# Fours Insulin

Fours Insulin is a general-purpose AI platform for business work, built by Fours — chat, agents, knowledge bases, jobs, and custom apps that teams across finance, sales, operations, support, and data use to run their daily work. It is built into the Fours console and opens as a desktop rather than a single chat page: each feature is its own app — Chat, Marketplace, Knowledge Base, Custom Apps, Files, Inbox, and more, plus Jobs — in a window you can move, resize, and keep open beside the others. Use it to ask about your offers, entitlements, co-sell deals, and revenue in plain language, to hand repeated work to an agent, and to build small internal tools without leaving Fours.

Switch into it with the **New** control in the console top bar; **Classic** takes you back, and your choice is remembered next time you sign in. Nothing else is needed to start — no API keys, no separate install — though an agent can only reach the third-party tools someone has connected in the **Settings** app.

Insulin's product overview and pricing are on its own site, [insulin.dev](https://www.insulin.dev/).

## Start here

1. **[Getting Started](/insulin/getting-started/)** — the desktop, dock, and app launcher, the keyboard shortcuts, and how to move between the classic console and Insulin.
2. **[Agents](/insulin/agents/)** — the built-in Insulin assistant, plus catalog and custom agents with their own instructions, model, allowed integrations, skills, and knowledge bases, and the conversation you hold with one: streaming replies, tool calls, plan approvals, model selection, attachments, and memory.
3. **[Marketplace](/insulin/marketplace/)** — browse the catalog and install pre-built agents and skills, either privately or, as an org admin, for the whole organization.

## Ground answers in your own content

- **[Knowledge Bases](/insulin/knowledge-base/)** — named collections of uploaded files, crawled websites, and synced connectors, indexed for hybrid vector and keyword search so an agent answers from your documents rather than from general knowledge.

## Bring your team into the conversation

- **[Channels](/insulin/channels/)** — a shared thread where several teammates and several agents work in one place; `@mention` an agent to direct a question at it. Sending requires the USER role or higher.

## Let work run without you

- **[Jobs](/insulin/jobs/)** — one-off agent runs plus standing watches that fire on a cron schedule or on an incoming event, each leaving a run record you can open and inspect.
- **[Inbox](/insulin/inbox/)** — connect Gmail or Outlook and let Insulin sort incoming mail into your own categories, then draft replies in your learned writing style for you to approve. Rules can also fire on a **CRM trigger** — a Salesforce opportunity, HubSpot deal, or Microsoft Dynamics 365 opportunity changing stage — to draft the follow-up email, DM you on Slack, or queue a CRM action for you to run.

## Build a tool instead of a chat

- **[Custom Apps](/insulin/custom-apps/)** — describe the dashboard, form, or review screen you want, refine it with the AI builder, and share the result with your team.

## Know what it costs

- **[Billing](/insulin/billing/)** — what your organization pays Fours for Insulin: the six metered resources, $100 of free credit every month, a live credit balance you can attribute by person, app or model, your own monthly spending limit and automatic top-up, and what pauses when the credit runs out.

## Scope and limits

:::info
**Inbox sends nothing on its own.** Every AI-drafted reply waits in **Approvals ▸ Pending** until you review it, and sending takes a second confirmation. The one exception is an auto-send rule you write yourself — and even that sends only when one exact filter matches, never puts your customer or knowledge-base data in what it sends, and holds anything its pre-send check flags for you to review. Inbox connects **either Gmail or Outlook** — both are supported, but only one can be the Inbox mailbox at a time, and switching between them deletes the old provider's stored mail.

**Integrations are permissioned.** Any member can see the organization's integrations, but only an org admin can connect or disconnect them. Personal connections such as Gmail, Google Calendar, Google Drive, and Gong belong to you alone and are available only to your own agents and apps.

**Insulin is licensed.** If your organization's license is invalid or expired, a banner appears across the top of the workspace; contact Fours at [sales@suger.io](mailto:sales@suger.io) to restore access.
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