diff --git a/src/agents/pi-extensions/transcript-sanitize.ts b/src/agents/pi-extensions/transcript-sanitize.ts
deleted file mode 100644
index 2c5ee4c00..000000000
--- a/src/agents/pi-extensions/transcript-sanitize.ts
+++ /dev/null
@@ -1,42 +0,0 @@
-/**
- * Transcript repair/sanitization extension.
- *
- * Runs on every context build to prevent strict provider request rejections:
- * - duplicate or displaced tool results (Anthropic-compatible APIs, MiniMax, Cloud Code Assist)
- * - Cloud Code Assist tool call ID constraints + collision-safe sanitization
- */
-
-import type { AgentMessage } from "@mariozechner/pi-agent-core";
-import type { ContextEvent, ExtensionAPI, ExtensionContext } from "@mariozechner/pi-coding-agent";
-
-import { repairToolUseResultPairing } from "../session-transcript-repair.js";
-import { sanitizeToolCallIdsForCloudCodeAssist } from "../tool-call-id.js";
-import { resolveTranscriptPolicy } from "../transcript-policy.js";
-
-export default function transcriptSanitizeExtension(api: ExtensionAPI): void {
-  api.on("context", (event: ContextEvent, ctx: ExtensionContext) => {
-    let next = event.messages as AgentMessage[];
-
-    const policy = resolveTranscriptPolicy({
-      modelApi: ctx.model?.api,
-      provider: ctx.model?.provider,
-      modelId: ctx.model?.id,
-    });
-
-    if (policy.repairToolUseResultPairing) {
-      const repaired = repairToolUseResultPairing(next);
-      if (repaired.messages !== next) next = repaired.messages;
-    }
-
-    if (policy.sanitizeToolCallIds) {
-      const repairedIds = sanitizeToolCallIdsForCloudCodeAssist(
-        next,
-        policy.toolCallIdMode ?? "strict",
-      );
-      if (repairedIds !== next) next = repairedIds;
-    }
-
-    if (next === event.messages) return undefined;
-    return { messages: next };
-  });
-}