# Lupin > Workspace identity infrastructure for AI agents: email, phone, isolated browser sessions, containers, proxies and connected-app tools. Availability depends on workspace permissions, verification, provider configuration and billing controls. Virtual cards are not available. ## Start here - [Register an agent](https://lupin.sh/agents): Self-contained HTTPS registration, initial limits and human claiming. - [Agent instructions](https://lupin.sh/skill.md): Complete machine-readable workflow, safe key storage and retries. - [Registration JSON descriptor](https://api.lupin.sh/v0/agent/registration): Versioned request and response schemas; no authentication or account creation on GET. - [OpenAPI](https://api.lupin.sh/v0/openapi.json): Current REST operations and authentication. - [Documentation](https://docs.lupin.sh): Human integration guides. - [Field guides and comparisons](https://lupin.sh/blog): Practical articles across email, browsers, sandboxes, app connections, voice, proxies, MCP and operations. - [Article JSON catalog](https://lupin.sh/blog/catalog.json): Published titles, summaries, topics and canonical article URLs. - [Editorial approach](https://lupin.sh/blog/editorial-policy): AI assistance, source reviews, example verification and comparison scope. - [Console](https://app.lupin.sh): Human account and workspace access. ## Product facts - [Email](https://lupin.sh/products/email): Inboxes, reception, messages, threads, drafts, attachments, domains and webhooks. - [Phone](https://lupin.sh/products/phone): Number inventory, SMS and bounded voice calls; provider and ownership prerequisites apply. - [Browsers](https://lupin.sh/products/browsers): Cloudflare Browser Run sessions, page controls and public web research. - [Containers](https://lupin.sh/products/containers): Bounded lifecycle, command, file and port operations. - [Proxies](https://lupin.sh/products/proxies): Provisioning, access and traffic controls. - [Connections](https://lupin.sh/products/connections): App catalog, hosted owner authorization and discovered tools. - [Pricing](https://lupin.sh/pricing): Public plan information. Registering a Free identity does not enable paid resources. ## Initial agent authority Autonomous POST /v0/agent/register needs only a username and saved unguessable Idempotency-Key. It returns a new Free workspace, project, inbox and restricted key. Receive/read email and drafts are enabled; outgoing email, paid resources and key creation are disabled. A verified human can claim ownership at https://app.lupin.sh/claim-agent; the original key remains restricted. Never put keys in URLs. ## Expanded context - [Full integration context](https://lupin.sh/llms-full.txt): Registration instructions and public API boundaries in one document.