ResolvedDocsRoute } from "@/lib/docs-routing";
+import { getPostHogClient } from "@/lib/posthog";
 import type { Config } from "@/server/config";
 import { ConfigSchema } from "@/server/config/schema";
 import { BundlerError } from "@/server/docs/bundle";
@@ -118,6 +119,20 @@ export async function createMcpDescriptor(context: McpRepoContext) {
 
 async function createMcpServer(context: McpRepoContext) {
   const { route, docList } = context;
+  const posthog = getPostHogClient();
+  const captureToolCall = (tool: string) => {
+    posthog?.capture({
+      distinctId: `${route.owner}/${route.repository}`,
+      event: "mcp:tool_call",
+      properties: {
+        owner: route.owner,
+        repository: route.repository,
+        ref: route.ref ?? null,
+        tool,
+        $process_person_profile: false,
+      },
+    });
+  };
   const [metadata, skillList] = await Promise.all([
     Promise.resolve(getMcpServerMetadata(context)),
     getMcpSkillResources(route),
@@ -213,6 +228,7 @@ async function createMcpServer(context: McpRepoContext) {
       },
     } as unknown as never,
     (async (args: unknown) => {
+      captureToolCall("read_doc_page");
       const { path } = ReadDocToolSchema.parse(args);
 
       try {
@@ -260,6 +276,7 @@ async function createMcpServer(context: McpRepoContext) {
       inputSchema: {},
     } as unknown as never,
     (async (args: unknown) => {
+      captureToolCall("list_doc_files");
       ListDocFilesToolSchema.parse(args ?? {});
 
       return {