diff --git a/packages/core/src/plugin/provider/google-vertex.ts b/packages/core/src/plugin/provider/google-vertex.ts
index 2993152748..3da7caf4e7 100644
--- a/packages/core/src/plugin/provider/google-vertex.ts
+++ b/packages/core/src/plugin/provider/google-vertex.ts
@@ -147,7 +147,9 @@ export const GoogleVertexAnthropicPlugin = PluginV2.define({
           // Continental multi-regions (eu, us) require Regional Endpoint Platform
           // domains; the default {region}-aiplatform.googleapis.com does not resolve.
           ...((location === "eu" || location === "us") && project && !evt.options.baseURL
-            ? { baseURL: `https://aiplatform.${location}.rep.googleapis.com/v1/projects/${project}/locations/${location}/publishers/anthropic/models` }
+            ? {
+                baseURL: `https://aiplatform.${location}.rep.googleapis.com/v1/projects/${project}/locations/${location}/publishers/anthropic/models`,
+              }
             : {}),
         })
       }),
diff --git a/packages/opencode/test/provider/provider.test.ts b/packages/opencode/test/provider/provider.test.ts
index 3a2d34f560..8e3276dbab 100644
--- a/packages/opencode/test/provider/provider.test.ts
+++ b/packages/opencode/test/provider/provider.test.ts
@@ -1553,10 +1553,7 @@ it.instance("Google Vertex: uses REP endpoint for Claude continental multi-regio
     yield* set("GOOGLE_CLOUD_PROJECT", "test-project")
     yield* set("VERTEX_LOCATION", "eu")
     const provider = yield* Provider.Service
-    const model = yield* provider.getModel(
-      ProviderID.make("google-vertex"),
-      ModelID.make("claude-sonnet-4-6@default"),
-    )
+    const model = yield* provider.getModel(ProviderID.make("google-vertex"), ModelID.make("claude-sonnet-4-6@default"))
     const language = yield* provider.getLanguage(model)
     expect(languageBaseURL(language)).toBe(
       "https://aiplatform.eu.rep.googleapis.com/v1/projects/test-project/locations/eu/publishers/anthropic/models",
@@ -1585,10 +1582,7 @@ it.instance("Google Vertex: keeps regional Claude endpoints unchanged", () =>
     yield* set("GOOGLE_CLOUD_PROJECT", "test-project")
     yield* set("VERTEX_LOCATION", "europe-west1")
     const provider = yield* Provider.Service
-    const model = yield* provider.getModel(
-      ProviderID.make("google-vertex"),
-      ModelID.make("claude-sonnet-4-6@default"),
-    )
+    const model = yield* provider.getModel(ProviderID.make("google-vertex"), ModelID.make("claude-sonnet-4-6@default"))
     const language = yield* provider.getLanguage(model)
     expect(languageBaseURL(language)).toBe(
       "https://europe-west1-aiplatform.googleapis.com/v1/projects/test-project/locations/europe-west1/publishers/anthropic/models",