diff --git a/packages/coding-agent/src/tools/yield.ts b/packages/coding-agent/src/tools/yield.ts
index d0d821333..7deebb724 100644
--- a/packages/coding-agent/src/tools/yield.ts
+++ b/packages/coding-agent/src/tools/yield.ts
@@ -63,6 +63,7 @@ function hasUnresolvedRefs(schema: unknown): boolean {
 	const record = schema as Record<string, unknown>;
 	if (typeof record.$ref === "string") return true;
 	for (const key in record) {
+		if (key === "const" || key === "default" || key === "enum" || key === "examples") continue;
 		if (hasUnresolvedRefs(record[key])) return true;
 	}
 	return false;
diff --git a/packages/coding-agent/test/tools/yield.test.ts b/packages/coding-agent/test/tools/yield.test.ts
index 3365ce5ad..53e0980ea 100644
--- a/packages/coding-agent/test/tools/yield.test.ts
+++ b/packages/coding-agent/test/tools/yield.test.ts
@@ -441,4 +441,25 @@ describe("YieldTool", () => {
 			error: undefined,
 		});
 	});
+
+	it("does not treat literal $ref fields inside enum values as unresolved schema references", async () => {
+		const tool = new YieldTool(
+			createSession({
+				outputSchema: {
+					enum: [{ $ref: "literal" }],
+				},
+			}),
+		);
+
+		expect(tool.strict).toBe(true);
+		const result = await tool.execute("call-literal-ref-enum", {
+			result: { data: { $ref: "literal" } },
+		} as never);
+		expect(result.details?.data).toEqual({ $ref: "literal" });
+		await expect(
+			tool.execute("call-invalid-literal-ref-enum", {
+				result: { data: { $ref: "different" } },
+			} as never),
+		).rejects.toThrow("Output does not match schema");
+	});
 });