diff --git a/src/application/SetupClientConfiguration.ts b/src/application/SetupClientConfiguration.ts
index 707d6ae9f4..7487e46bdc 100644
--- a/src/application/SetupClientConfiguration.ts
+++ b/src/application/SetupClientConfiguration.ts
@@ -38,37 +38,6 @@ export const configureClientConfiguration = (
   return configureClientDocument(client, environment, command, client.format);
 };
 
-/** @deprecated Use configureClientConfiguration with the client's declared format. */
-export const configureJsonClient = (
-  client: SetupClient,
-  environment: SetupProviderEnvironment = {},
-  command: readonly string[] = defaultCommand(),
-): Promise<ClientConfigurationResult> =>
-  configureClientWithFormat(client, "json", environment, command);
-
-/** @deprecated Use configureClientConfiguration with the client's declared format. */
-export const configureTomlClient = (
-  client: SetupClient,
-  environment: SetupProviderEnvironment = {},
-  command: readonly string[] = defaultCommand(),
-): Promise<ClientConfigurationResult> =>
-  configureClientWithFormat(client, "toml", environment, command);
-
-const configureClientWithFormat = (
-  client: SetupClient,
-  format: "json" | "toml",
-  environment: SetupProviderEnvironment,
-  command: readonly string[],
-): Promise<ClientConfigurationResult> => {
-  if (client.format !== undefined && client.format !== format)
-    return Promise.resolve({ status: "failed", reason: "readback" });
-  return configureClientConfiguration(
-    { ...client, format: client.format ?? format },
-    environment,
-    command,
-  );
-};
-
 const configureClientDocument = async (
   client: SetupClient,
   environment: SetupProviderEnvironment,
diff --git a/src/config/parseConfig.ts b/src/config/parseConfig.ts
index 17fb465fb6..4ab6e02ee5 100644
--- a/src/config/parseConfig.ts
+++ b/src/config/parseConfig.ts
@@ -21,7 +21,7 @@ const executableAvailable = (path: string): boolean => {
   }
 };
 
-export const defaultHopperLauncherPath = (
+const defaultHopperLauncherPath = (
   platform: NodeJS.Platform = process.platform,
   homeDirectory: string = homedir(),
   executable: (path: string) => boolean = executableAvailable,
diff --git a/tests/boundary/filesystem/clientConfigurationTransactions.test.ts b/tests/boundary/filesystem/clientConfigurationTransactions.test.ts
index ceed2b33b5..05576f5631 100644
--- a/tests/boundary/filesystem/clientConfigurationTransactions.test.ts
+++ b/tests/boundary/filesystem/clientConfigurationTransactions.test.ts
@@ -3,11 +3,7 @@ import { join } from "node:path";
 
 import { describe, expect, it } from "vitest";
 
-import {
-  configureClientConfiguration,
-  configureJsonClient,
-  configureTomlClient,
-} from "../../../src/application/SetupClientConfiguration.js";
+import { configureClientConfiguration } from "../../../src/application/SetupClientConfiguration.js";
 import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
 
 describe("client configuration write failures", () => {
@@ -59,43 +55,3 @@ describe("TOML client configuration comparison", () => {
     });
   });
 });
-
-describe("format-specific compatibility entrypoints", () => {
-  it("defaults a missing client format for legacy JSON and TOML calls", async () => {
-    const root = await createTestTempDirectory("rea-client-compat-format-");
-    const jsonPath = join(root, "config.json");
-    const tomlPath = join(root, "config.toml");
-
-    expect(
-      await configureJsonClient({ name: "cursor", configPath: jsonPath }),
-    ).toMatchObject({
-      status: "configured",
-    });
-    expect(await readFile(jsonPath, "utf8")).toContain('"mcpServers"');
-    expect(
-      await configureTomlClient({ name: "codex", configPath: tomlPath }),
-    ).toMatchObject({
-      status: "configured",
-    });
-    expect(await readFile(tomlPath, "utf8")).toContain("[mcp_servers.rea]");
-  });
-
-  it.each([
-    ["JSON", configureJsonClient, "toml"],
-    ["TOML", configureTomlClient, "json"],
-  ] as const)(
-    "rejects a mismatched %s compatibility format",
-    async (_name, configure, format) => {
-      const root = await createTestTempDirectory("rea-client-compat-mismatch-");
-      const configPath = join(root, "config");
-      const original = "keep this file unchanged\n";
-      await writeFile(configPath, original);
-
-      expect(await configure({ name: "fixture", configPath, format })).toEqual({
-        status: "failed",
-        reason: "readback",
-      });
-      expect(await readFile(configPath, "utf8")).toBe(original);
-    },
-  );
-});