diff --git a/src/main/services/team/TeamMcpConfigBuilder.ts b/src/main/services/team/TeamMcpConfigBuilder.ts
index f4d7ebd4..21ec5c63 100644
--- a/src/main/services/team/TeamMcpConfigBuilder.ts
+++ b/src/main/services/team/TeamMcpConfigBuilder.ts
@@ -75,13 +75,24 @@ function getSourceServerEntry(): string {
   return path.join(getWorkspaceMcpServerDir(), 'src', 'index.ts');
 }
 
-function getWorkspaceTsxBinCandidates(): string[] {
+function getWorkspaceTsxPackageJsonCandidates(): string[] {
   return [
-    path.join(getWorkspaceMcpServerDir(), 'node_modules', '.bin', 'tsx'),
-    path.join(getWorkspaceRoot(), 'node_modules', '.bin', 'tsx'),
+    path.join(getWorkspaceMcpServerDir(), 'node_modules', 'tsx', 'package.json'),
+    path.join(getWorkspaceRoot(), 'node_modules', 'tsx', 'package.json'),
   ];
 }
 
+function resolvePackageBin(
+  packageJsonPath: string,
+  binName: string,
+  packageJsonRaw: string
+): string | null {
+  const packageJson = JSON.parse(packageJsonRaw) as { bin?: string | Record<string, string> };
+  const bin = typeof packageJson.bin === 'string' ? packageJson.bin : packageJson.bin?.[binName];
+  if (!bin) return null;
+  return path.resolve(path.dirname(packageJsonPath), bin);
+}
+
 async function pathExists(targetPath: string): Promise<boolean> {
   try {
     await fs.promises.access(targetPath, fs.constants.F_OK);
@@ -91,6 +102,40 @@ async function pathExists(targetPath: string): Promise<boolean> {
   }
 }
 
+async function resolveWorkspaceTsxCli(checked: string[]): Promise<string | null> {
+  for (const packageJsonPath of getWorkspaceTsxPackageJsonCandidates()) {
+    checked.push(packageJsonPath);
+    if (!(await pathExists(packageJsonPath))) {
+      continue;
+    }
+
+    try {
+      const tsxCli = resolvePackageBin(
+        packageJsonPath,
+        'tsx',
+        await fs.promises.readFile(packageJsonPath, 'utf8')
+      );
+      if (!tsxCli) {
+        logger.warn(`tsx package has no bin.tsx entry at ${packageJsonPath}`);
+        continue;
+      }
+
+      checked.push(tsxCli);
+      if (await pathExists(tsxCli)) {
+        return tsxCli;
+      }
+    } catch (error) {
+      logger.warn(
+        `Failed to resolve tsx CLI from ${packageJsonPath}: ${
+          error instanceof Error ? error.message : String(error)
+        }`
+      );
+    }
+  }
+
+  return null;
+}
+
 function shouldRetryMcpConfigRemoval(error: NodeJS.ErrnoException): boolean {
   return error.code === 'EPERM' || error.code === 'EBUSY';
 }
@@ -236,14 +281,12 @@ export async function resolveAgentTeamsMcpLaunchSpec(): Promise<McpLaunchSpec> {
   const sourceEntry = getSourceServerEntry();
   checked.push(sourceEntry);
   if (await pathExists(sourceEntry)) {
-    for (const tsxBin of getWorkspaceTsxBinCandidates()) {
-      checked.push(tsxBin);
-      if (await pathExists(tsxBin)) {
-        return {
-          command: tsxBin,
-          args: [sourceEntry],
-        };
-      }
+    const tsxCli = await resolveWorkspaceTsxCli(checked);
+    if (tsxCli) {
+      return {
+        command: await resolveNodePath(),
+        args: [tsxCli, sourceEntry],
+      };
     }
   }
 
diff --git a/test/main/services/team/TeamMcpConfigBuilder.test.ts b/test/main/services/team/TeamMcpConfigBuilder.test.ts
index 273b2c82..01b50283 100644
--- a/test/main/services/team/TeamMcpConfigBuilder.test.ts
+++ b/test/main/services/team/TeamMcpConfigBuilder.test.ts
@@ -80,7 +80,10 @@ describe('TeamMcpConfigBuilder', () => {
   ): { command?: string; args?: string[]; env?: Record<string, string> } | undefined {
     const raw = fs.readFileSync(configPath, 'utf8');
     const parsed = JSON.parse(raw) as {
-      mcpServers?: Record<string, { command?: string; args?: string[]; env?: Record<string, string> }>;
+      mcpServers?: Record<
+        string,
+        { command?: string; args?: string[]; env?: Record<string, string> }
+      >;
     };
     return parsed.mcpServers?.['agent-teams'];
   }
@@ -93,12 +96,13 @@ describe('TeamMcpConfigBuilder', () => {
     expect(server?.command).toMatch(/(^node$|[\\/]node(?:\.exe)?$)/);
   }
 
-  function expectTsxEntry(
+  function expectNodeTsxSourceEntry(
     server: { command?: string; args?: string[] } | undefined,
-    entry: string
+    tsxCli: string,
+    sourceEntry: string
   ): void {
-    expect(server?.args).toEqual([entry]);
-    expect(server?.command).toMatch(/[\\/]tsx(?:\.cmd)?$/);
+    expect(server?.args).toEqual([tsxCli, sourceEntry]);
+    expect(server?.command).toMatch(/(^node$|[\\/]node(?:\.exe)?$)/);
   }
 
   function getBuiltWorkspaceEntry(): string {
@@ -109,8 +113,12 @@ describe('TeamMcpConfigBuilder', () => {
     return path.join(process.cwd(), 'mcp-server', 'src', 'index.ts');
   }
 
-  function getWorkspaceTsxBin(): string {
-    return path.join(process.cwd(), 'mcp-server', 'node_modules', '.bin', 'tsx');
+  function getWorkspaceTsxPackageJson(): string {
+    return path.join(process.cwd(), 'mcp-server', 'node_modules', 'tsx', 'package.json');
+  }
+
+  function getWorkspaceTsxCli(): string {
+    return path.join(process.cwd(), 'mcp-server', 'node_modules', 'tsx', 'dist', 'cli.mjs');
   }
 
   function mockPathExists(existingPaths: string[], options: { strict?: boolean } = {}): void {
@@ -138,14 +146,16 @@ describe('TeamMcpConfigBuilder', () => {
 
   function mockSourceWorkspaceEntryAvailable(): {
     sourceEntry: string;
-    tsxBin: string;
+    tsxPackageJson: string;
+    tsxCli: string;
     builtEntry: string;
   } {
     const sourceEntry = getSourceWorkspaceEntry();
-    const tsxBin = getWorkspaceTsxBin();
+    const tsxPackageJson = getWorkspaceTsxPackageJson();
+    const tsxCli = getWorkspaceTsxCli();
     const builtEntry = getBuiltWorkspaceEntry();
-    mockPathExists([sourceEntry, tsxBin, builtEntry], { strict: true });
-    return { sourceEntry, tsxBin, builtEntry };
+    mockPathExists([sourceEntry, tsxPackageJson, tsxCli, builtEntry], { strict: true });
+    return { sourceEntry, tsxPackageJson, tsxCli, builtEntry };
   }
 
   function mockBuiltWorkspaceEntryAvailable(): string {
@@ -225,7 +235,7 @@ describe('TeamMcpConfigBuilder', () => {
   });
 
   it('prefers the source workspace MCP entry in dev mode when available', async () => {
-    const { sourceEntry } = mockSourceWorkspaceEntryAvailable();
+    const { sourceEntry, tsxCli } = mockSourceWorkspaceEntryAvailable();
     const builder = new TeamMcpConfigBuilder();
 
     const configPath = await builder.writeConfigFile();
@@ -237,7 +247,7 @@ describe('TeamMcpConfigBuilder', () => {
     };
 
     const server = parsed.mcpServers?.['agent-teams'];
-    expectTsxEntry(server, sourceEntry);
+    expectNodeTsxSourceEntry(server, tsxCli, sourceEntry);
   });
 
   it('pins the MCP controller to the active Claude base path', async () => {
@@ -355,7 +365,7 @@ describe('TeamMcpConfigBuilder', () => {
   });
 
   it('generated agent-teams server ignores same-named user MCP entry', async () => {
-    const { sourceEntry } = mockSourceWorkspaceEntryAvailable();
+    const { sourceEntry, tsxCli } = mockSourceWorkspaceEntryAvailable();
     const homeDir = fs.mkdtempSync(path.join(os.tmpdir(), 'team-mcp-home-'));
     createdDirs.push(homeDir);
     mockHomeDir = homeDir;
@@ -381,7 +391,7 @@ describe('TeamMcpConfigBuilder', () => {
       mcpServers: Record<string, { command?: string; args?: string[] }>;
     };
 
-    expectTsxEntry(parsed.mcpServers['agent-teams'], sourceEntry);
+    expectNodeTsxSourceEntry(parsed.mcpServers['agent-teams'], tsxCli, sourceEntry);
   });
 
   it('passes the configured Claude root to the MCP server', async () => {
@@ -626,7 +636,7 @@ describe('TeamMcpConfigBuilder', () => {
   });
 
   it('packaged mode falls back to the source workspace MCP entry when resourcesPath bundle is missing', async () => {
-    const { sourceEntry } = mockSourceWorkspaceEntryAvailable();
+    const { sourceEntry, tsxCli } = mockSourceWorkspaceEntryAvailable();
     setPackagedMode(true, '6.0.0');
     const resourcesDir = fs.mkdtempSync(path.join(os.tmpdir(), 'team-mcp-resources-'));
     createdDirs.push(resourcesDir);
@@ -636,6 +646,6 @@ describe('TeamMcpConfigBuilder', () => {
     const configPath = await builder.writeConfigFile();
     createdPaths.push(configPath);
 
-    expectTsxEntry(readGeneratedServer(configPath), sourceEntry);
+    expectNodeTsxSourceEntry(readGeneratedServer(configPath), tsxCli, sourceEntry);
   });
 });