diff --git a/packages/opencode/test/server/httpapi-exercise/environment.ts b/packages/opencode/test/server/httpapi-exercise/environment.ts
index 4594f5f329a..84a07a2cf6e 100644
--- a/packages/opencode/test/server/httpapi-exercise/environment.ts
+++ b/packages/opencode/test/server/httpapi-exercise/environment.ts
@@ -13,6 +13,7 @@ process.env.XDG_CACHE_HOME = path.join(exerciseGlobalRoot, "cache")
 process.env.KILO_DISABLE_SHARE = "true"
 process.env.KILO_DISABLE_SESSION_INGEST = "true" // kilocode_change - isolate the exerciser from async Kilo session sync
 process.env.KILO_DISABLE_PRESENCE = "1" // kilocode_change - presence now has a default Event Service URL; never open real sockets from the exerciser
+process.env.KILO_DISABLE_CODEBASE_INDEXING = "vscode-no-workspace" // kilocode_change - route scenarios do not need an indexing worker per temp project
 export const exerciseConfigDirectory = path.join(exerciseGlobalRoot, "config", "opencode")
 export const exerciseDataDirectory = path.join(exerciseGlobalRoot, "data", "kilo") // kilocode_change