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This repository was archived by the owner on May 15, 2026. It is now read-only.
Users who need multi-region Vertex AI endpoints (eu/us) for data residency or geographic routing cannot select them in the Roo Code UI.
Reproduction steps
Open Roo Code v3.53.0 settings
Select "Google Vertex AI" as API provider
Open the "Google Cloud Region" dropdown
Search for eu or us multi-region options — they are not present
Expected result
eu and us multi-region endpoints should be available in the dropdown alongside global and specific regions (e.g. us-east5).
Actual result
Only global and specific regional endpoints are listed; eu and us multi-region are missing.
Variations tried (optional)
Verified via curl that aiplatform.googleapis.com/v1/projects/.../locations/eu/... and .../locations/us/... resolve correctly (HTTP 200). Also note that with @anthropic-ai/vertex-sdk < 0.8.0, these regions would produce 404 due to incorrect hostname construction (eu-aiplatform.googleapis.com). PR #11242 bumps the SDK to fix this. See also #8571 for the same hostname bug affecting global.
Problem (one or two sentences)
The Vertex AI provider region dropdown does not include
euandusmulti-region endpoints for Anthropic Claude models. These are valid GCP locations documented at https://cloud.google.com/vertex-ai/generative-ai/docs/partner-models/use-claude#regions.Context (who is affected and when)
Users who need multi-region Vertex AI endpoints (
eu/us) for data residency or geographic routing cannot select them in the Roo Code UI.Reproduction steps
euorusmulti-region options — they are not presentExpected result
euandusmulti-region endpoints should be available in the dropdown alongsideglobaland specific regions (e.g.us-east5).Actual result
Only
globaland specific regional endpoints are listed;euandusmulti-region are missing.Variations tried (optional)
Verified via curl that
aiplatform.googleapis.com/v1/projects/.../locations/eu/...and.../locations/us/...resolve correctly (HTTP 200). Also note that with@anthropic-ai/vertex-sdk< 0.8.0, these regions would produce 404 due to incorrect hostname construction (eu-aiplatform.googleapis.com). PR #11242 bumps the SDK to fix this. See also #8571 for the same hostname bug affectingglobal.App Version
v3.53.0
API Provider
Google Vertex AI
Model Used
Any Claude model (e.g. claude-sonnet-4-20250514)