Custom AI software
Custom AI software and internal tools, built with AI
Portals, field apps, quoting engines and approval tools for the work your ERP does not cover, with AI inside that reads, drafts and asks before it acts. AI coding agents write the code, three people check it, and you own the full source code.
Supplier portal · release 0.4
In reviewSuppliers upload invoices and see when they will be paid
Harbourline Supplies Pte Ltd
- DoneSpec agreedYou and Lester7 screens, 11 rules
- DoneCode and tests writtenAI coding agents26 files, 44 tests
- DoneTest plan runOur tester18 of 18 passed
- DoneBusiness rules checkedOur ERP controllerGST 9%, 3-way match
- WaitingReviewed and releasedLester LawWaiting
Nothing reaches your team until Lester releases it.
Sample data. Harbourline Supplies Pte Ltd is not a real company.
When you need this instead of an ERP
For the work your ERP does not cover
Customer and supplier portals
Customers check orders, deliveries and invoices. Suppliers upload documents. Nobody emails your team to ask.
For exampleSuppliers upload invoices and see when they will be paid.
Field and site apps
Phone-friendly apps for site requisitions, job sheets, photos and sign-offs that go straight into your records.
For exampleA site supervisor requests materials and the project manager approves on their phone.
Quoting and pricing engines
Your pricing rules written into software: price lists, margins, discounts, freight, and approval above a limit.
For exampleA quote goes to a manager only when the margin falls below 15%.
Approval tools
One place for the requests that live in email and chat today: purchases, claims, discounts and credit limits.
For examplePurchase requests routed by amount, with a record of who approved what.
Reporting over messy data
Pull from spreadsheets, exports and older systems, clean the data once, and answer the questions you keep asking.
For exampleMargin by customer across three spreadsheets and an old accounting export.
Integrations
Connect the systems you already run, so nobody retypes data from one screen into another.
For exampleOrders from your online store flow into stock and invoicing.
Which one fits?
This page
Custom AI software
- Your ERP or accounting system works, but one piece of work around it does not
- The gap is a portal, a field app, a quoting tool, a report or a link between systems
- You want to keep the systems you have
Choose this when
AI ERP
- The core records are the problem: stock, orders, jobs or the ledger
- You have outgrown accounting software plus spreadsheets
Choose this when
AI agents and workflows
- The work is reading, drafting and chasing inside the systems you already run
- You want agents that prepare the work and wait for approval
How it is built
Who does what when we build
| Step | Who | What they do | What you get |
|---|---|---|---|
| 1Spec | You and Lester | What they doWe write the workflow down in plain words: the screens, who can do what, the business rules and the tests it must pass. | What you getA written spec you agree before any code is written. |
| 2Code and tests | AI coding agents | What they doAgents write the application code, the database changes and the automated tests to the spec, using our build tooling. Lester runs them and steers the work. | What you getWorking software to try as we go. |
| 3Test plan | Our tester | What they doRuns the test plan against the build, screen by screen and role by role, and sends back what fails until it passes. | What you getTest results for each release. |
| 4Business rules | Our ERP controller | What they doChecks the rules the way your finance team would: GST, approval limits, credit terms, and what each step does to stock and the ledger. | What you getA finance check on every rule that touches money or stock. |
| 5Review and release | Lester Law, founder | What they doReviews every change against our review checklist and releases it. Nothing ships without his release. | What you getOne accountable person for every release. |
The steps, the review checklist and the people behind them are on how we work.
AI inside
Software that reads, drafts, answers and asks first
Document reading
It reads the documents you get
Invoices, delivery orders, purchase orders and forms are read into fields, then matched against your records.
Supplier S-014 · 3 Nov 2026
To: Harbourline Supplies
Pallet wrap 500mm
40 rolls x S$18.00S$720.00
Carton boxes A3
1,200 x S$1.40S$1,680.00
SubtotalS$2,400.00
GST 9%S$216.00
TotalS$2,616.00
Read from the PDF
- Supplier
- S-014
- Invoice
- INV-88213, 3 Nov 2026
- Purchase order
- PO-2610-118Match
- Goods receipt
- GR-2610-207Match
- Subtotal
- S$2,400.00
- GST 9%
- S$216.00
- Total
- S$2,616.00
Quantities and prices match the PO and goods receipt. Waiting for AP approval.
Drafting
It drafts, then waits
Quotes, replies, purchase orders and reminders are drafted from your records and rules. A person approves, edits or rejects.
Quotation Q-2611-042 for customer C-1042
- Pallet wrap 500mm, 60 rolls @ S$24.50
- S$1,470.00
- Carton boxes A3, 2,000 @ S$1.95
- S$3,900.00
- Subtotal
- S$5,370.00
- GST 9%
- S$483.30
- Total
- S$5,853.30
Prices from the customer's price list. Margin is above the 18% floor on both lines.
Answers that cite the record
It answers from your records
Ask a question in plain words. The answer names the records it came from, so anyone can check it.
Which customers are over their credit limit today?
AR ledger as at 6 Nov 2026 · customers C-1042, C-0877
Agents with approval
It waits for a person to say yes
Agents watch for work, prepare it and stop for approval. The record shows who prepared it and who approved it.
09:02 · Purchase order agent
A3 cartons fell below the reorder point. Drafted PO-2611-031 to supplier S-014: 2,000 at S$1.40, S$2,800.00 plus GST S$252.00, total S$3,052.00.
09:02 · Purchase order agent
Sent to the operations manager for approval.
09:40 · Operations manager
Approved PO-2611-031. Moved the delivery to Thursday morning.
09:41 · Purchase order agent
Emailed PO-2611-031 to supplier S-014 after approval.
Sample data. Harbourline Supplies Pte Ltd is not a real company.
Ownership
You own what we build
At handover you get
- The full source code, including the core code it runs on
- Your data, and the database it lives in
- The automated tests written with the code
- The prompts and limits each AI feature works to, with their tests
- Docs and a runbook for running it day to day
- Admin credentials for the system
- A recorded walkthrough of the system
The source code includes the core code your system runs on, so another team can take it over. It can run on our hosting or in your own cloud account. We keep only our build tooling: the generators, module patterns and the instructions our AI coding agents follow.
Handover · Supplier portal
Yours- Source codeThe full repository, including the core code it runs on
- DatabaseYour data and the structure it lives in
- Automated testsWritten with the code
- Docs and runbookSet-up, how it fits together, day-to-day running
- AI settingsThe prompts and limits each AI feature works to, with tests
- Admin credentialsFor the system
- Recorded walkthroughThe system, explained on screen
Sample data. Harbourline Supplies Pte Ltd is not a real company.
Price bands
Published price bands
Quick build
From S$15k
2 to 3 days of build
One workflow or one agent, on your data.
Talk about this bandBuild
S$30k to S$40k
4 to 5 days of build
A set of modules and agents around one part of the business.
Talk about this bandEnterprise programme
Around S$150k
Months, in phases
A full ERP programme, delivered phase by phase.
Talk about this bandAfter go-live, Run (hosting, support and AI usage) and Evolve (monthly build time) are priced in your phase plan. More on the pricing page.
Not what we do here
Websites, apps, games and general software
TeamSleek builds AI ERP, AI agents and AI-built internal tools with AI inside. SleekDigital, the Singapore studio TeamSleek is part of, builds websites, mobile apps, games and general custom software development.
- Websites
- Mobile apps
- Games
- General software
FAQ
Questions about custom AI software
Is AI-written code maintainable?
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What stack do you use?
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Who owns the code?
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How do changes work after go-live?
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Do we need an ERP first?
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Which AI models does the software use, and what data do they see?
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What if the AI model provider changes?
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Bring the tool you wish you had.
In 30 minutes we walk through the workflow, show how it would run on sample data, and tell you which band it fits.