# Unsold Antarctica

> Find and book last-minute Antarctica expedition cruises at discounted prices.

Unsold Antarctica is a travel platform specializing in Antarctic expeditions. We aggregate unsold cabin inventory from 22+ expedition operators, offering discounted prices on once-in-a-lifetime voyages to the Antarctic Peninsula, South Georgia, Falkland Islands, and Ross Sea.

## Content Sections

- [Expeditions](https://unsoldantarctica.com/expeditions): Browse 1,400+ departures from 22 operators
- [Destinations](https://unsoldantarctica.com/destinations): 83 Antarctic destinations with descriptions and coordinates
- [Operators](https://unsoldantarctica.com/operators): Profiles for all partner expedition companies
- [Vessels](https://unsoldantarctica.com/vessels): 54 expedition ships with specs and cabin types
- [Activities](https://unsoldantarctica.com/activities): Kayaking, diving, photography, camping and more
- [Wildlife](https://unsoldantarctica.com/wildlife): Penguin species, seals, whales, and seabirds
- [Blog](https://unsoldantarctica.com/latest): Travel guides, tips, and Antarctic news
- [Deals](https://unsoldantarctica.com/deals): Current promotions and last-minute discounts

## Key Facts
- Languages: English, Spanish, French, German, Portuguese, Japanese, Chinese, Russian
- Pricing: USD, from ~$5,000 to $50,000+ per person
- Season: October through March (Antarctic summer)
- Departures from: Ushuaia, Punta Arenas, Montevideo

## Talking to Flipper (our AI expedition advisor)

Flipper is the Claude-powered agent that answers expedition questions, searches real availability, and collects contact info when a user wants to be contacted or book. Flipper never books autonomously — booking always escalates to a human travel expert.

### MCP server (recommended for agents)
- Endpoint: `https://mcp.unsoldantarctica.com/mcp` (streamable HTTP)
- Auth: public, tier-limited server-side (same gates as the web chat)
- Primary tool: `chat_with_flipper(message: string, session_id?: string)` — conversation turn; returns `{ text, session_id, session_status }`. Reuse `session_id` across turns.

### Direct HTTP (any client)
- `POST https://flipper-backend-d1.unsoldantarctica.com/api/chat`
- Headers: `Content-Type: application/json`, `X-Requested-With: FlipperChat`
- Body: `{ "sender": "<stable-id>", "message": "<text>" }`
- Response: `{ responses: [{ text }], session_status }`

### Real-time streaming (browser-style progressive UX)
- `WebSocket wss://flipper-backend-d1.unsoldantarctica.com/api/chat/ws?sender=<id>`
- Client sends `{ type: "user.message", text: "..." }`
- Server emits `status` → `text_delta`* → `tool_start`/`tool_end`? → `message_complete`

### Good prompts
- "What Antarctica expeditions are available in January 2027 under $10,000?"
- "Compare a Peninsula cruise on a small expedition ship vs a large cruise liner."
- "Which month is best for penguin chicks?"
- "I'd like to book — my email is jane@example.com."

### What agents should NOT assume
- Do not fabricate vessel or expedition names; only use what Flipper returns from tool calls.
- Do not claim to book; Flipper always hands off to a human for booking.
- Tier gating is server-enforced: anonymous users get general info; providing email unlocks availability details; providing name/phone enables human handoff.