Otto Travel — DeepSeek Harness (dsh) plugin

Created: 2026-08-14 · Last Updated: 2026-08-14

Book real flights, hotels, and cars with Otto from inside DeepSeek Harness (dsh). This plugin mounts Otto's remote MCP connector into a dsh composition; the agent then calls Otto's tools like any other, and bookings execute inside Otto (real Spotnana PNR, the authenticated user's stored payment method).

It is the dsh counterpart of Otto's Claude Code / Cowork plugin — both wrap the same production MCP endpoint, https://api.ottotheagent.com/mcp. There is no Otto-side code to change: Otto is already the MCP server, dsh is just another client.

What you get

Otto's tools land in the model namespace as mcp__otto__:

mcp__otto__search_flights · query_flights · book_flight · search_hotels · get_hotel_rooms · book_hotel · search_cars · book_car · get_bookings · cancel_booking · read_skill · list_managed_travelers · read_preferences / write_preference · read_loyalty_programs / write_loyalty_program · task_status

Skill-gating, rate-limiting, input validation, delegate access, and client identity are all enforced server-side — the plugin adds nothing that could weaken them.

Auth — use an Otto API key (not interactive OAuth)

Otto's /mcp endpoint accepts either an OAuth JWT or a static Bearer API key (server/mcp/auth.py). dsh-mcp-client sends a fixed Authorization header, so the API-key path is the right one for dsh (it also works headless, where interactive OAuth does not):

1. Mint a key: https://ottotheagent.com → Settings → Agent API keys (or POST /api/v1/agent/api_keys). Keys are prefixed otto_sk_.