Build the tools, not the agent.
Read the decision“I see we are wasting way too much time trying to get the in-app UI and features to work correctly, while we have the MCP surface pretty much fully operational already.”
AI product designer and engineer
I build fast, decide, and ship.
HYVIRAL is the proof.
Production-ready AI products, from spec to launch. I design HYVIRAL, direct the AI agents that code it, and decide what ships.
Owner · Intent & acceptance
I decide what to build, what counts as done and what may spend money. The agents work inside those calls.
How the team of agents worksBuild · Agent-led delivery
One coding agent owns each change, from the bug report to the deploy, working from a written specification.
One owner per fixReview · Fresh perspective
A second agent that never saw the work reviews every change before it ships. Tester agents then use the product as a customer would.
Testing through the customer’s doorThe product
Their assistant asks.
HYVIRAL does the work.
HYVIRAL gives a creator’s own AI assistant, such as Claude, the tools to read their audience, make images and video and turn long recordings into short posts.
The editing goes as far as a human editor’s: a long recording is cut, cleaned up and captioned, and the best moments become short posts.
The assistant connects through MCP, the open standard that lets AI assistants use outside tools, and every paid step shows its price in credits, HYVIRAL’s prepaid units, before it runs.
Their AI assistantClaude or any assistant, signed in
The web appSign-up, plans, accounts
HYVIRAL’s tools82 tools, one rulebook
Audience numbersOne saved summary per creator
CreditsPostgres and Stripe
Video workEditing, rendering, export
One set of numbers, everywhere.
| Content page | Weekly report | Their assistant | |
|---|---|---|---|
| Before | 1,240 | 1,182 | No data |
| After | 1,240 | 1,240 | 1,240 |
Illustrative numbers. The “No data” is the real April case.
Read the decision“This ensures LLMs and the UI use identical data.”
Marketing
Marketing,
made with the product.
“Are you tired of your videos never going viral?”
A 75-second paid ad: 17 AI-generated shots on a clifftop, cut to a 91 BPM lo-fi bed that comes in only twice, with motion graphics built around the presenter.
- Made with HYVIRAL
generate_imagegenerate_videogenerate_musicvideo_export- Coded
- The motion graphics, the cut and the sound effects, written by Claude under my direction
- Spent
- 28,169 credits
“This entire video was made by an AI agent.”
A showcase Reel where titles, charts and cuts land on the music’s measured 122 BPM beat grid.
- Made with HYVIRAL
generate_videogenerate_voiceovergenerate_musicvideo_export- Coded
- Titles, charts and transitions, written in Remotion by Claude under my direction
- Spent
- 3,729 credits
“Give your AI agent superpowers.”
A walking-slides carousel: each superpower switches on as the presenter passes, and every feature shown is a real HYVIRAL tool today.
- Made with HYVIRAL
generate_imagegenerate_videogenerate_music- Coded
- The green-screen key, the walk tracking, the ten slides and the sound effects
- Spent
- 2,543 credits
“One message did all my editing chores.”
A real 16-second raw take, cut to 5.5 seconds by one cleanup call and one targeted cut, then captioned and exported.
- Made with HYVIRAL
video_clean_talking_headvideo_cutvideo_captionsvideo_export- Coded
- The case-study page and the slide animation
- Spent
- Part of 6,834 credits for these three posts
“Send your agent one message. Get a week of posts back.”
A 19-second ad built on a real batch run: seven raw takes went in, and HYVIRAL returned seven finished posts in 19 min 12 s.
- Made with HYVIRAL
generate_videovideo_clean_talking_headvideo_overlaysvideo_export- Coded
- The node graph and the motion graphics, written in Remotion by Claude under my direction
- Spent
- 7,328 credits
Engineering cases
The hard parts,
and what I chose.
How it was built
One person, a team of agents.
5,500+ hours in, one month produces five times the work.
11 to 15 October 2026That week: 373 commits · 6 written specifications · 15 database changes
So far9,453 commits 1,001 written specifications 831 database changes
CommitsWritten specificationsDatabase changes
How the work ran
Tasks typed into a chat window, every change checked by hand.
How it runs today
Written specs, a reviewer that never saw the work, tester agents, and an agent team that takes a feature from spec to production with little input from me.
About
Guilherme Rohden
I am an AI product designer and engineer from Brazil. I started HYVIRAL in June 2025 to give creators a content toolkit that edits real video, and I have designed, built, marketed and run it since.
Marketing is the other half of the work: I write the copy, make the carousels and reels, and run the funnels. Everything on hyviral.com, from the pricing page to the Instagram series, is mine.
Before HYVIRAL I spent ten years as a partner in a wood export business, a year as a freelance graphic designer, and a lifetime in Photoshop, where I started at twelve. I built my first website at fourteen.
- Based in
- Itapema, Brazil · 27.09° S, 48.61° W
- Citizenship
- Luxembourg and Brazilian citizen, with the right to work anywhere in the EU
- Languages
- Portuguese, English and Spanish
- Open to
- Product engineer, design engineer and founding engineer roles with European and US teams, remote or relocating; freelance product design and build for AI products.
Code & records
Read the source
behind each decision.
Let’s talk
Building something that
has to work in the real world?
Open to product engineer, design engineer and founding engineer roles with European and US teams, remote or relocating, and to freelance product work.