# Rack Attack > Vehicle rack systems (roof, hitch, bike, kayak, ski, cargo, truck bed). Fitment-heavy: products fit specific vehicles in specific configurations. ## For agents - Agent guide: https://rackattack.teifi.dev/agents.md - Full instructions: https://rackattack.teifi.dev/llms-full.txt - MCP server (streamable HTTP): https://rackattack.teifi.dev/api/mcp - JSON tool proxy: https://rackattack.teifi.dev/api/tool ## Key idea Fitment must be queried, not guessed. Resolve fit type → year/make/model → body → disambiguating property (e.g. roof type) → find_fitting_racks.