Any model, under your policy
Bring your own Anthropic, OpenAI or Gemini key, or use Fours-hosted models. Admins choose which providers are allowed and in what order, and turns fail over automatically.
Build business apps by describing them
Insulin is an AI platform for business, built by Fours. Describe the app you need, and Insulin plans, designs and builds it for you, under your control and meeting your security and compliance requirements.
Early access. Request a demo to get started.
Works with the systems your business runs on
See every integration in the docs- CRM and sales
- Co-sell
- Data and analytics
- Messaging and email
- Sign-in
- AI models on your own keys
- Work, code and files
Insulin Apps builds the business apps you describe.
Dashboards, request and approval flows, trackers, and portals for customers and partners. Planned with you before any code is written, built in a sandbox, and kept behind roles you control.
Explore Insulin AppsFrom a sentence to a working app
Describe
Say what you need in plain English. Insulin asks who will use the app and what each of them needs to get done before it writes anything.
Plan
You get a short plan: the pages, forms and tables, and the workflow each role follows. Nothing is built until you approve it.
Build
Insulin writes a real app with its own backend and database and runs it in a live preview. Refine it in chat, by marking up the preview, or in the code.
Secure
Decide who can open, use, edit and share it, for the whole organization or person by person. Keys go in encrypted secrets only an Owner or Admin can set, and sign-in stays with the platform, never inside generated code.
Version
Every save is a version. Restoring one rolls forward, so nothing is lost, and you can download the full project at any time.
Illustrative sample data — not customer results.
A form for reps to request a private-offer discount, approved by deal desk.
Who will use it? Sales repsDeal deskFinance
What does each of them need to do? Rep: submit a requestDeal desk: approve or send back
SkipContinue
Illustrative sample data — not customer results.
- Pages
- Request form · Review queue · Request detail
- Data
- Requests: customer, discount, term, reason, status
- Workflows
- Sales rep submits a request
Deal desk approves or sends it back
Edit planApprove and build
Illustrative sample data — not customer results.
PreviewCodeDataTerminal
CustomerGlobex
Discount12%
Term36 monthsMake this a dropdown
Send to deal desk
Illustrative sample data — not customer results.
Organization
Everyone at AcmeUser
People
DanaAdmin
SamEditor
PriyaViewer
Secrets encrypted · values never shown again
PRICING_API_KEY••••••••••CRM_TOKEN••••••••••Only an Owner or Admin can set a secret. Editors see the names.
Illustrative sample data — not customer results.
- v5Term is a dropdownCurrent
- v4Queue sorted by oldest firstRestore
- v3Reason field is requiredRestore
- v2Deal desk can send a request backRestore
- v1First buildRestore
Download project
When an app is ready, publish it to your team, or to your customers and partners on your own domain.
One builder for every kind of business app
Build apps for your team, your customers and your partners.
Dashboards your team checks every morning
Charts and tables over the data your team keeps in the app, or brings in from a CSV.
- Charts, tables and detail views
- Filters by owner, region or period
- Read-only for anyone with the Viewer role
Example promptA dashboard of discount requests by week and status, with the largest open deals.
Illustrative sample data — not customer results.
Open14
Approved38
Median wait1.6 d
| Largest open | Value | Status |
|---|---|---|
| Umbrella | $210,000 | In review |
| Globex | $126,500 | In review |
| Acme Corp | $84,000 | Sent back |
Requests with a workflow for every role
A rep submits, deal desk approves or sends it back. Insulin builds the steps each role takes, from request to decision.
- Forms with validation and defaults
- A workflow per role, planned with you
- Every request kept in the app’s own database
Example promptA form for reps to request a private-offer discount, approved by deal desk.
Illustrative sample data — not customer results.
| Customer | Discount | Term | |
|---|---|---|---|
| Initech | 8% | 24 mo | Approve |
| Globex | 12% | 36 mo | Send back |
| Umbrella | 5% | 12 mo | Approve |
Signed in as Viewer: actions are hidden for you.
Trackers that move work through stages
Boards and tables with owners, due dates and notes, built around how your team already works.
- Board and table views
- Owners and due dates
- Notes kept with each item
Example promptAn onboarding tracker for new customers, by stage and owner.
Illustrative sample data — not customer results.
Kickoff
InitechOwner: Dana · Oct 23
Integration
GlobexOwner: Ravi · Oct 18
UmbrellaOwner: Sam · Oct 21
Live
Acme CorpOwner: Dana · Oct 9
Portals for your customers
Give customers one place to submit requests and follow their status, served on your domain and behind your identity provider.
- On a domain you own
- Sign-in through your identity provider
- The same roles and encrypted secrets as every app
Example promptA portal where customers submit support requests and see their status.
Illustrative sample data — not customer results.
Your requests Signed in as a Globex user
| Request | Opened | Status |
|---|---|---|
| Add two seats | Oct 12 | Done |
| Invoice in EUR | Oct 14 | In progress |
| Renewal quote | Oct 15 | New |
Portals for your partners
Let partners register deals and follow approvals in an app you own, instead of in a shared spreadsheet.
- Deal registration with your own fields
- Approvals by your channel team
- Every partner sees only what their role allows
Example promptA partner portal for registering deals, with approval by the channel team.
Illustrative sample data — not customer results.
Register a dealSigned in as an Initech partner
Submit for approval
What every app comes with
Not a mockup and not a prototype. Each app is a real project you can run, secure and download.
- Backend Its own server code, written for the app
- Database Its own database, filled by your team or a CSV import
- Workflow The steps each role takes, from request to approval, built into the app
- Access Owner, Admin, Editor, User and Viewer roles, for everyone or person by person
- Secrets API keys and credentials, encrypted. Only an Owner or Admin sets them, and a value is never shown again
- Model Picked per app: your own key, or Fours-hosted models
- History 50 saved versions; restoring one rolls forward
- Code Download the complete project at any time
- Custom domain Serve an app at a hostname you own
Every app has an owner and five roles
Share an app with the whole organization at one role, then raise individual people above it.
- Personal apps stay with the person who made them.
- Being an org admin grants nothing on an app by itself.
- Only an app's Owner or Admin can manage its secrets.
| Action | Owner | Admin | Editor | User | Viewer |
|---|---|---|---|---|---|
| Open the app | Allowed | Allowed | Allowed | Allowed | Allowed |
| Use it and chat with it | Allowed | Allowed | Allowed | Allowed | Not allowed |
| Edit and restore versions | Allowed | Allowed | Allowed | Not allowed | Not allowed |
| Share and set access | Allowed | Allowed | Not allowed | Not allowed | Not allowed |
| Manage secrets | Allowed | Allowed | Not allowed | Not allowed | Not allowed |
| Delete the app | Allowed | Allowed | Not allowed | Not allowed | Not allowed |
Agents in Slack that keep working after you log off.
Ask where you workDM Insulin or @mention it in any channel.
Approve the changesAnything that edits a record waits for your Allow.
Read the result laterScheduled jobs DM you when they finish.
How a request runs, from your message to the result
Security and control, built in from the first prompt
The same workspace runs your apps and your Slack agents, so one set of rules governs both.
Enterprise-grade security, certified
Insulin runs under the same controls as the Fours platform. Customer data is stored and processed in the US, on AWS.
Changes wait for approval
Agents read within your permissions. Anything that changes a record asks the person who made the request first.
Where your team already works
Slack, Microsoft Teams direct messages and the Insulin console all reach the same agents.
-
Slack DMs, mentions and threads, with approval cards -
Microsoft Teams One-on-one direct messages - Insulin console Apps, agents, jobs and their history
The workspace behind both
Apps and Slack agents share one workspace: the same agents, jobs, knowledge bases and connections. Every product is also under Products in the menu.
- Agents Specialist agents for any workflow, with the model you choose per agent.
- Jobs Scheduled, on-demand or event-triggered runs toward a goal, with a full run history.
- Knowledge Bases Answers grounded in your own documents.
- Agent Marketplace Ready-made agents to install and adapt.
- Inbox App Drafts replies in your voice and holds them for your approval.
- Pricing Pay for the AI you use, with no per-seat fees.
Latest from the blog
How teams put AI to work on real business systems: governance, agent design and rollout. Read every post on the Insulin blog
- Integrations AI Agent for Stripe: Payouts, Invoices, Tax
- Workspace AI Token Costs: Why Long Conversations Cost More
- Knowledge Bases How to Answer Security Questionnaires With AI
Shipping notes go in the Insulin changelog, and the reference docs live in the Insulin documentation.
Frequently asked questions
What is Insulin?
Insulin is an AI platform for business, built by Fours. Teams describe the apps they need and Insulin builds them with roles and encrypted secrets, and agents in Slack handle scheduled work that keeps running after people log off.
How is Insulin Apps different from Lovable or Base44?
Insulin Apps is built for business. It plans each app with you before writing code, runs every build command in a sandbox, keeps keys in encrypted secrets, and puts every app behind five roles. Sign-in stays with the platform, never inside generated code.
Can I build apps for customers and partners?
Yes. Publish a finished app to your team, or to customers and partners on your own domain, with sign-in through your identity provider and the same roles and encrypted secrets as every app.
Can an agent keep working when I'm offline?
Yes. Ask in Slack for a recurring job, such as every weekday at 9am, and it runs on schedule while you're away. When a job you own finishes, Insulin sends you a Slack DM with the result.
Will an agent change records without asking?
In a Slack channel, anything that isn't clearly a read waits for an Allow or Deny that only the person who asked can click. Agents use that person's own connections and permissions.
Which AI models can I use?
Your own Anthropic, OpenAI or Gemini key, or Fours-hosted models. Admins choose which providers are allowed and in what order, and turns fail over across connected providers.
Is Insulin secure enough for company data?
Insulin runs under the same controls as the Fours platform: SOC 2 Type II, ISO/IEC 27001, GDPR and CCPA. Customer data is stored and processed in the US, on AWS.
Is insulin.dev part of Fours?
Yes. Insulin is a product of Fours (Suger, Inc.), built into the Fours console and published on insulin.dev. Both sites declare the same publisher in their structured data: one company, two sites.
Is Insulin related to medical insulin?
No. Insulin is a software product from Fours — an AI platform that builds secure business apps from a description. It is unrelated to the hormone, to diabetes care, or to any medical or pharmaceutical product.
See Insulin on your own work
Insulin is in early access. Book a demo to get started.