diff --git a/packages/memory-host-sdk/src/host/embedding-worker-errors.ts b/packages/memory-host-sdk/src/host/embedding-worker-errors.ts
index 2621de3a52e1..5297d482ce4d 100644
--- a/packages/memory-host-sdk/src/host/embedding-worker-errors.ts
+++ b/packages/memory-host-sdk/src/host/embedding-worker-errors.ts
@@ -22,10 +22,6 @@ export type LocalEmbeddingWorkerFailureError = Error & {
   signal?: NodeJS.Signals | null;
 };
 
-const LOCAL_EMBEDDING_WORKER_FAILURE_CODES = new Set<string>(
-  Object.values(LOCAL_EMBEDDING_WORKER_ERROR_CODES),
-);
-
 /** Create a local embedding worker failure with stable metadata fields. */
 export function createLocalEmbeddingWorkerFailureError(params: {
   message: string;
@@ -43,13 +39,3 @@ export function createLocalEmbeddingWorkerFailureError(params: {
     ...(params.cause !== undefined ? { cause: params.cause } : {}),
   });
 }
-
-/** Narrow unknown errors to local embedding worker lifecycle failures. */
-export function isLocalEmbeddingWorkerFailure(
-  err: unknown,
-): err is LocalEmbeddingWorkerFailureError {
-  return (
-    err instanceof Error &&
-    LOCAL_EMBEDDING_WORKER_FAILURE_CODES.has(String((err as { code?: unknown }).code))
-  );
-}
diff --git a/packages/memory-host-sdk/src/host/query-expansion.test.ts b/packages/memory-host-sdk/src/host/query-expansion.test.ts
index 77db808f1dcf..3008444e455a 100644
--- a/packages/memory-host-sdk/src/host/query-expansion.test.ts
+++ b/packages/memory-host-sdk/src/host/query-expansion.test.ts
@@ -1,6 +1,6 @@
-// Memory Host SDK tests cover query expansion behavior.
+// Memory Host SDK tests cover query keyword extraction behavior.
 import { describe, expect, it } from "vitest";
-import { expandQueryForFts, extractKeywords } from "./query-expansion.js";
+import { extractKeywords } from "./query-expansion.js";
 
 describe("extractKeywords", () => {
   it("extracts keywords from English conversational query", () => {
@@ -182,32 +182,3 @@ describe("extractKeywords", () => {
     });
   });
 });
-
-describe("expandQueryForFts", () => {
-  it("returns original query and extracted keywords", () => {
-    const result = expandQueryForFts("that API we discussed");
-    expect(result).toStrictEqual({
-      original: "that API we discussed",
-      keywords: ["api", "discussed"],
-      expanded: "that API we discussed OR api OR discussed",
-    });
-  });
-
-  it("builds expanded OR query for FTS", () => {
-    const result = expandQueryForFts("the solution for bugs");
-    expect(result).toStrictEqual({
-      original: "the solution for bugs",
-      keywords: ["solution", "bugs"],
-      expanded: "the solution for bugs OR solution OR bugs",
-    });
-  });
-
-  it("returns original query when no keywords extracted", () => {
-    const result = expandQueryForFts("the");
-    expect(result).toStrictEqual({
-      original: "the",
-      keywords: [],
-      expanded: "the",
-    });
-  });
-});
diff --git a/packages/memory-host-sdk/src/host/query-expansion.ts b/packages/memory-host-sdk/src/host/query-expansion.ts
index 60855052f0e9..5f4c01b25047 100644
--- a/packages/memory-host-sdk/src/host/query-expansion.ts
+++ b/packages/memory-host-sdk/src/host/query-expansion.ts
@@ -774,28 +774,3 @@ export function extractKeywords(
 
   return keywords;
 }
-
-/**
- * Expand a query for FTS search.
- * Returns both the original query and extracted keywords for OR-matching.
- *
- * @param query - User's original query
- * @returns Object with original query and extracted keywords
- */
-export function expandQueryForFts(
-  query: string,
-  opts?: { ftsTokenizer?: "unicode61" | "trigram" },
-): {
-  original: string;
-  keywords: string[];
-  expanded: string;
-} {
-  const original = query.trim();
-  const keywords = extractKeywords(original, opts);
-
-  // Build expanded query: original terms OR extracted keywords
-  // This ensures both exact matches and keyword matches are found
-  const expanded = keywords.length > 0 ? `${original} OR ${keywords.join(" OR ")}` : original;
-
-  return { original, keywords, expanded };
-}