# LobbyStack

> Probe-verified (tier 2 of 3). Last checked 2026-08-23. 4 of 5 capability checks passed.

- host: lobbystack.com
- url: https://lobbystack.com/
- category: ai receptionist software
- type: saas
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-08-23 against rubric v1. 4 of 5 checks passed.

- PASS — Markdown negotiation
- PASS — Markdown twin at a predictable URL
- PASS — llms.txt
- PASS — API catalog
- fail — MCP server answers

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **buy** — "Free: $0/month with 30 voice minutes, Starter: $30/month, Pro: $100/month" → `https://lobbystack.com/pricing/`
- **query_api** — "OpenAPI: https://lobbystack.com/openapi.json" → `https://lobbystack.com/openapi.json`

## Summary

LobbyStack is open-source AI receptionist software providing 24/7 phone answering, lead qualification, appointment booking, and call routing for small businesses.

## Context

3 sites in this index share the category "ai receptionist software"; 2 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known-Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark