GCP / Vertex AI Skill

Anthropic on Vertex AI — Critical Quirks

These are failure modes discovered through direct use. Follow exactly.

Model IDs

Use no version suffix for the latest model on Vertex:

// ✅ Correct (gets latest)
model: 'claude-sonnet-4-5'

// ❌ Wrong (version suffix not supported on Vertex)
model: 'claude-sonnet-4-6'

SDK Selection