diff --git a/src/agents/embedded-agent-runner/run/attempt-session.ts b/src/agents/embedded-agent-runner/run/attempt-session.ts
index ca1fadb6f1cf..c82a097047ff 100644
--- a/src/agents/embedded-agent-runner/run/attempt-session.ts
+++ b/src/agents/embedded-agent-runner/run/attempt-session.ts
@@ -6,7 +6,7 @@ import type { CreateAgentSessionOptions } from "../../sessions/index.js";
 /**
  * Session construction bridge for embedded-attempt runs.
  */
-export type EmbeddedAgentSessionOptions = {
+type EmbeddedAgentSessionOptions = {
   cwd: string;
   agentDir: string;
   authStorage: unknown;
diff --git a/src/agents/embedded-agent-runner/run/attempt-trajectory-status.ts b/src/agents/embedded-agent-runner/run/attempt-trajectory-status.ts
index 1327888fdfb2..d0ef5e44dc05 100644
--- a/src/agents/embedded-agent-runner/run/attempt-trajectory-status.ts
+++ b/src/agents/embedded-agent-runner/run/attempt-trajectory-status.ts
@@ -6,13 +6,13 @@ import {
   type AcceptedSessionSpawn,
 } from "../../accepted-session-spawn.js";
 
-export type AttemptTrajectoryTerminalStatus = "success" | "error" | "interrupted";
+type AttemptTrajectoryTerminalStatus = "success" | "error" | "interrupted";
 
 /** Terminal error marker for runs that produced no user-visible delivery or durable progress. */
 export const NON_DELIVERABLE_TERMINAL_TURN_REASON = "non_deliverable_terminal_turn";
 
 /** Normalized terminal status recorded for an embedded run attempt trajectory. */
-export type AttemptTrajectoryTerminal = {
+type AttemptTrajectoryTerminal = {
   status: AttemptTrajectoryTerminalStatus;
   terminalError?: typeof NON_DELIVERABLE_TERMINAL_TURN_REASON;
 };
diff --git a/src/agents/embedded-agent-runner/run/attempt.tool-search-run-plan.ts b/src/agents/embedded-agent-runner/run/attempt.tool-search-run-plan.ts
index 6bb9ae6c802e..69075f441ab6 100644
--- a/src/agents/embedded-agent-runner/run/attempt.tool-search-run-plan.ts
+++ b/src/agents/embedded-agent-runner/run/attempt.tool-search-run-plan.ts
@@ -24,7 +24,7 @@ export const TOOL_SEARCH_CONTROL_ALLOWLIST_NAMES = [
 type CollectAllowedToolNamesParams = Parameters<typeof collectAllowedToolNames>[0];
 
 /** Derived tool allowlists used for visible prompt tools, replay tools, and empty-allowlist checks. */
-export type ToolSearchRunPlan = {
+type ToolSearchRunPlan = {
   visibleAllowedToolNames: Set<string>;
   replayAllowedToolNames: Set<string>;
   liveAllowedToolNames: Set<string>;
diff --git a/src/agents/embedded-agent-runner/run/attempt.transcript-policy.ts b/src/agents/embedded-agent-runner/run/attempt.transcript-policy.ts
index 084851c9fb44..41ebb81bd820 100644
--- a/src/agents/embedded-agent-runner/run/attempt.transcript-policy.ts
+++ b/src/agents/embedded-agent-runner/run/attempt.transcript-policy.ts
@@ -6,7 +6,7 @@ import type { ProviderRuntimeModel } from "../../../plugins/provider-runtime-mod
 import type { AgentRuntimePlan } from "../../runtime-plan/types.js";
 import { resolveTranscriptPolicy, type TranscriptPolicy } from "../../transcript-policy.js";
 
-export type AttemptRuntimeModelContext = NonNullable<
+type AttemptRuntimeModelContext = NonNullable<
   Parameters<AgentRuntimePlan["transcript"]["resolvePolicy"]>[0]
 >;