API capability pack for bounded Anthropic Claude REST API operations against https://api.anthropic.com only. Enroll an Anthropic API connection named anthropic that injects the x-api-key header, or an equivalent short-lived bearer credential; no credential is embedded in this manifest. The pack reads model metadata, creates non-streaming Messages API responses, counts message tokens, reads and cancels existing message batches, and reads beta file metadata for model, prompt, evaluation, and AI operations workflows. It bundles a Claude message brief, a token readiness brief, a scheduled model/batch/file operations digest, and an approval-gated workflow for canceling one message batch. Writes are limited to canceling one existing message batch. The pack intentionally excludes streaming, tool definitions, tool-choice controls, server web/search/fetch tools, code execution, MCP connector/tool routing, container/session/managed-agent APIs, message batch creation and deletion, batch result JSONL download, file upload/content download/delete, skills, admin APIs, user-profile headers, arbitrary Anthropic API passthrough, and dynamic outbound callback routing.