diff --git a/src/base-command.ts b/src/base-command.ts
index bb8d9cf16..557de85ed 100644
--- a/src/base-command.ts
+++ b/src/base-command.ts
@@ -24,7 +24,7 @@ import {
   formatWarning,
 } from "./utils/output.js";
 import stripAnsi from "strip-ansi";
-import { getCliVersion } from "./utils/version.js";
+import { getAgentName, getCliVersion } from "./utils/version.js";
 import Spaces from "@ably/spaces";
 import { ChatClient } from "@ably/chat";
 import {
@@ -1099,10 +1099,11 @@ export abstract class AblyBaseCommand extends InteractiveBaseCommand {
     // Set logLevel to highest ONLY when using custom handler to capture everything needed by it
     options.logLevel = 4;
 
-    // Add agent header to identify requests from the CLI
+    // Add agent header to identify requests from the CLI. Web CLI traffic is
+    // tagged separately so Ably can distinguish hosted vs local usage.
     (
       options as Ably.ClientOptions & { agents: Record<string, string> }
-    ).agents = { "ably-cli": getCliVersion() };
+    ).agents = { [getAgentName()]: getCliVersion() };
 
     return options;
   }
diff --git a/src/commands/status.ts b/src/commands/status.ts
index dfc4b3b13..6c3cdcc69 100644
--- a/src/commands/status.ts
+++ b/src/commands/status.ts
@@ -7,7 +7,7 @@ import { AblyBaseCommand } from "../base-command.js";
 import { coreGlobalFlags } from "../flags.js";
 import { BaseFlags } from "../types/cli.js";
 import openUrl from "../utils/open-url.js";
-import { getCliVersion } from "../utils/version.js";
+import { getAgentName, getCliVersion } from "../utils/version.js";
 
 interface StatusResponse {
   status?: boolean;
@@ -46,7 +46,7 @@ export default class StatusCommand extends AblyBaseCommand {
     try {
       const response = await fetch("https://ably.com/status/up.json", {
         headers: {
-          "Ably-Agent": `ably-cli/${getCliVersion()}`,
+          "Ably-Agent": `${getAgentName()}/${getCliVersion()}`,
         },
       });
       const data = (await response.json()) as StatusResponse;
diff --git a/src/services/control-api.ts b/src/services/control-api.ts
index 5565dc1d8..fe4de0f7a 100644
--- a/src/services/control-api.ts
+++ b/src/services/control-api.ts
@@ -1,6 +1,6 @@
 import fetch, { type RequestInit } from "node-fetch";
 import { CommandError } from "../errors/command-error.js";
-import { getCliVersion } from "../utils/version.js";
+import { getAgentName, getCliVersion } from "../utils/version.js";
 
 export interface ControlApiOptions {
   accessToken: string;
@@ -528,7 +528,7 @@ export class ControlApi {
         Accept: "application/json",
         Authorization: `Bearer ${this.accessToken}`,
         ...(!isFormData && { "Content-Type": "application/json" }),
-        "Ably-Agent": `ably-cli/${getCliVersion()}`,
+        "Ably-Agent": `${getAgentName()}/${getCliVersion()}`,
       },
       method,
     };
diff --git a/src/utils/version.ts b/src/utils/version.ts
index a0aee04e9..a92018015 100644
--- a/src/utils/version.ts
+++ b/src/utils/version.ts
@@ -4,6 +4,7 @@
 import chalk from "chalk";
 // Import package.json directly - TypeScript will resolve this at compile time
 import packageJson from "../../package.json" with { type: "json" };
+import isWebCliMode from "./web-mode.js";
 
 /**
  * Get the CLI version from package.json
@@ -13,6 +14,15 @@ export function getCliVersion(): string {
   return packageJson.version;
 }
 
+/**
+ * Agent name used in Ably-Agent headers and SDK agents option. Distinguishes
+ * traffic from the local CLI vs the hosted Web CLI so it can be attributed
+ * separately in Ably's analytics.
+ */
+export function getAgentName(): string {
+  return isWebCliMode() ? "ably-web-cli" : "ably-cli";
+}
+
 /**
  * Get standardized version information object
  */
diff --git a/test/unit/base-command/agent-header.test.ts b/test/unit/base-command/agent-header.test.ts
index 4c4006a53..d49da7358 100644
--- a/test/unit/base-command/agent-header.test.ts
+++ b/test/unit/base-command/agent-header.test.ts
@@ -1,4 +1,4 @@
-import { describe, it, expect, beforeEach, vi } from "vitest";
+import { describe, it, expect, afterEach, vi } from "vitest";
 import { Config } from "@oclif/core";
 import { AblyBaseCommand } from "../../../src/base-command.js";
 import { getCliVersion } from "../../../src/utils/version.js";
@@ -18,24 +18,37 @@ class TestCommand extends AblyBaseCommand {
 }
 
 describe("Agent Header Unit Tests", function () {
-  beforeEach(function () {});
+  afterEach(function () {
+    delete process.env.ABLY_WEB_CLI_MODE;
+  });
 
   describe("Ably SDK Agent Header", function () {
-    it("should include agent header in client options", function () {
+    it("should tag CLI traffic with the ably-cli agent by default", function () {
       const mockConfig = { runHook: vi.fn() } as unknown as Config;
       const command = new TestCommand([], mockConfig);
 
-      const flags = {
+      const clientOptions = command.testGetClientOptions({
         "api-key": "test-key:secret",
-      };
-
-      const clientOptions = command.testGetClientOptions(flags);
+      });
 
-      expect(clientOptions.agents).toBeDefined();
       expect(clientOptions.agents).toEqual({
         "ably-cli": getCliVersion(),
       });
     });
+
+    it("should tag Web CLI traffic with the ably-web-cli agent", function () {
+      process.env.ABLY_WEB_CLI_MODE = "true";
+      const mockConfig = { runHook: vi.fn() } as unknown as Config;
+      const command = new TestCommand([], mockConfig);
+
+      const clientOptions = command.testGetClientOptions({
+        "api-key": "test-key:secret",
+      });
+
+      expect(clientOptions.agents).toEqual({
+        "ably-web-cli": getCliVersion(),
+      });
+    });
   });
 
   describe("Version Format", function () {