diff --git a/packages/opencode/src/config/config.ts b/packages/opencode/src/config/config.ts
index f1ceb1b4ed39..207648dd394d 100644
--- a/packages/opencode/src/config/config.ts
+++ b/packages/opencode/src/config/config.ts
@@ -382,6 +382,7 @@ export const layer = Layer.effect(
     })
 
     const loadGlobal = Effect.fnUntraced(function* () {
+      if (Flag.OPENCODE_DISABLE_GLOBAL_CONFIG) return {} as Info
       let result: Info = pipe(
         {},
         mergeDeep(yield* loadFile(path.join(Global.Path.config, "config.json"))),
diff --git a/packages/opencode/src/config/paths.ts b/packages/opencode/src/config/paths.ts
index db4b914f76c3..41007c75eb80 100644
--- a/packages/opencode/src/config/paths.ts
+++ b/packages/opencode/src/config/paths.ts
@@ -25,7 +25,7 @@ export const files = Effect.fn("ConfigPaths.projectFiles")(function* (
 export const directories = Effect.fn("ConfigPaths.directories")(function* (directory: string, worktree?: string) {
   const afs = yield* AppFileSystem.Service
   return unique([
-    Global.Path.config,
+    ...(Flag.OPENCODE_DISABLE_GLOBAL_CONFIG ? [] : [Global.Path.config]),
     ...(!Flag.OPENCODE_DISABLE_PROJECT_CONFIG
       ? yield* afs.up({
           targets: [".opencode"],
diff --git a/packages/opencode/src/flag/flag.ts b/packages/opencode/src/flag/flag.ts
index 72c8931f5b71..556962509990 100644
--- a/packages/opencode/src/flag/flag.ts
+++ b/packages/opencode/src/flag/flag.ts
@@ -98,6 +98,9 @@ export const Flag = {
   get OPENCODE_PURE() {
     return truthy("OPENCODE_PURE")
   },
+  get OPENCODE_DISABLE_GLOBAL_CONFIG() {
+    return truthy("OPENCODE_DISABLE_GLOBAL_CONFIG")
+  },
   get OPENCODE_PLUGIN_META_FILE() {
     return process.env["OPENCODE_PLUGIN_META_FILE"]
   },