diff --git a/clients/web/src/components/groups/HistoryControls/HistoryControls.stories.tsx b/clients/web/src/components/groups/HistoryControls/HistoryControls.stories.tsx
index ed24eabc..938e31d5 100644
--- a/clients/web/src/components/groups/HistoryControls/HistoryControls.stories.tsx
+++ b/clients/web/src/components/groups/HistoryControls/HistoryControls.stories.tsx
@@ -1,8 +1,9 @@
 import type { Meta, StoryObj } from "@storybook/react-vite";
 import { fn } from "storybook/test";
+import type { MessageMethod } from "@inspector/core/mcp/types.js";
 import { HistoryControls } from "./HistoryControls";
 
-const SAMPLE_METHODS = [
+const SAMPLE_METHODS: MessageMethod[] = [
   "tools/call",
   "tools/list",
   "resources/read",
@@ -11,14 +12,14 @@ const SAMPLE_METHODS = [
   "prompts/list",
   "sampling/createMessage",
   "elicitation/create",
-] as const;
+];
 
 const meta: Meta<typeof HistoryControls> = {
   title: "Groups/HistoryControls",
   component: HistoryControls,
   args: {
     searchText: "",
-    availableMethods: [...SAMPLE_METHODS],
+    availableMethods: SAMPLE_METHODS,
     onSearchChange: fn(),
     onMethodFilterChange: fn(),
   },
diff --git a/clients/web/src/components/groups/HistoryControls/HistoryControls.tsx b/clients/web/src/components/groups/HistoryControls/HistoryControls.tsx
index 1fc6add8..32ba944d 100644
--- a/clients/web/src/components/groups/HistoryControls/HistoryControls.tsx
+++ b/clients/web/src/components/groups/HistoryControls/HistoryControls.tsx
@@ -1,12 +1,12 @@
 import { Select, Stack, TextInput, Title } from "@mantine/core";
-import type { RequestMethod } from "@inspector/core/mcp/types.js";
+import type { MessageMethod } from "@inspector/core/mcp/types.js";
 
 export interface HistoryControlsProps {
   searchText: string;
-  methodFilter?: RequestMethod;
-  availableMethods: RequestMethod[];
+  methodFilter?: MessageMethod;
+  availableMethods: MessageMethod[];
   onSearchChange: (text: string) => void;
-  onMethodFilterChange: (method: RequestMethod | undefined) => void;
+  onMethodFilterChange: (method: MessageMethod | undefined) => void;
 }
 
 export function HistoryControls({
@@ -31,7 +31,7 @@ export function HistoryControls({
         data={availableMethods}
         value={methodFilter ?? null}
         onChange={(value) =>
-          onMethodFilterChange((value as RequestMethod | null) ?? undefined)
+          onMethodFilterChange((value as MessageMethod | null) ?? undefined)
         }
         clearable
       />
diff --git a/clients/web/src/components/groups/HistoryListPanel/HistoryListPanel.tsx b/clients/web/src/components/groups/HistoryListPanel/HistoryListPanel.tsx
index 6e15d725..0bd6a6f7 100644
--- a/clients/web/src/components/groups/HistoryListPanel/HistoryListPanel.tsx
+++ b/clients/web/src/components/groups/HistoryListPanel/HistoryListPanel.tsx
@@ -8,10 +8,7 @@ import {
   Text,
   Title,
 } from "@mantine/core";
-import type {
-  MessageEntry,
-  RequestMethod,
-} from "../../../../../../core/mcp/types.js";
+import type { MessageEntry, MessageMethod } from "@inspector/core/mcp/types.js";
 import { HistoryEntry } from "../HistoryEntry/HistoryEntry";
 import { ListToggle } from "../../elements/ListToggle/ListToggle";
 import { extractMethod } from "../historyUtils.js";
@@ -20,7 +17,7 @@ export interface HistoryListPanelProps {
   entries: MessageEntry[];
   pinnedIds: Set<string>;
   searchText: string;
-  methodFilter?: RequestMethod;
+  methodFilter?: MessageMethod;
   onClearAll: () => void;
   onExport: () => void;
   onReplay: (id: string) => void;
@@ -56,7 +53,7 @@ function formatHistoryTitle(count: number): string {
 function matchesFilters(
   entry: MessageEntry,
   searchText: string,
-  methodFilter?: RequestMethod,
+  methodFilter?: MessageMethod,
 ): boolean {
   const method = extractMethod(entry);
   if (methodFilter && method !== methodFilter) return false;
diff --git a/clients/web/src/components/groups/historyUtils.ts b/clients/web/src/components/groups/historyUtils.ts
index 820d05fa..f6258b10 100644
--- a/clients/web/src/components/groups/historyUtils.ts
+++ b/clients/web/src/components/groups/historyUtils.ts
@@ -1,11 +1,10 @@
-import type {
-  MessageEntry,
-  RequestMethod,
-} from "../../../../../core/mcp/types.js";
+import type { MessageEntry, MessageMethod } from "@inspector/core/mcp/types.js";
 
-export function extractMethod(entry: MessageEntry): RequestMethod {
+export function extractMethod(entry: MessageEntry): MessageMethod {
   if ("method" in entry.message) {
-    return entry.message.method as RequestMethod;
+    // Cast: SDK types message.method as `string`, but every entry in this
+    // app's MessageEntry log originates from MCP SDK schemas.
+    return entry.message.method as MessageMethod;
   }
   return "response";
 }
diff --git a/clients/web/src/components/screens/HistoryScreen/HistoryScreen.tsx b/clients/web/src/components/screens/HistoryScreen/HistoryScreen.tsx
index 052673f2..1e1a499e 100644
--- a/clients/web/src/components/screens/HistoryScreen/HistoryScreen.tsx
+++ b/clients/web/src/components/screens/HistoryScreen/HistoryScreen.tsx
@@ -1,9 +1,6 @@
 import { useMemo, useState } from "react";
 import { Card, Flex, Stack } from "@mantine/core";
-import type {
-  MessageEntry,
-  RequestMethod,
-} from "../../../../../../core/mcp/types.js";
+import type { MessageEntry, MessageMethod } from "@inspector/core/mcp/types.js";
 import { HistoryControls } from "../../groups/HistoryControls/HistoryControls";
 import { HistoryListPanel } from "../../groups/HistoryListPanel/HistoryListPanel.js";
 import { extractMethod } from "../../groups/historyUtils.js";
@@ -43,7 +40,7 @@ export function HistoryScreen({
   onTogglePin,
 }: HistoryScreenProps) {
   const [searchText, setSearchText] = useState("");
-  const [methodFilter, setMethodFilter] = useState<RequestMethod | undefined>();
+  const [methodFilter, setMethodFilter] = useState<MessageMethod | undefined>();
 
   const availableMethods = useMemo(
     () => Array.from(new Set(entries.map(extractMethod))).sort(),
diff --git a/core/mcp/types.ts b/core/mcp/types.ts
index ed6e005b..8f0f1c6c 100644
--- a/core/mcp/types.ts
+++ b/core/mcp/types.ts
@@ -103,7 +103,7 @@ export interface MessageEntry {
 }
 
 /** Method name for any MessageEntry traffic, plus synthetic "response" for result/error entries. */
-export type RequestMethod =
+export type MessageMethod =
   | ClientRequest["method"]
   | ClientNotification["method"]
   | ServerRequest["method"]
diff --git a/specification/v2_ux_interfaces.md b/specification/v2_ux_interfaces.md
index 354b08db..0c906d28 100644
--- a/specification/v2_ux_interfaces.md
+++ b/specification/v2_ux_interfaces.md
@@ -356,7 +356,7 @@ will close out as part of that work.
 - **Purpose**: Search + method filter sidebar for the history screen.
 - **Current props**: `searchText`, `methodFilter`, `onSearchChange`, `onMethodFilterChange`.
 - **MCP schema touch points**: Method filter values are MCP `Request.method` literals.
-- **Target props**: `searchText`, `methodFilter?: RequestMethod`, `availableMethods: RequestMethod[]`, `onSearchChange`, `onMethodFilterChange`.
+- **Target props**: `searchText`, `methodFilter?: MessageMethod`, `availableMethods: MessageMethod[]`, `onSearchChange`, `onMethodFilterChange`.
 - **Callbacks → core hook**: `useMessageLog`.
 - **Internal refactors**: Type the method filter as a union of MCP method strings.