Stop Doing By Hand What Software Can Do For You

We map the work your team repeats every day, then automate it: flows between your systems, AI that answers from your own data, documents read and filed without anyone retyping them.

One supplier invoice, before and after
By hand Automated
9 steps 1 step
6–8 minutes under 20 seconds
waits until Monday runs overnight
Free consultation (+84) 987 356 150

2 weeks

From audit to first flow live

One process, measured before and after

40+

Flows built and running

Across client systems and our own

100%

AI calls logged with their cost

Per request, per flow, per month

Zero

Client data used for training

Written into the contract, not just promised

How It Actually Works

One Automation, Node By Node

Pick a situation. Every flow has the same shape: something triggers it, AI does the judgement work, and the result lands in the systems you already use.

A website lead, qualified and in your CRM, in under a minute

  1. Trigger Form submitted A lead arrives from your site, a landing page or an ad.
  2. AI step Read and score AI reads the message and works out the need, the budget signal and the urgency.
  3. Action Create in CRM Lead created with source, campaign and score already filled in.
  4. Action Notify the owner The right salesperson gets it on Zalo or Telegram with a suggested reply.

Result No lead sits unread overnight, and nobody retypes a form into the CRM.

A supplier invoice, checked and posted to accounting

  1. Trigger Invoice arrives By email, upload, or into a shared Drive folder.
  2. AI step Extract the fields Supplier, tax code, line items, totals and due date, read from a PDF or a photo.
  3. AI step Check against the order A mismatch in price, quantity or tax is flagged instead of passed on.
  4. Action Post and file Clean rows into accounting, the original filed and searchable.

Result Your clerk reviews the exceptions instead of typing every invoice.

A customer question, answered from your own documents

  1. Trigger Question asked On your website, on Zalo OA, or inside your app.
  2. AI step Search your content Retrieves the actual passages from your docs, prices and policies.
  3. AI step Answer with sources Answers in your tone, citing where it came from, or says it does not know.
  4. Action Hand over when needed Unclear or high-value questions go to a person with the whole thread attached.

Result Routine questions answered at 2am, and nothing invented to fill a gap.

The numbers are on your phone before the first meeting

  1. Trigger Schedule fires Every morning, or at the end of every shift.
  2. Action Pull the data Sales, ads, stock and support tickets, straight from each system.
  3. AI step Explain the change What moved, by how much, and the most likely reason why.
  4. Action Send the brief A short message on Telegram, Zalo or email. No dashboard to open.

Result Managers read three lines instead of opening four dashboards.

A list of companies, enriched and kept current

  1. Trigger A list or a segment A spreadsheet, a target segment, or a search you want tracked.
  2. Action Collect Public registry, website and contact data gathered on a schedule.
  3. AI step Clean and classify Deduplicated, tagged by industry, obvious junk dropped.
  4. Action Into your sheet or CRM Appended where your team already works, with the source kept.

Result CSlant runs this shape at scale on Vietnamese business-registry data.

  • Trigger
  • AI step
  • Action

Simplified for clarity. A production flow also carries retries, logging, and an approval step wherever the action cannot be undone.

What We Build

Four Things, Done Properly

AI projects usually fail on plumbing rather than on models. These four are where automation reliably pays for itself.

Workflow Automation With n8n

The steps nobody should still be doing by hand: copying between systems, chasing approvals, assembling the same report every week. Built as flows you can read, on an engine that runs on your own server.

What you get

  • n8n self-hosted on your infrastructure, or on ours
  • Your systems connected: CRM, accounting, sheets, email, chat
  • Retries and alerts so a failure is visible, not silent
  • Every flow documented so your team can change it
  • Before-and-after measurement on the process it replaced
  • n8n
  • Webhooks
  • REST APIs
  • Queues & cron

AI Assistants On Your Own Data

An assistant that answers from your documents, prices, policies and operational data, cites where the answer came from, and says it does not know rather than inventing. On your website, in Zalo, or inside your app.

What you get

  • Your content indexed and kept in sync as it changes
  • Answers that cite their source passage
  • Refusal behaviour tuned so gaps are admitted, not filled
  • Hand-over to a human with the full conversation
  • Question logs showing what customers actually ask
  • RAG
  • Multi-model
  • Vector search
  • Zalo OA

Document Processing

Invoices, contracts, delivery notes, CVs and forms, read into structured data and pushed into the system that needs them. Including photographs and scans, including Vietnamese.

What you get

  • Field extraction from PDF, image and scan
  • Validation against your existing records before anything is posted
  • Exceptions queued for a person, the rest straight through
  • Originals filed and searchable
  • Accuracy measured on your own sample, before go-live
  • OCR
  • PDF parsing
  • Extraction
  • Validation

AI Inside The App You Already Run

You do not need a new product. Search that understands what the user meant, automatic categorisation, summaries, recommendations, anomaly alerts, added to the software your team already opens every day.

What you get

  • Search that works on meaning, not just keywords
  • Automatic tagging, routing and categorisation
  • Summaries of long records and threads
  • Recommendations based on your own history
  • Added to your current codebase, whatever it is written in
  • Smart search
  • Classification
  • Summaries
  • Anomaly alerts

Breadth

Twenty Automations We Build Most Often

Pick a group. Each line is one flow: what sets it off on the left, what you get on the right. Yours is probably close to one of these.

  • Sales & Marketing When A lead fills in any form on your site Then Scored, assigned to an owner, and in the CRM with its campaign attached
  • Sales & Marketing When A lead goes quiet for three days Then A follow-up drafted in your tone, waiting for the salesperson to approve
  • Sales & Marketing When A deal moves to the quoting stage Then Quote generated from your price list and sent as a branded PDF
  • Sales & Marketing When A new product or service is published Then Social and newsletter copy drafted per channel, queued for review
  • Operations When An order is confirmed Then Stock reserved, warehouse notified, customer updated, all in one pass
  • Operations When A delivery note is photographed on site Then Read, matched to the order, and filed against the right job
  • Operations When A shift ends Then Handover summary posted to the group chat with what is still open
  • Operations When A booking is made Then Confirmed, reminded by Zalo, and rescheduled without a phone call
  • Finance When A supplier invoice lands in the inbox Then Fields extracted, checked against the order, posted or flagged
  • Finance When A payment hits the bank Then Matched to the invoice, receipt sent, ledger updated
  • Finance When Month end Then Reconciliation pack assembled, exceptions listed first
  • Customer Support When A customer asks something you have answered before Then Answered from your own documents, with the source cited
  • Customer Support When A ticket arrives Then Categorised, prioritised, routed to the team that owns it
  • Customer Support When A review or complaint is posted publicly Then Sentiment flagged and the right person alerted within minutes
  • Data & Reporting When Every morning Then A three-line brief on what moved and the most likely reason
  • Data & Reporting When A number crosses a threshold you set Then Alert with the context, not just the metric
  • Data & Reporting When A list of target companies Then Enriched from public sources, deduplicated, kept current
  • Dev & DevOps When A commit is pushed Then Tests, build and deploy, with the result in your chat
  • Dev & DevOps When An error spikes in production Then Grouped, explained in plain language, and assigned
  • Dev & DevOps When A pull request opens Then First-pass review notes attached before a human reads it

Not on the list? The shape is the same. Describe the steps your team repeats and we will tell you honestly whether automating them pays off.

Integrations

It Has To Talk To What You Already Use

Automation is only worth anything if it reaches the systems your work actually lives in. These are the connections we build and maintain most.

Automation engine

  • n8n (self-hosted)
  • Webhooks
  • REST & GraphQL
  • Queues & cron

AI models

  • Claude, GPT, Gemini…
  • Open models, self-hosted
  • Embeddings & vector search
  • OCR & vision

Messaging

  • Zalo OA & ZNS
  • Telegram
  • Email
  • Slack & Discord

Business systems

  • Google Sheets & Drive
  • CRM & ERP
  • MoMo & VNPay
  • PostgreSQL & Redis

Agent interfaces

  • MCP servers
  • Function calling
  • WebMCP
  • llms.txt

n8n runs on your own server or on ours, your choice. Either way the credentials stay in your environment and we hand over the whole setup.

Before And After

The Same Process, Twice

One concrete example: a supplier invoice, from the moment it arrives to the moment it is posted in accounting.

Steps a person performs

By hand Nine, every single invoice

Automated One, and only on exceptions

Time per invoice

By hand Six to eight minutes

Automated Under twenty seconds

Typing mistakes

By hand Found at month end, if at all

Automated Mismatches flagged before anything is posted

Evenings and weekends

By hand Waits until Monday

Automated Runs anyway

Audit trail

By hand Email threads and memory

Automated Every step logged, with who approved what

Cost of the tenth invoice

By hand The same as the first

Automated Effectively nothing

The numbers that matter are yours, not ours. The process audit measures your current steps first, so the comparison after go-live is against something real.

Trust

The Questions You Should Be Asking Any AI Vendor

Automation that touches money, customers or records has to be accountable. These four are built in from the first flow rather than bolted on after an incident.

Your Data Stays Where You Put It

n8n, your database and your documents sit on infrastructure you control. Model calls send only the fields a step actually needs, and nothing is used to train anyone's model. That is in the contract, not just in a sales deck.

Every AI Call Logged, With Its Cost

Each request records what was sent, what came back, which model answered, how many tokens it took and what it cost. You can see the monthly spend per flow, and we can show you exactly why an answer was what it was.

A Human Approves What Cannot Be Undone

Sending money, emailing a customer, deleting a record: those steps stop and wait for a person. Low-risk steps run unattended. You decide which is which, per flow, and you can change it later.

When A Flow Misbehaves, You Can Stop It

Every run is recorded with its input and output, so a bad batch can be identified and reversed instead of guessed at. Flows can be paused individually without taking down the rest, and failures alert a person rather than failing quietly.

How We Start

First Flow Live In About Three Weeks

No six-month discovery phase. We find the one process with the clearest payback, automate it, measure it, and only then talk about the next.

  1. Week 1

    Process audit

    We sit with the people doing the work and write down every step, who performs it and how long it takes. You keep the map whether or not you hire us.

    You end up with

    • A map of the current process
    • A shortlist ranked by payback
    • A fixed quote for the pilot
  2. Weeks 2–3

    Pilot one flow

    The single highest-payback process, built end to end on your infrastructure and measured against the numbers we captured in week one.

    You end up with

    • One flow running in production
    • Before-and-after measurement
    • Handover notes your team can act on
  3. Month 2 onward

    Expand

    The next flows reuse the connections, credentials and conventions already in place, so each one costs less to build than the one before it.

    You end up with

    • A flow library you own
    • Shared connections and credentials
    • Your team trained to make small changes
  4. Ongoing

    Run and monitor

    Alerts when a flow fails, a monthly report on cost and volume, and changes made when your process changes. Automation that nobody watches is a liability.

    You end up with

    • Failure alerts to a person
    • Monthly cost and volume report
    • Changes as your process changes

Engagement

Three Ways To Work With Us

Start small and prove it on one process. Expand when the first one has paid for itself. Hand the running of it to us if you would rather not watch it.

Pilot

From $1,500 / one process

Prove it on a single process before committing to anything bigger.

Includes

  • Process audit with your team
  • One flow built end to end
  • Running on your infrastructure
  • Before-and-after measurement
  • Handover notes and a walkthrough
Get A Quote

Managed

From $900 / month

We keep it running, watch it, and change it when your process changes.

Includes

  • Monitoring with alerts to a person
  • Failures triaged and fixed
  • Monthly cost and volume report
  • A budget of change requests each month
  • Model and dependency upgrades
  • Priority response on business days
Get A Quote

Indicative figures. The exact quote comes after the process audit, which is where the real scope becomes visible.

Real Projects

What CSlant Has Shipped

A few highlights. Everything else is on our Works page.

See all projects →

Before You Start

Questions We Get About AI Automation

The honest answers, including the cases where automation is not worth it.

The CSlant Team

Talk To Us About Your Process
Q1 We are not sure what to automate. Where do we start?

With the process audit. We sit with the team doing the work, write down every step and time it, then rank what we found by payback. It is normal to discover that the process everyone complains about is not the one worth automating first. You keep the map either way.

Q2 Does our data get sent to OpenAI or Google?

Only the fields a step genuinely needs, and only to the model you approve. n8n, your database and your documents stay on infrastructure you control. Nothing is used for training. If a process cannot leave your network at all, we can run it against a model hosted inside it.

Q3 What happens when the AI gets something wrong?

Two safeguards. Anything irreversible waits for a person to approve, so a wrong answer costs a click rather than a customer. And every run is logged with its input and output, so a bad batch can be found and reversed rather than guessed at. We tune assistants to say they do not know instead of inventing an answer.

Q4 Do we need n8n, or can you use something else?

n8n is our default because it self-hosts, the flows are readable by your team, and there is no per-task licence growing with your volume. If you already run Make, Zapier or Power Automate we will work with it. If a flow is better as plain code in your own codebase, we will say so.

Q5 How much does it cost to run every month?

Two parts: the server n8n runs on, which is usually small, and the model usage, which depends on volume. Every AI call is logged with its cost, so you see the real monthly figure per flow rather than an estimate. Most pilots land in the tens of dollars a month, not the hundreds.

Q6 Will this replace people on our team?

In our experience it moves them, rather than replaces them. The work that disappears is retyping, copying between systems and assembling the same report every week. What is left is the judgement part, which is also the part people would rather be doing. We will tell you plainly if a flow only makes sense as a headcount cut, because that changes how you should plan it.

Q7 Can you work with the systems we already have?

Usually yes. Anything with an API, a webhook or a database we can reach is straightforward. Older systems without an API are still reachable through scheduled file exchange or the screens themselves, which is slower but works. We check this during the audit, before quoting, so there are no surprises.

Q8 When is automation not worth it?

When the process runs a handful of times a month, when it changes shape every time, or when the rules live only in one person's head and nobody agrees on them. In those cases the honest advice is to fix or document the process first. We would rather say that than sell you a flow that breaks in a month.

Q9 Who owns what you build?

You do. Flows, configuration, prompts and any code we write are handed over, and your team is trained to make small changes without us. Your credentials stay yours. There is no component that only we can operate.

Q10 Which AI model do you use?

Whichever one fits the step. Classification and extraction run on a small fast model, because the volume is high and the quality difference is nil; drafting and reasoning go to a stronger one; anything that cannot leave your network runs on an open model hosted inside it. We work with Gemini, GPT and Claude behind one interface, alongside self-hosted open models, so changing a model later is a configuration change rather than a rebuild. Every call is logged with the model that answered and what it cost, so you can see the trade-off instead of taking our word for it.

Q11 How long before we see the benefit?

The pilot is designed so you can see it in about three weeks, measured against the numbers we captured in week one. If the first flow has not paid for itself in a quarter, we picked the wrong process and we will say so.

Start With One Process

Tell Us What Your Team Keeps Doing By Hand

A short call is usually enough to tell whether automating it pays off. If it does not, we will say so.