diff --git a/packages/backend/src/adapters/adapters.service.spec.ts b/packages/backend/src/adapters/adapters.service.spec.ts
index 3bede6e9..ff83bd29 100644
--- a/packages/backend/src/adapters/adapters.service.spec.ts
+++ b/packages/backend/src/adapters/adapters.service.spec.ts
@@ -239,7 +239,10 @@ describe('AdaptersService install — a base URL variable without https://', ()
         // The import probe looks the connector up; nothing found = no probe.
         findUnique: jest.fn().mockResolvedValue(null),
       },
-      mcpTool: { create: jest.fn().mockResolvedValue({}) },
+      mcpTool: {
+        create: jest.fn().mockResolvedValue({}),
+        createMany: jest.fn(async ({ data }: any) => ({ count: data.length })),
+      },
     };
     const service = new AdaptersService(
       prisma as any,
diff --git a/packages/backend/src/adapters/adapters.service.ts b/packages/backend/src/adapters/adapters.service.ts
index f948ae42..473fa9d2 100644
--- a/packages/backend/src/adapters/adapters.service.ts
+++ b/packages/backend/src/adapters/adapters.service.ts
@@ -464,29 +464,41 @@ export class AdaptersService {
       }
     }
 
-    for (const tool of toolsToCreate) {
-      try {
-        await this.prisma.mcpTool.create({
-          data: {
-            connectorId: connector.id,
-            name: tool.name,
-            description: tool.description,
-            isEnabled: tool.enabled !== false,
-            // Seed the proxy preference from the adapter spec (default off).
-            useProxy: tool.useProxy === true,
-            parameters: tool.parameters as any,
-            endpointMapping: tool.endpointMapping as any,
-            responseMapping: tool.responseMapping as any,
-            outputSchema: ((tool as any).outputSchema ?? null) as any,
-            annotations: (tool.annotations ?? undefined) as any,
-            // A catalog tool: catalog updates may change or retire it.
-            origin: 'catalog',
-          },
-        });
-        toolsCreated++;
-      } catch (err: any) {
-        if (err.code !== 'P2002') {
-          this.logger.warn(`Failed to create tool ${tool.name}: ${err.message}`);
+    const toolRows = toolsToCreate.map((tool) => ({
+      connectorId: connector.id,
+      name: tool.name,
+      description: tool.description,
+      isEnabled: tool.enabled !== false,
+      // Seed the proxy preference from the adapter spec (default off).
+      useProxy: tool.useProxy === true,
+      parameters: tool.parameters as any,
+      endpointMapping: tool.endpointMapping as any,
+      responseMapping: tool.responseMapping as any,
+      outputSchema: ((tool as any).outputSchema ?? null) as any,
+      annotations: (tool.annotations ?? undefined) as any,
+      // A catalog tool: catalog updates may change or retire it.
+      origin: 'catalog',
+    }));
+
+    try {
+      // One insert for the whole adapter instead of one per tool
+      // (ANYTHINGMCP-CLOUD-BACKEND-5: 40-odd inserts for Telegram Bot). A
+      // name the connector already has is skipped, as before.
+      toolsCreated = (
+        await this.prisma.mcpTool.createMany({ data: toolRows, skipDuplicates: true })
+      ).count;
+    } catch (err: any) {
+      // A row the batch cannot take would otherwise lose every tool: insert
+      // one by one so only that tool is left out, as the import always did.
+      this.logger.warn(`Batch insert of the "${slug}" tools failed (${err.message}); inserting one by one`);
+      for (const data of toolRows) {
+        try {
+          await this.prisma.mcpTool.create({ data });
+          toolsCreated++;
+        } catch (e: any) {
+          if (e.code !== 'P2002') {
+            this.logger.warn(`Failed to create tool ${data.name}: ${e.message}`);
+          }
         }
       }
     }
diff --git a/packages/backend/src/adapters/mcp-adapter.spec.ts b/packages/backend/src/adapters/mcp-adapter.spec.ts
index 23c773ec..95e4dfe7 100644
--- a/packages/backend/src/adapters/mcp-adapter.spec.ts
+++ b/packages/backend/src/adapters/mcp-adapter.spec.ts
@@ -75,6 +75,10 @@ describe('importAdapter for an MCP adapter (splunk)', () => {
           created.push(data);
           return data;
         }),
+        createMany: jest.fn(async ({ data }: any) => {
+          created.push(...data);
+          return { count: data.length };
+        }),
       },
     };
     const service = new AdaptersService(
@@ -131,4 +135,18 @@ describe('importAdapter for an MCP adapter (splunk)', () => {
     expect(out.probe).toMatchObject({ ok: false, toolName: 'tools/list', status: 403 });
     expect((out.probe as any).message).toContain('invalid token audience');
   });
+
+  it('inserts the tools in one batch, and one by one only if the batch fails', async () => {
+    const discover = jest.fn().mockResolvedValue([remote('splunk_get_info'), remote('splunk_get_indexes')]);
+    const { service, prisma } = build(discover);
+    await service.importAdapter('splunk', 'u1', 'o1', creds);
+    expect(prisma.mcpTool.createMany).toHaveBeenCalledTimes(1);
+    expect(prisma.mcpTool.create).not.toHaveBeenCalled();
+
+    const fallback = build(jest.fn().mockResolvedValue([remote('splunk_get_info'), remote('splunk_get_indexes')]));
+    fallback.prisma.mcpTool.createMany.mockRejectedValueOnce(new Error('batch refused'));
+    const out = await fallback.service.importAdapter('splunk', 'u1', 'o1', creds);
+    expect(fallback.prisma.mcpTool.create).toHaveBeenCalledTimes(2);
+    expect(out.toolsCreated).toBe(2);
+  });
 });
diff --git a/packages/frontend/src/instrumentation-client.ts b/packages/frontend/src/instrumentation-client.ts
index fc06ec91..510c8386 100644
--- a/packages/frontend/src/instrumentation-client.ts
+++ b/packages/frontend/src/instrumentation-client.ts
@@ -11,6 +11,7 @@ import {
   BROWSER_CONFIG_GLOBAL,
   BROWSER_DENY_URLS,
   BROWSER_IGNORE_ERRORS,
+  beforeSendBrowser,
   scrubBreadcrumb,
   scrubEvent,
   type BrowserSentryConfig,
@@ -32,7 +33,8 @@ function init(): void {
     replaysSessionSampleRate: 0,
     replaysOnErrorSampleRate: 0,
     sendDefaultPii: false,
-    beforeSend: scrubEvent,
+    // Drops errors thrown entirely inside scripts the browser injected.
+    beforeSend: beforeSendBrowser,
     beforeSendTransaction: scrubEvent,
     beforeBreadcrumb: scrubBreadcrumb,
     // Noise from extensions and link scanners: see lib/sentry-scrub.ts.
diff --git a/packages/frontend/src/lib/sentry-scrub.ts b/packages/frontend/src/lib/sentry-scrub.ts
index c1e04e14..69213697 100644
--- a/packages/frontend/src/lib/sentry-scrub.ts
+++ b/packages/frontend/src/lib/sentry-scrub.ts
@@ -123,6 +123,28 @@ export const BROWSER_IGNORE_ERRORS: Array<string | RegExp> = [
   /Invalid call to runtime\.sendMessage\(\)\. Tab not found/,
 ];
 
+const SCRIPT_FILE = /\.[cm]?js(?:[?#]|$)/i;
+
+/**
+ * True for an error whose stack runs entirely through code that is not a
+ * script file: what a browser injects into the page itself. Chrome on iOS
+ * runs its translate helpers that way; translating /login into Portuguese
+ * overflowed one of them (ANYTHINGMCP-CLOUD-FRONTEND-9, -A: frames at lines
+ * 191 and 425 of a 12-line document). None of our /_next/ chunks was on the
+ * stack. The site drops the same events (ANYTHINGMCP-WEBSITE-K). Errors
+ * without a stack are kept.
+ */
+export function isInjectedScriptError(event: Event): boolean {
+  const frames = (event.exception?.values ?? []).flatMap((v) => v.stacktrace?.frames ?? []);
+  if (frames.length === 0) return false;
+  return frames.every((f) => !SCRIPT_FILE.test(f.filename ?? f.abs_path ?? ''));
+}
+
+/** The browser's beforeSend: drop injected-script noise, scrub the rest. */
+export function beforeSendBrowser<T extends Event>(event: T): T | null {
+  return isInjectedScriptError(event) ? null : scrubEvent(event);
+}
+
 /** Errors raised by scripts browser extensions inject into the page. */
 export const BROWSER_DENY_URLS: RegExp[] = [
   /^(chrome|moz|safari(-web)?|ms-browser)-extension:\/\//i,
diff --git a/packages/frontend/tests/e2e/sentry-injected-scripts.spec.ts b/packages/frontend/tests/e2e/sentry-injected-scripts.spec.ts
new file mode 100644
index 00000000..1d6c4bc6
--- /dev/null
+++ b/packages/frontend/tests/e2e/sentry-injected-scripts.spec.ts
@@ -0,0 +1,32 @@
+import { expect, test } from '@playwright/test';
+import type { Event } from '@sentry/nextjs';
+import { beforeSendBrowser, isInjectedScriptError } from '../../src/lib/sentry-scrub';
+
+/**
+ * Errors thrown entirely inside scripts the browser injected (Chrome on iOS
+ * translating /login, ANYTHINGMCP-CLOUD-FRONTEND-9 and -A) never reach Sentry.
+ * Anything with a frame in one of our chunks, or without a stack, still does.
+ */
+
+const withFrames = (...filenames: Array<string | undefined>): Event => ({
+  exception: { values: [{ type: 'RangeError', value: 'x', stacktrace: { frames: filenames.map((filename) => ({ filename })) } }] },
+});
+
+test.describe('injected-script errors', () => {
+  test('drops an error whose whole stack is the page itself', () => {
+    expect(isInjectedScriptError(withFrames('app:///login', 'app:///login'))).toBe(true);
+    expect(isInjectedScriptError(withFrames(undefined))).toBe(true);
+    expect(beforeSendBrowser(withFrames('app:///login'))).toBeNull();
+  });
+
+  test('keeps an error with a frame in one of our chunks', () => {
+    const ours = withFrames('app:///login', 'app:///_next/static/chunks/0abc.js');
+    expect(isInjectedScriptError(ours)).toBe(false);
+    expect(beforeSendBrowser(ours)).not.toBeNull();
+  });
+
+  test('keeps an error without a stack', () => {
+    expect(isInjectedScriptError({ exception: { values: [{ type: 'Error', value: 'La' }] } })).toBe(false);
+    expect(isInjectedScriptError({})).toBe(false);
+  });
+});