# Lobby (lobbyvoices.com)

> Lobby is an AI front desk for small businesses: it answers every inbound call 24/7, books appointments, captures leads, and speaks English and Mexican Spanish — switching mid-call when the caller does. Beyond the product, lobbyvoices.com hosts free, no-signup tools, a free no-key developer API, and a public MCP server for AI agents.

## Product

- [How it works](https://lobbyvoices.com/how-it-works): What happens when Lobby answers a call.
- [Voices](https://lobbyvoices.com/voices): Hear the receptionist voices (Mía, Diego, Sofía).
- [Pricing](https://lobbyvoices.com/pricing): Plans and what's included.
- [Demo-call library](https://lobbyvoices.com/hear): Demo calls by trade.
- [Plumbing demo call](https://lobbyvoices.com/hear/plumber): Burst-water-heater call booked for the next morning.
- [HVAC demo call](https://lobbyvoices.com/hear/hvac): Late heatwave AC call booked into the first cooling window.
- [Electrical demo call](https://lobbyvoices.com/hear/electrician): Partial-outage call with safety triage and a booked visit.
- [Dental demo call](https://lobbyvoices.com/hear/dentist): Cracked-tooth call booked with intake basics.

## Free tools (no signup)

- [All tools](https://lobbyvoices.com/tools): Hub for twelve free phone tools, English + Spanish.
- [Phone Answering Report Card](https://lobbyvoices.com/tools/receptionist-test): One real test call to a number you control, graded on six dimensions.
- [Should I Hire a Receptionist?](https://lobbyvoices.com/tools/should-i-hire-a-receptionist): 2-minute quiz with a straight verdict and break-even math.
- [Missed-Call Calculator](https://lobbyvoices.com/tools/missed-call-calculator): What going to voicemail costs per year.
- [IVR / Phone Menu Generator](https://lobbyvoices.com/tools/ivr-generator): Build a phone menu and hear it in a real AI voice.
- [Voicemail Greeting Generator](https://lobbyvoices.com/tools/voicemail-greeting-generator): Professional voicemail greeting, written and voiced.
- [Phone Greeting Generator](https://lobbyvoices.com/tools/phone-greeting-generator): The first ten seconds of every call.
- [On-Hold Message Generator](https://lobbyvoices.com/tools/on-hold-message-generator): On-hold lines that sell while callers wait.
- [Business Jingle Generator](https://lobbyvoices.com/tools/business-jingle-generator): A tiny audio identity for any business.
- [Free Hold Music Library](https://lobbyvoices.com/tools/hold-music): Original royalty-free hold-music MP3s, mastered for phone lines, free for commercial use.
- [Hold Music Doctor](https://lobbyvoices.com/tools/hold-music-doctor): Private browser check for phone-line clarity, level, clipping, silence, mono safety, and loop quality.
- [ElevenLabs Agent Prompt Generator](https://lobbyvoices.com/tools/elevenlabs-agent-prompt-generator): AI writes a production-grade ElevenLabs agent system prompt.
- [ElevenLabs vs Hume teardown](https://lobbyvoices.com/elevenlabs-vs-hume): The same angry-customer call answered by both voice stacks.

## Developer API & MCP server (free, no key)

- [Developers](https://lobbyvoices.com/developers): Docs for the free API and MCP server.
- [OpenAPI spec](https://lobbyvoices.com/api/v1/openapi.json): Machine-readable spec for POST /api/v1/phone-script, /api/v1/agent-prompt, /api/v1/missed-call-cost.
- MCP server (Streamable HTTP): https://lobbyvoices.com/api/mcp — tools: write_phone_script, write_ivr_menu, generate_elevenlabs_agent_prompt, calculate_missed_call_cost, simulate_receptionist_call (role-play a call against the real receptionist engine), get_demo_call_number, should_i_hire_a_receptionist, save_my_receptionist (save a built/simulated receptionist for a real business, with consent). No auth; per-IP rate limits.

## Optional

- [About](https://lobbyvoices.com/about): Who builds Lobby.
- [Security](https://lobbyvoices.com/security): How call data is handled.
- [Spanish site](https://lobbyvoices.com/es): Everything above, en español mexicano.