diff --git a/images/examples/codex/acp-server.mjs b/images/examples/codex/acp-server.mjs
index 6e20704..aa1268e 100644
--- a/images/examples/codex/acp-server.mjs
+++ b/images/examples/codex/acp-server.mjs
@@ -26,6 +26,7 @@ const DEFAULTS = {
   workdir: "/workspace",
   requiredEnv: ["OPENAI_API_KEY"],
   model: "",
+  profile: "",
   shutdownTimeoutMs: 5_000,
 };
 
@@ -149,6 +150,7 @@ function extractPromptText(prompt) {
 function buildConfig(env) {
   const codexPackageRoot = env.SPRITZ_CODEX_PACKAGE_ROOT || DEFAULTS.codexPackageRoot;
   const model = String(env.SPRITZ_CODEX_MODEL || DEFAULTS.model || "").trim();
+  const profile = String(env.SPRITZ_CODEX_PROFILE || DEFAULTS.profile || "").trim();
   const configOptions = [];
   if (model) {
     configOptions.push({
@@ -171,6 +173,7 @@ function buildConfig(env) {
     agentTitle: env.SPRITZ_CODEX_AGENT_TITLE || DEFAULTS.agentTitle,
     agentVersion: env.SPRITZ_CODEX_AGENT_VERSION || readVersion(codexPackageRoot),
     model,
+    profile,
     configOptions,
     metadata: {
       protocolVersion: 1,
@@ -308,9 +311,11 @@ class CodexACPRuntime {
 
   buildCodexCommand(session, promptText, outputFile) {
     const modelArgs = this.config.model ? ["--model", this.config.model] : [];
+    const profileArgs = this.config.profile ? ["-p", this.config.profile] : [];
     if (session.threadId) {
       return [
         "exec",
+        ...profileArgs,
         "resume",
         "--json",
         "--skip-git-repo-check",
@@ -324,6 +329,7 @@ class CodexACPRuntime {
     }
     return [
       "exec",
+      ...profileArgs,
       "--json",
       "--skip-git-repo-check",
       "-C",
diff --git a/images/examples/codex/acp-server.test.mjs b/images/examples/codex/acp-server.test.mjs
index d15ce5d..05980c6 100644
--- a/images/examples/codex/acp-server.test.mjs
+++ b/images/examples/codex/acp-server.test.mjs
@@ -138,6 +138,10 @@ function writeMockCodex(tempRoot) {
       "  process.exit(0);",
       "}",
       "if (args[0] !== 'exec') { process.exit(1); }",
+      "const captureFile = String(process.env.CODEX_ARGS_CAPTURE || '');",
+      "if (captureFile) {",
+      "  fs.appendFileSync(captureFile, JSON.stringify(args) + '\\n');",
+      "}",
       "const isResume = args[1] === 'resume';",
       "const prompt = String(args[args.length - 1] || '');",
       "const outputFile = findFlagValue('--output-last-message');",
@@ -359,3 +363,88 @@ test("session/prompt captures Codex replies and replays them on load", async (t)
   });
   assert.equal(secondPrompt.updates[1].params.update.content.text, "Resumed: second turn");
 });
+
+test("session/prompt passes the configured Codex profile to fresh and resumed exec calls", async (t) => {
+  const tempRoot = fs.mkdtempSync(path.join(os.tmpdir(), "spritz-codex-runtime-"));
+  const codexPath = writeMockCodex(tempRoot);
+  const argsCapturePath = path.join(tempRoot, "codex-args.jsonl");
+  const runtime = new CodexACPRuntime(
+    {
+      codexBin: codexPath,
+      codexArgs: [],
+      workdir: tempRoot,
+      model: "",
+      profile: "gateway-profile",
+      configOptions: [],
+      metadata: {
+        protocolVersion: 1,
+        agentCapabilities: { loadSession: true, promptCapabilities: {} },
+        agentInfo: { name: "codex", title: "Codex", version: "1.0.0" },
+        authMethods: [],
+      },
+    },
+    {
+      ...process.env,
+      OPENAI_API_KEY: "test-key",
+      CODEX_ARGS_CAPTURE: argsCapturePath,
+    },
+    console,
+  );
+  t.after(() => {
+    runtime.stop();
+  });
+
+  const socket = new FakeSocket();
+  runtime.attach(socket);
+  await sendRuntimeRPC(socket, { id: "init-1", jsonrpc: "2.0", method: "initialize", params: {} });
+  const created = await sendRuntimeRPC(socket, {
+    id: "new-1",
+    jsonrpc: "2.0",
+    method: "session/new",
+    params: { cwd: tempRoot, mcpServers: [] },
+  });
+  const sessionId = String(created.result.sessionId);
+
+  await sendRuntimeRPC(socket, {
+    id: "prompt-1",
+    jsonrpc: "2.0",
+    method: "session/prompt",
+    params: {
+      sessionId,
+      prompt: [{ type: "text", text: "hello world" }],
+    },
+  });
+  await sendRuntimeRPC(socket, {
+    id: "prompt-2",
+    jsonrpc: "2.0",
+    method: "session/prompt",
+    params: {
+      sessionId,
+      prompt: [{ type: "text", text: "second turn" }],
+    },
+  });
+
+  const capturedArgs = fs
+    .readFileSync(argsCapturePath, "utf8")
+    .trim()
+    .split("\n")
+    .filter(Boolean)
+    .map((line) => JSON.parse(line));
+
+  assert.equal(capturedArgs.length, 2);
+  assert.deepEqual(capturedArgs[0].slice(0, 5), [
+    "exec",
+    "-p",
+    "gateway-profile",
+    "--json",
+    "--skip-git-repo-check",
+  ]);
+  assert.deepEqual(capturedArgs[1].slice(0, 6), [
+    "exec",
+    "-p",
+    "gateway-profile",
+    "resume",
+    "--json",
+    "--skip-git-repo-check",
+  ]);
+});