lobbyvoices-mcp
Official remote MCP server for Lobby, the bilingual AI receptionist. Five free no-auth tools: business phone scripts and IVR menus (English + Mexican Spanish), ElevenLabs agent system prompts, missed-call cost math, and a hire-a-receptionist verdict.
README
Lobby — AI Receptionist Toolkit (MCP server)
The official MCP server for Lobby — the bilingual AI front desk. It gives any AI agent seven free, no-auth receptionist tools, served remotely over Streamable HTTP. No key, no signup, no install.
https://lobbyvoices.com/api/mcp
Connect
Claude Code
claude mcp add --transport http lobbyvoices https://lobbyvoices.com/api/mcp
Cursor · Claude Desktop · any MCP client
{
"mcpServers": {
"lobbyvoices": { "url": "https://lobbyvoices.com/api/mcp" }
}
}
Tools
| Tool | What it does |
|---|---|
write_phone_script |
Writes a business phone script — greeting, voicemail, on-hold, or jingle — in English, Mexican Spanish, or both. Ready to record. |
write_ivr_menu |
Builds a complete IVR / phone-menu script: greeting, numbered options, optional press-9 Spanish switch, operator line. |
generate_elevenlabs_agent_prompt |
Generates a production-grade system prompt for an ElevenLabs conversational agent acting as a phone receptionist. |
calculate_missed_call_cost |
Computes the revenue a business loses to missed calls (monthly + yearly) plus recovery math, break-even days, and ROI. |
simulate_receptionist_call |
Role-play a call against the receptionist call engine — you play the caller, get the transcript, outcome, and automatic EN/ES switch back. |
get_demo_call_number |
A real phone number anyone can call right now to hear the receptionist live, with suggested bilingual scripts. |
should_i_hire_a_receptionist |
Scores a business's phone coverage and returns a verdict — covered, AI front desk, or hybrid — with archetype and leak numbers. |
Every tool declares an outputSchema and returns structuredContent, so agents get typed JSON instead of text to parse.
Try it with curl
curl -X POST https://lobbyvoices.com/api/mcp \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"calculate_missed_call_cost","arguments":{"callsPerWeek":75,"missedRatePct":33,"avgJobValue":380}}}'
Also available as a plain REST API
The same capabilities are exposed as a free, no-key HTTP API — see the developer docs and the OpenAPI spec.
Fair use
No auth required. Per-IP rate limits (AI-backed tools: 2 requests/minute; math and template tools are generous) and hard input caps keep the service healthy. Building something bigger on top? Tell us.
About Lobby
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. This MCP server runs on the same production stack.
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