Open source
Open-source AI receptionist you can audit, customize, and self-host
LobbyStack is open source so your team can inspect how calls are handled, modify prompts and routing, and deploy on infrastructure you control. No black-box call logic. No vendor lock-in.
No credit card required. Works with your existing business number.
Source code publicly available for audit and modification
Customize prompts, intake rules, escalation, and integrations
Self-host on your servers or use the managed cloud
Audit the call handling logic yourself
Closed-source AI receptionist platforms keep their routing decisions, prompt structure, and data pipelines private. You cannot verify how calls are handled or what data is retained. LobbyStack publishes the source code so you can inspect every decision point before trusting it with your callers.
- Review how intake questions, routing, and escalation work
- Verify data handling, retention, and privacy controls
- Understand exactly what happens on each call type
Modify prompts, rules, and integrations without a vendor roadmap
When your call workflow changes, you should not have to file a support ticket and wait. Because the code is open source, you can modify greeting scripts, intake questions, booking logic, escalation paths, and downstream integrations directly.
- Change prompts and call flows on your schedule
- Add custom webhooks, CRM connections, and alert rules
- Fork the codebase for agency or multi-tenant deployments
Deploy on infrastructure you control
Self-hosting with LobbyStack means call recordings, transcripts, and customer details never leave your infrastructure. Connect your own SIP trunks, choose your own models, and set your own retention policies.
- Run in containers on your preferred cloud or private environment
- Choose GPT-4, Claude, or local private Llama models
- Own update timing, access policies, logs, and retention windows
Use the managed cloud or self-host on your terms
Open source does not mean you have to manage infrastructure yourself. LobbyStack offers a managed cloud with included voice minutes and support. When you need more control, the same open-source codebase is ready for self-hosted deployment.
- Start on the managed cloud and self-host when requirements change
- Migrate between cloud and self-hosted without losing your configuration
- Use both: cloud for standard lines, self-hosted for regulated workflows
Questions about open-source AI receptionists
What is an open-source AI receptionist?
An open-source AI receptionist is a voice answering platform whose source code is publicly available for inspection, modification, and self-hosted deployment. LobbyStack is open source so teams can audit the call handling logic, customize prompts, and run the system on their own infrastructure.
Why does open source matter for an AI receptionist?
Open source gives you visibility into how calls are processed, what data is stored, and how the AI makes routing decisions. For regulated industries, agencies, and teams with data-control requirements, that visibility is a prerequisite, not a nice-to-have.
Can I self-host LobbyStack?
Yes. LobbyStack can run on your own servers or cloud infrastructure. You control call data, recordings, transcripts, and model choice. See the self-hosted AI receptionist page for deployment details.
Can I change the AI prompts and call flows?
Yes. Because the code is open source, you can modify greeting scripts, intake questions, escalation rules, booking logic, and downstream integrations without waiting on a vendor roadmap.
Does open source mean less support?
Not necessarily. LobbyStack offers managed cloud plans with support, and self-hosted users can access documentation, community resources, and professional implementation services. Open source means more control, not less help.
Is my call data safe in an open-source project?
When you self-host, your call data stays on your infrastructure. When you use the managed cloud, LobbyStack follows standard data handling practices. Open source means you can verify the data handling yourself rather than trusting a black box.
How is this different from a closed-source AI receptionist?
Closed-source AI receptionist platforms keep their call handling logic, prompt structure, and data pipelines private. You cannot audit how decisions are made or customize the system beyond the vendor's configuration surface. LobbyStack lets you inspect, fork, and modify the entire stack.
Where can I find the source code?
The LobbyStack source code is available on GitHub at github.com/lobbystack/lobbystack. You can review it, open issues, and contribute changes.
Inspect, customize, and deploy an AI receptionist you can verify
LobbyStack is open source so you can audit the call logic, modify the workflow, and deploy on your own infrastructure. No black box. No vendor lock-in.
No credit card required. Cancel anytime.