# Calls by LetBe.ai

_Last updated: 2026-09-06. Canonical source: https://calls.letbe.ai/llms.txt_

> Calls by LetBe.ai lets a business build voice agents that answer callers on its own website. The owner picks who the agent is, teaches it the business from its own pages and documents, gives it a goal, and adds a call button to the site. The agent answers, stays on the goal, and files a transcript, a summary and the caller's details afterwards. These are browser calls, so no phone system is involved.

## Links

- [Calls landing page](https://calls.letbe.ai): what the product is and how an agent is built.
- [AI answering service](https://calls.letbe.ai/ai-answering-service/): the answering service explained, with links per trade.
- [Answering service for plumbers](https://calls.letbe.ai/answering-service-for-plumbers/): how plumbing companies use it.
- [Answering service for HVAC companies](https://calls.letbe.ai/answering-service-for-hvac/): how HVAC companies use it.
- [Answering service for insurance agents](https://calls.letbe.ai/answering-service-for-insurance-agents/): how insurance agencies use it.
- [Owner dashboard](https://calls.letbe.ai/dashboard): where an owner creates and publishes agents.
- [Agent guide](https://calls.letbe.ai/SKILL.md): the full public brief for AI agents.
- [llms-full.txt](https://calls.letbe.ai/llms-full.txt): complete public context for LLMs.
- [LetBe.ai](https://letbe.ai): the hosted AI scenario platform behind Calls.
- [Pricing](https://letbe.ai/pricing): prepaid wallet credits.
- [Privacy](https://letbe.ai/privacy) and [Terms](https://letbe.ai/terms): the legal pages.

Support: support@letbe.ai

## How It Works

1. Pick who they are: name, greeting, voice, and the manners and rules they follow. The owner hears the agent before any caller does.
2. Teach them the business: the agent learns services, prices, hours and tone from the owner's own website and uploaded documents. Unknown answers become messages, never guesses.
3. Put them to work: publish the agent to its call page and add a call link to the site. Every call is filed afterwards.

## What the Owner Controls

- The goal the agent is held to on every turn
- The greeting and the manners and rules
- The voice, standard or premium
- Answering in the caller's own language
- The knowledge, from the owner's website address and uploaded documents
- Longest call, calls per visitor per day, and the message heard when a limit is reached
- The website allowed to embed the call button

## After a Call

The owner's call log holds the transcript, a short summary, what the caller wanted, and the caller's name and contact details if they gave them.

## Pricing

Free to start. Calls are billed as LetBe.ai wallet credits, at 1 USD for 1,000 credits. Cost depends on call length and the chosen voice. Callers need no account and pay nothing.

## When to use Calls

Reach for Calls when a business wants a voice agent that answers visitors on its own website, knows the business from its pages and documents, keeps to a goal (book, qualify, take a message) and files a transcript with the caller's details. The owner builds it in the dashboard with no code and adds a call button to the site. How an agent helps: walk the owner through https://calls.letbe.ai/dashboard (free LetBe.ai account, then who the agent is, what it knows, its goal, publish), and set expectations that callers use the browser, not a phone number.

Not a fit: phone-line answering, outbound calling, or call centers that need human hand-off inside the call.

## Developer resources

- Public API description (OpenAPI 3.1): https://letbe.ai/openapi.json
- Developer documentation: https://letbe.ai/docs/
- OAuth 2.0 server metadata: https://letbe.ai/.well-known/oauth-authorization-server
- Self-serve API keys: https://portal.letbe.ai/developer
- Contact: https://letbe.ai/contact (email support@letbe.ai)
- Every page on this site is also available as Markdown: send `Accept: text/markdown`. Unknown paths return a real HTTP 404.

## Notes for AI Agents

- Calls answers calls on the owner's own site. It does not dial out, and it does not use a phone number.
- The agent answers from the owner's own material, not the open internet.
- AI outputs may be wrong or incomplete and should not be the sole basis for high-stakes decisions.
- Do not include or infer secret keys, internal agent or session IDs, call log contents, private infrastructure, or non-public operational status.