diff --git a/docs/codex-auth.md b/docs/codex-auth.md
index 020a609b..3858ef2c 100644
--- a/docs/codex-auth.md
+++ b/docs/codex-auth.md
@@ -28,6 +28,9 @@ codex
 # Terminal B:
 eval "$(ccsx auth use personal)"
 codex
+
+# Or launch a named profile directly through ccsx
+ccsx work
 ```
 
 ## Two-terminal example
@@ -49,6 +52,7 @@ codex                         # runs with CODEX_HOME=~/.ccs/codex-instances/pers
 | Command | Description |
 |---------|-------------|
 | `ccsx auth create <name>` | Create profile dir + auto-login |
+| `ccsx <name>` | Launch a named Codex auth profile |
 | `ccsx auth login <name>` | (Re-)authenticate an existing profile |
 | `ccsx auth switch <name>` | Set the persistent default profile for future `ccsx` launches |
 | `ccsx auth use <name>` | Emit shell exports for this shell only (use with `eval`) |
@@ -60,6 +64,7 @@ codex                         # runs with CODEX_HOME=~/.ccs/codex-instances/pers
 
 | Method | Scope | How |
 |--------|-------|-----|
+| `ccsx <name>` | One launch | Resolves `<name>` from the Codex profile registry |
 | `ccsx auth switch <name>` | Future `ccsx` launches | Writes to `~/.ccs/codex-profiles.yaml` |
 | `eval "$(ccsx auth use <name>)"` | Current shell only | Sets `CODEX_HOME` + `CCS_CODEX_PROFILE` in your shell |
 
diff --git a/src/bin/codex-runtime-router.ts b/src/bin/codex-runtime-router.ts
index e04c8ef2..287ac491 100644
--- a/src/bin/codex-runtime-router.ts
+++ b/src/bin/codex-runtime-router.ts
@@ -35,6 +35,31 @@ function errorMessage(err: unknown): string {
   return String(err);
 }
 
+function maybeSelectPositionalCodexProfile(argv: string[]): void {
+  const candidate = (argv[2] ?? '').trim();
+  if (!candidate || candidate.startsWith('-') || candidate === 'auth') {
+    return;
+  }
+
+  const { getNativeCodexPassthroughArgs } = require('../dispatcher/cli-argument-parser') as {
+    getNativeCodexPassthroughArgs: (args: string[]) => string[] | null;
+  };
+  if (getNativeCodexPassthroughArgs(argv.slice(2)) !== null) {
+    return;
+  }
+
+  const { CodexProfileRegistry } = require('../codex-auth/codex-profile-registry') as {
+    CodexProfileRegistry: new () => { hasProfile: (name: string) => boolean };
+  };
+  const registry = new CodexProfileRegistry();
+  if (!registry.hasProfile(candidate)) {
+    return;
+  }
+
+  process.env.CCS_CODEX_PROFILE = candidate;
+  argv[2] = 'default';
+}
+
 /**
  * Main entry-point for the ccsx / codex-runtime binary.
  *
@@ -54,11 +79,13 @@ export async function main(argv: string[]): Promise<number> {
 
   // ── non-auth branch: profile resolution ─────────────────────────────────
 
-  // F1: respect explicit CODEX_HOME unless CCS_CODEX_PROFILE asks for a managed profile.
-  const explicit = (process.env.CODEX_HOME ?? '').trim();
-  const profileOverride = (process.env.CCS_CODEX_PROFILE ?? '').trim();
-  if (!explicit || profileOverride) {
-    try {
+  try {
+    maybeSelectPositionalCodexProfile(argv);
+
+    // F1: respect explicit CODEX_HOME unless CCS_CODEX_PROFILE asks for a managed profile.
+    const explicit = (process.env.CODEX_HOME ?? '').trim();
+    const profileOverride = (process.env.CCS_CODEX_PROFILE ?? '').trim();
+    if (!explicit || profileOverride) {
       const { resolveActiveProfile } = require('../codex-auth/resolve-active-profile') as {
         resolveActiveProfile: (
           env: NodeJS.ProcessEnv
@@ -85,15 +112,15 @@ export async function main(argv: string[]): Promise<number> {
           );
         }
       }
-    } catch (resolverErr) {
-      const msg = errorMessage(resolverErr);
-      if (isCodexAuthProfileResolutionError(resolverErr)) {
-        process.stderr.write(`[X] codex-auth: ${msg}\n`);
-        return 1;
-      }
-      process.stderr.write(`[X] codex-auth: profile resolution failed (${msg})\n`);
+    }
+  } catch (resolverErr) {
+    const msg = errorMessage(resolverErr);
+    if (isCodexAuthProfileResolutionError(resolverErr)) {
+      process.stderr.write(`[X] codex-auth: ${msg}\n`);
       return 1;
     }
+    process.stderr.write(`[X] codex-auth: profile resolution failed (${msg})\n`);
+    return 1;
   }
 
   // ── delegate to CCS ─────────────────────────────────────────────────────
diff --git a/tests/unit/bin/codex-runtime-router.test.ts b/tests/unit/bin/codex-runtime-router.test.ts
index 2562e969..615d6fa0 100644
--- a/tests/unit/bin/codex-runtime-router.test.ts
+++ b/tests/unit/bin/codex-runtime-router.test.ts
@@ -146,6 +146,28 @@ describe('codex-runtime router — non-auth profile resolution', () => {
     expect(process.env.CODEX_HOME).toBe(profileDir);
   });
 
+  it('resolves a first positional ccsx arg from the Codex auth registry before CCS profiles', async () => {
+    const profileDir = makeProfileDir('ck');
+    writeRegistry({
+      version: '1.0',
+      default: null,
+      profiles: { ck: { type: 'codex', created: '2026-01-01T00:00:00.000Z', last_used: null } },
+    });
+
+    require.cache[ccsPath] = { exports: {} } as NodeJS.Module;
+    flushRouterCache();
+    require.cache[ccsPath] = { exports: {} } as NodeJS.Module;
+
+    const argv = ['node', 'codex-runtime', 'ck', 'fix failing tests'];
+    const { main } = require(routerPath) as { main: (argv: string[]) => Promise<number> };
+    const code = await main(argv);
+
+    expect(code).toBe(-1);
+    expect(process.env.CCS_CODEX_PROFILE).toBe('ck');
+    expect(process.env.CODEX_HOME).toBe(profileDir);
+    expect(argv).toEqual(['node', 'codex-runtime', 'default', 'fix failing tests']);
+  });
+
   it('leaves CODEX_HOME unset when no registry exists and no env profile set', async () => {
     // No registry file, no CCS_CODEX_PROFILE
     require.cache[ccsPath] = { exports: {} } as NodeJS.Module;
diff --git a/tests/unit/targets/codex-runtime-integration.test.ts b/tests/unit/targets/codex-runtime-integration.test.ts
index ce428ca3..a14dfed4 100644
--- a/tests/unit/targets/codex-runtime-integration.test.ts
+++ b/tests/unit/targets/codex-runtime-integration.test.ts
@@ -1095,6 +1095,62 @@ supports_websockets = false
     expect(readLoggedCodexCalls(codexArgsLogPath)).toEqual([]);
   });
 
+  it('launches a ccsx auth profile even when a Claude account has the same name', () => {
+    if (process.platform === 'win32') return;
+
+    const codexProfileDir = path.join(ccsDir, 'codex-instances', 'ck');
+    fs.mkdirSync(codexProfileDir, { recursive: true });
+    fs.writeFileSync(
+      path.join(ccsDir, 'config.yaml'),
+      [
+        'version: 2',
+        'accounts:',
+        '  ck:',
+        '    created: "2026-01-01"',
+        '    last_used: "2026-01-01"',
+      ].join('\n')
+    );
+    fs.writeFileSync(
+      path.join(ccsDir, 'codex-profiles.yaml'),
+      [
+        'version: "1.0"',
+        'default: null',
+        'profiles:',
+        '  ck:',
+        '    type: codex',
+        '    created: "2026-01-01T00:00:00.000Z"',
+        '    last_used: null',
+      ].join('\n')
+    );
+
+    const result = runCodexAlias(['ck', 'fix failing tests'], {
+      ...process.env,
+      CI: '1',
+      NO_COLOR: '1',
+      HOME: tmpHome,
+      CCS_HOME: tmpHome,
+      CCS_CODEX_PATH: fakeCodexPath,
+      CCS_TEST_CODEX_ARGS_OUT: codexArgsLogPath,
+      CCS_TEST_CODEX_ENV_OUT: codexEnvLogPath,
+    });
+
+    expect(result.status).toBe(0);
+    expect(result.stderr).not.toContain('Codex CLI does not support Claude account-based profiles.');
+    expect(readLoggedCodexCalls(codexArgsLogPath)).toEqual([['fix failing tests']]);
+    expect(readLoggedCodexEnv(codexEnvLogPath)).toEqual([
+      {
+        CODEX_HOME: codexProfileDir,
+        CODEX_CI: undefined,
+        CODEX_MANAGED_BY_BUN: undefined,
+        CODEX_THREAD_ID: undefined,
+        ANTHROPIC_BASE_URL: undefined,
+        CCS_BROWSER_USER_DATA_DIR: undefined,
+        CCS_BROWSER_PROFILE_DIR: undefined,
+        CCS_BROWSER_DEVTOOLS_WS_URL: undefined,
+      },
+    ]);
+  });
+
   it('rejects conflicting native provider config overrides for ccsxp', () => {
     if (process.platform === 'win32') return;