curl -sS https://api.anthropic.com/v1/messages \ -H "authorization: Bearer $(security find-generic-password -s 'Claude Code-credentials' -w | jq -r .claudeAiOauth.accessToken)" \ -H "anthropic-version: 2023-06-01" \ -H "anthropic-beta: oauth-2025-04-20" \ -H "content-type: application/json" \ -d '{ "model":"claude-opus-5-5", "max_tokens":64, "system":"You are Claude Code, Anthropic'\''s official CLI for Claude.", "messages":[{"role":"user","content":"Hello, world!"}] }'