platform · inferred from evidence
Google Cloud Vertex
A hosted platform for deploying and running models, including Opus 5.5.
- Anthropic 400 on computer use after a model upgrade: the tool type is now computer_toolset_20260801
Computer use calls that worked before return 400 invalid_request_error on Opus 5.5. Covers migrating from computer_20251124 to computer_toolset_20260801, dropping the beta header, and updating the agent loop. Not for 401 auth errors or othe