Independent software studio · Montréal
We put a number on the
decision before you make it.
SilentCoreTech builds and runs five products. Each one takes a call people usually make on instinct — what an AI workflow will cost, which stock to reorder, what to charge, what work went unbilled — and turns it into a figure you can check before you commit.
Products
Data robots
Free calculators
Robot runs
The products
5 shipped or shippingFive separate products, five separate codebases. They share a method, not a platform: measure the thing first, then act on the measurement.
MarginKit
Agencies shipping n8n AI workflows
Prices an n8n AI workflow before it runs — every AI node, every loop, every retry storm — so a fixed quote does not become a loss.
- Python
- n8n
- CLI + browser
- Local-first
Foreshelf
Shopify brands in cosmetics, supplements and food
Watches dead stock, incoming stockouts and batches that expire before they sell — then proposes the fix with the dollars attached.
- Shopify
- FastAPI
- React
- PostgreSQL
- LLM agent
Data robots
Recruiters, researchers and automation builders
A fleet of public-data collection robots on the Apify Store — hiring, reviews, social and marketplaces — priced per row returned, with a hard spend cap.
- Apify
- Python
- Docker
- Pay-per-result
CalcBusiness
Freelancers and small businesses
Take-home pay, margin, sales tax, invoices and PDF tools — all running in the browser, with the formula shown and sources cited.
- Static
- Browser-only
- No signup
- US/CA/UK/AU
Unbilled Work Recovery
Agencies running delivery on monday.com
Tracks agency engagements against their contracts, detects unbilled work, generates the change orders and follows what gets paid.
- monday.com
- Node.js
- TypeScript
- GraphQL
- LLM
Continuous readout
CH 2 — aggregateChannel select
Step through the five01 / 5
MarginKit
Your workflow has a price. See it before your client does.
- Agencies shipping n8n AI workflows
- Live
- marginkit.silentcoretech.com
02 / 5
Foreshelf
Marcus, the AI inventory agent for Shopify.
- Shopify brands in cosmetics, supplements and food
- Live
- foreshelf.app
03 / 5
Data robots
61 data robots. Billed per result.
- Recruiters, researchers and automation builders
- Live
- apify.com/om_kh
04 / 5
CalcBusiness
59 free business calculators. No signup.
- Freelancers and small businesses
- Live
- calcbusiness.com
05 / 5
Unbilled Work Recovery
Find the client work you are giving away.
- Agencies running delivery on monday.com
- Live direct install
- Install on monday.com
How this company works
One studio, several products, one domain.Products, not projects
Every product here has real users or a real store listing. Nothing on this page is a concept — where something is still in development, it says so plainly.
One domain from now on
New products ship as subdomains of silentcoretech.com — marginkit.silentcoretech.com, monday.silentcoretech.com — instead of buying a domain per project. Foreshelf and CalcBusiness keep their own domains because they were established before this consolidation.
Built to be checked
Every product exposes its own arithmetic: cost ranges instead of single fake numbers, stated assumptions, and an explicit list of what the tool does not know.
Money never moves without you
Where a product can spend or send — a purchase order, a supplier email — it runs behind hard caps, an approval step and a cancellation window. There is no fully autonomous mode.
In the pipeline
Planned, not shipped. Listed so the direction is public — each will launch on its own subdomain here.
A personal security scanner for Claude Desktop extensions and MCP servers. Plan complete, not started.
An open-source, semi-autonomous revenue agent — provider-agnostic, security-first. Scaffolded.
E-invoicing, timed to the Verifactu rollout in January 2027.
Field guides
All guides →Long-form guides on the problems these products were built for: agent cost control, inventory forecasting, data collection, pricing and delivery visibility.
AI agents · 9 min read
How to control LLM costs in AI agent workflows
How to price an n8n or LangGraph pipeline before it runs, and the guardrails that stop agent workflows from burning your project margin.
E-commerce · 10 min read
Shopify inventory forecasting: stockouts, dead stock and expiry
Forecast demand from your own Shopify data, set reorder points that account for lead time, and learn when reordering is the wrong move.
Data · 8 min read
Reliable web scraping with Apify actors
Run data collection that stays reliable and cheap: pay-per-result pricing, delta monitoring, staying within the rules, and wiring output into your stack.
Finance · 7 min read
Profit margin vs markup: pricing products correctly
The formulas, the confusion that costs money, landed cost, breakeven and the discount math that quietly erases a quarter's profit.
Agencies · 8 min read
Recovering unbilled agency work and scope creep
Where agency revenue leaks, how to build the evidence trail before you ask for money, and how to write change orders clients sign without friction.
Agencies · 6 min read
How to track retainer overages in monday.com
A practical method for comparing retainer allowance, dated delivery, and the commercial conversation before the month closes.
Agencies · 6 min read
How to reconcile billable hours and invoices
Separate delivered value, billed value, and collected cash so an agency can see what still needs reconciliation.
Agencies · 6 min read
How to track fixed-fee revisions in monday.com
Detect extra revision rounds on fixed-fee work without turning an uncertain scope signal into an automatic charge.
Agencies · 5 min read
T&M cap vs. delivery: a practical reconciliation
Compare time-and-materials delivery with a not-to-exceed cap while keeping exposure separate from an automatic receivable.
Agencies · 7 min read
How to track approvals, invoices, and payments for agency work
Build a simple recovery ledger that follows a case from evidence to decision, invoice, partial payments, and closure.
Frequently asked
What is SilentCoreTech?
An independent software studio based in Montréal that builds and runs five products. It is not an agency — nothing here is billed by the hour — and not a single product either. Each product has its own codebase, its own users and its own release cycle.
Are the products related to each other?
They share a method, not a platform: put a number on the problem before acting on it. MarginKit prices an n8n workflow before it runs, Foreshelf quantifies inventory risk before you reorder, Unbilled Work Recovery quantifies unbilled work before you invoice it, and CalcBusiness does the arithmetic small businesses repeat every week.
Which products can I use today?
Five. MarginKit runs as a free browser analyzer, Foreshelf is on the Shopify App Store, 61 data robots are published on the Apify Store, CalcBusiness offers 59 free calculators, and Unbilled Work Recovery is available for direct installation on monday.com while its Marketplace review is pending.
Why do some products have their own domain and others a subdomain?
Foreshelf and CalcBusiness were established as independent brands before this consolidation, so they keep foreshelf.app and calcbusiness.com. Everything launched from now on ships as a subdomain of silentcoretech.com — starting with marginkit.silentcoretech.com — so each new product inherits the studio's reputation instead of starting from zero on a fresh domain.
How are the data robots priced?
Per result, with a hard spend cap. A failed run costs nothing. Most robots also support delta monitoring, which returns only what changed since your last run, so recurring jobs do not bill you twice for identical rows.
Do these tools collect my data?
This website sets no cookies and runs no analytics or tracking scripts. Each product has its own terms — MarginKit analyses workflows entirely in your browser and never uploads them, CalcBusiness runs entirely in the browser, and Foreshelf processes Shopify store data under the policy published on foreshelf.app.
At a glance
- Root domainsilentcoretech.com
- Products live4 / 5
- Data robots published61
- Free calculators59
- BaseMontréal, Canada
SilentCoreTech is an independent software studio. Each product solves one measurable problem for one clearly defined operator, and states its assumptions, its limits and its price in public.
Products run local-first where the data allows it, are priced without a sales call, and are built so the arithmetic behind every recommendation can be checked.