From 850baac0d4f7f69b4f4d8715f811ed6324d62d22 Mon Sep 17 00:00:00 2001
From: Nook127 <nook127@users.noreply.github.com>
Date: Sun, 5 Jul 2026 04:01:00 +0000
Subject: [PATCH] fix(core): resolve MCP union ambiguity with discriminator

---
 packages/core/src/v1/config/config.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/core/src/v1/config/config.ts b/packages/core/src/v1/config/config.ts
index 2e773f71e256..9cd1d852833e 100644
--- a/packages/core/src/v1/config/config.ts
+++ b/packages/core/src/v1/config/config.ts
@@ -108,7 +108,12 @@ export const Info = Schema.Struct({
     description: "Custom provider configurations and model overrides",
   }),
   mcp: Schema.optional(
-    Schema.Record(Schema.String, Schema.Union([ConfigMCPV1.Info, Schema.Struct({ enabled: Schema.Boolean })])),
+    Schema.Record(
+      Schema.String,
+      Schema.Union([ConfigMCPV1.Info, Schema.Struct({ enabled: Schema.Boolean })]).annotate({
+        discriminator: "type",
+      }),
+    ),
   ).annotate({ description: "MCP (Model Context Protocol) server configurations" }),
   formatter: Schema.optional(ConfigFormatterV1.Info).annotate({
     description: