Sjenkie’s Workshop
Turn one routine
into a machine.
Free GPTs for real business routines. Try one now, or hire me to build one around your workflow.
Free GPTs
Practical tools for tasks you do every week
Sjenkie’s Workshop is a growing collection of practical GPTs built around real routines. Use them for free, see how they work, and find one that fits the way you already work. If you need something more tailored, I also build custom GPTs around specific workflows.
Featured tool
Resume Screener
Review resumes with a sharper lens. This free GPT helps you screen candidates more consistently, spot weak signals earlier, and turn rough first impressions into clearer hiring judgments.
Try Resume Screener →Who it helps
Hiring managers, recruiters, and interview panels who need clearer, evidence-based hiring judgments.
More free tools
Screening
Startup Idea Reviewer
Pressure-test a rough startup idea before you spend months building the wrong thing.
Try it free →Qualification
Website Project Scope Checker
Spot missing scope, hidden complexity, and proposal risk before you send the quote.
Try it free →Screening
Post Authenticity Check
Check whether your post sounds natural before you publish it, then improve it.
Try it free →Drafting
Assumptions & Exclusions Writer
Write clearer proposal boundaries before ambiguity turns into unpaid extras.
Try it free →Screening
Interview Evidence Reviewer
Turn messy interview feedback into a debrief the team can actually use.
Try it free →Summarizing
Scope Creep Extractor
Spot where project work is quietly expanding beyond what was agreed and priced.
Try it free →All 16 GPTs on Sjenkie's Workshop are free to use.
No subscription required. Open any GPT in ChatGPT and start working through it in minutes.
Find all 16 free GPTsFeatured tool
GTM Launch Suite
Plan a launch with more structure. Four focused free GPTs cover briefing, targeting, channel decisions, and readiness - taking you from rough launch thinking to a plan ready to execute.
Explore the GTM Suite →What I build
Custom GPTs for tasks you do every week.
Not a generic AI chatbot. Not a platform subscription. A GPT built around one specific task in your business, your criteria, your language, your output format, so you stop doing it by hand.
The work I do is narrow on purpose. I take one repetitive thing you do every week, define exactly what good output looks like, and build a tool that produces it consistently. No scope creep, no ongoing subscription. You get a link, you use it, it works.
What is a custom GPT?
A custom GPT is a small application that runs inside ChatGPT. You give it a task, paste in your inputs, and it returns a structured output, every time, in the same format.
You get a direct link. Anyone on your team with a ChatGPT account can use it instantly, no extra software, no setup.
Need a hosted web version with your own domain and a database? That’s possible too, from $1,500.
What could I build for you?
Recognise any of these?
If you do the same thing more than a few times a week, it can probably become a tool. These are the most common categories I build in.
Don’t see yours? If it’s repetitive and has a clear output, it’s probably buildable. Ask me.
Evaluate & decide
Screening
Decide who or what is worth your time.
Resumes, leads, vendors, proposals.
Qualification
What do you do with this inbound thing?
Lead triage, project fit, client fit, intake.
Shape & produce
Briefing
Turn messy input into clear action.
Handoffs, task briefs, meeting summaries, job briefs.
Drafting
Get a useful first version fast.
Proposals, scope summaries, onboarding emails, call notes.
Keep things running
Recurring questions
Answer the same thing consistently.
Support replies, FAQs, guest messages, SOPs.
Summarising
Cut through the noise, fast.
Meeting notes, email threads, documents, call debriefs.
Why not just use ChatGPT manually?
Using ChatGPT manually
- Blank slate every time, context is on you to provide
- Depends more on user prompting skill
- Output is less consistent
- Harder to reuse as a shared workflow
Tool built for your workflow
- Context, instructions, and knowledge pre-configured
- Lower prompting burden for the team
- More consistent structured output
- Can be shared by link, with users, or inside a workspace
How custom builds work
From routine to running tool.
01
You bring one routine
Tell me about one task you do repeatedly: screening, qualifying, summarising, briefing. One thing.
02
I scope the tool
A short intake process. I lock in inputs, outputs, and what done looks like. Fixed scope, fixed price.
03
I build it
One focused build. No scope creep, no endless iterations. You get a working tool, not a prototype.
04
You use it
Delivered clean, with a simple handoff. A direct link to your custom GPT, ready to use from day one.
Pricing
Fixed scope. Fixed price.
No retainers, no surprise invoices. You know exactly what you are getting before I start.
Micro Tool
$500
One focused task. Fixed input, fixed output. A custom GPT scoped, built, and delivered. Ready to use from day one, no ongoing dependency.
One workflow. One build. Delivered within a week.
Request a ToolNot included
- Complex third-party integrations
- Multi-step systems or full pipelines
- Custom software or infrastructure
- Unlimited revisions or ongoing iteration
Need more?
From $1,500
A hosted web version, with your own domain, a clean interface, and a database if the workflow needs it. Scoped and fixed-price.
Payment is due before work begins, via a Stripe payment link, card, Apple Pay, Google Pay, and most local payment methods accepted. Optional monthly maintenance available for updates, new iterations, or additional tools, scoped and priced separately.
Frequently asked
Common questions.
Get started
Start with a free GPT. Build from there.
Browse the free GPTs, try one that fits your routine, and see what works. If you need one shaped around your own workflow, that is the next step.