diff --git a/packages/core/src/plugin/boot.ts b/packages/core/src/plugin/boot.ts
index b59769a0c..dc73a4a09 100644
--- a/packages/core/src/plugin/boot.ts
+++ b/packages/core/src/plugin/boot.ts
@@ -20,7 +20,6 @@ import { PluginV2 } from "../plugin"
 import { AccountPlugin } from "./account"
 import { AgentPlugin } from "./agent"
 import { CommandPlugin } from "./command"
-import { SkillPlugin } from "./skill"
 import { ConfigProviderPlugin } from "../config/plugin/provider"
 import { EnvPlugin } from "./env"
 import { ModelsDevPlugin } from "./models-dev"
@@ -100,7 +99,6 @@ export const layer = Layer.effect(
       yield* add(AccountPlugin)
       yield* add(AgentPlugin.Plugin)
       yield* add(CommandPlugin.Plugin)
-      yield* add(SkillPlugin.Plugin)
       for (const item of ProviderPlugins) {
         yield* add(item)
       }
diff --git a/packages/core/src/plugin/skill.ts b/packages/core/src/plugin/skill.ts
index 7c89ac8e3..e5c52494e 100644
--- a/packages/core/src/plugin/skill.ts
+++ b/packages/core/src/plugin/skill.ts
@@ -4,31 +4,8 @@ export * as SkillPlugin from "./skill"
 
 import { Effect } from "effect"
 import { PluginV2 } from "../plugin"
-import { AbsolutePath } from "../schema"
-import { SkillV2 } from "../skill"
-import customizeOpencodeContent from "./skill/customize-opencode.md" with { type: "text" }
-
-export const CustomizeOpencodeContent = customizeOpencodeContent
 
 export const Plugin = PluginV2.define({
   id: PluginV2.ID.make("skill"),
-  effect: Effect.gen(function* () {
-    const skill = yield* SkillV2.Service
-    const transform = yield* skill.transform()
-
-    yield* transform((editor) => {
-      editor.source(
-        new SkillV2.EmbeddedSource({
-          type: "embedded",
-          skill: new SkillV2.Info({
-            name: "customize-opencode",
-            description:
-              "Use ONLY when the user is editing or creating opencode's own configuration: opencode.json, opencode.jsonc, files under .opencode/, or files under ~/.config/opencode/. Also use when creating or fixing opencode agents, subagents, skills, plugins, MCP servers, or permission rules. Do not use for the user's own application code, or for any project that is not configuring opencode itself.",
-            location: AbsolutePath.make("/builtin/customize-opencode.md"),
-            content: CustomizeOpencodeContent,
-          }),
-        }),
-      )
-    })
-  }),
+  effect: Effect.void,
 })
diff --git a/packages/core/test/plugin/skill.test.ts b/packages/core/test/plugin/skill.test.ts
deleted file mode 100644
index 63d028e4e..000000000
--- a/packages/core/test/plugin/skill.test.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-import { describe, expect } from "bun:test"
-import { Effect, Layer } from "effect"
-import { AgentV2 } from "@opencode-ai/core/agent"
-import { FSUtil } from "@opencode-ai/core/fs-util"
-import { SkillPlugin } from "@opencode-ai/core/plugin/skill"
-import { SkillV2 } from "@opencode-ai/core/skill"
-import { SkillDiscovery } from "@opencode-ai/core/skill/discovery"
-import { testEffect } from "../lib/effect"
-
-const it = testEffect(
-  SkillV2.layer.pipe(
-    Layer.provide(FSUtil.defaultLayer),
-    Layer.provide(SkillDiscovery.defaultLayer),
-    Layer.provideMerge(AgentV2.locationLayer),
-  ),
-)
-
-describe("SkillPlugin.Plugin", () => {
-  it.effect("registers the built-in customize-opencode skill", () =>
-    Effect.gen(function* () {
-      const skill = yield* SkillV2.Service
-      yield* SkillPlugin.Plugin.effect.pipe(Effect.provideService(SkillV2.Service, skill))
-
-      expect(yield* skill.list()).toContainEqual(
-        expect.objectContaining({
-          name: "customize-opencode",
-          description: expect.stringContaining("opencode's own configuration"),
-        }),
-      )
-    }),
-  )
-})