#!/usr/bin/env bash
# STATUS: UNVERIFIED — no cloud credentials in this atlas; snippet follows official docs verbatim-ish
# Source: https://platform.claude.com/docs/en/build-with-claude/claude-on-vertex-ai (retrieved 2026-09-18)
# Requires gcloud with Application Default Credentials. No secrets in this file.
set -eo pipefail
PROJECT_ID="${ANTHROPIC_VERTEX_PROJECT_ID:?set ANTHROPIC_VERTEX_PROJECT_ID}"
LOCATION="${CLOUD_ML_REGION:-global}"
MODEL_ID="claude-haiku-4-5@20251001"   # cheapest Haiku 4.5 id on Google Cloud

# Host depends on the endpoint type:
#   global       -> https://aiplatform.googleapis.com                 (locations/global)
#   us | eu      -> https://aiplatform.${LOCATION}.rep.googleapis.com (multi-region, +10%)
#   us-east5 ... -> https://${LOCATION}-aiplatform.googleapis.com     (regional, +10%; Sonnet 4.6 and earlier)
case "$LOCATION" in
  global) HOST="https://aiplatform.googleapis.com" ;;
  us|eu)  HOST="https://aiplatform.${LOCATION}.rep.googleapis.com" ;;
  *)      HOST="https://${LOCATION}-aiplatform.googleapis.com" ;;
esac

# model is in the URL, anthropic_version is in the body (not a header). Streaming uses :streamRawPredict.
curl -sS "${HOST}/v1/projects/${PROJECT_ID}/locations/${LOCATION}/publishers/anthropic/models/${MODEL_ID}:rawPredict" \
  -H "Authorization: Bearer $(gcloud auth print-access-token)" \
  -H "Content-Type: application/json" \
  -d '{
    "anthropic_version": "vertex-2023-10-16",
    "max_tokens": 8,
    "messages": [{"role": "user", "content": "Reply with OK."}]
  }'
echo