@HaiTai
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co-founder of @userlens_hq (YC P26). Let AI agents talk to your users. Viet born 🇻🇳 - building in Helsinki - SF
Helsinki, Finland
Joined February 2023
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The yacht welcoming party for YC F26 batch was awesome.
Thanks to @brexHQ, @supabase, @vouch_group for sponsoring and give the founders (myself included) a chance to learn how to be ambitious, and where the ambitions is directed.
YC’s newest batch gives you a glimpse of where innovation and attention is heading. Getting a chance to have a good time with the new founders always inspires 🤩
Anyone can become a power user of your product, if your product meets them where they are.
Much like how anyone can get good at a skill, given enough time and correct guidance. We're building the adoption harness for all software.
That's @userlens_hq's entire premise.
Your users got an OK answer from your AI. Do they know what to ask next?
For most users, that’s where progress stops.
They’ve found a prompt that works. They need help discovering what comes after it.
That’s the difference between two kinds of adoption:
Feature adoption: Users discover features, try them, and build more advanced workflows.
Agent adoption: Users learn how to guide AI toward the outcome they actually want.
Moving users along that second curve means showing them a concrete next step at the moment they’re ready to take it.
That’s why we built Lumi by @userlens_hq
Lumi reads product usage and conversation traces, recognizes when a user is ready to go further, and nudges them with a concrete next step toward their goal.
Hai Ta retweeted
Last night, we launched In Production — a new @OpenRouter event series where our customers take the stage and demo what they’re actually building with AI.
Less talk about what AI could do.
More of what’s already in production.
Thank you @alexatallah @HaiTa @userlens_hq @gregpr07 @browser_use @olam_labs
Hai Ta retweeted
We were “In Production” last night.
One of my favorite things is seeing what startups are building and how @OpenRouter fits into their stack.
Thank you @sensho, @gregpr07, and @HaiTa Ta for helping us kick off the series. Loved watching how agents went shopping, played games, and created custom user journeys.
🤖 Made with AI
It’s going to be an epic event
Join us for In Production, a new series showcasing what companies are actually building and shipping with AI.
Founders from @olam_labs, @browser_use, and @userlens_hq will demo what they’re building, share lessons from production, and unpack the models powering their products and where OpenRouter fits into their stack.
Plus, our @alexatallah will demo OpenRouter live. Bring your spiciest questions!
Hai Ta retweeted
If you build AI agents for fun, I want to give you $10,000
@lemma_ x @CommaCapital hosting a virtual Multi-App AI Agent Hackathon
The challenge: Build one useful, multi-step AI agent that connects to and takes action across at least three external apps
🥇 $10,000
🥈 $4,000
🥉 $1,000
And all three winning teams get guaranteed interviews with us
Quick details
> Judged by @PhillipLii and @akkkkiira from @ArgaLabs
> Sunday, Sep. 13, 9AM-5PM
> Teams of 1–4 people
> Fully virtual
Link in comments
cookie banner for agent
I’m excited to share that we've added a consequential hint to the WebMCP spec! Here’s what you need to know about it:
For site devs: consequentialHint should be set to true when WebMCP tools may perform a high-stakes action: anything that might need explicit user permission in order to execute. If you’re going to make a purchase, send an email, or book travel, it would be beneficial to set this to true.
annotations: {
consequentialHint: true
}
For agent/model devs: the agent should regard this hint as a time to take a step back, ask for user verification- if there’s an alignment tool critic, it should be judging whether or not a consequential action is appropriate given the user’s request.
The interesting thing about hints like this, unlike other web specs, is that both the site and the agent have to get it right for this to work well. If one side exposes a hint and the other doesn’t honor it, it’s not doing much. And alternatively, if the site dev doesn’t expose but the agent is looking for it… you get it.
But combined, it’s powerful. It can create a safeguard against generating an action a user might not want or be expecting. And it gives more tools to developers to have precision in what should be occurring on their site. So the collective effect can keep users safer.
Most of the step change I made in learning anything is by having someone who knew better pointing out where I need to level up, at the righ time.
So we carried the same approach to @userlens_hq.
Your users get better at adopting your product by timely nudges, when they are ready to level up, based on their current level.
I’d be much more interested in how Astra can manipulate the after effects + blender + elevenlabs + higgsfield + imagegen stack.
Then you truly have everything you need to create full length animation/movie.
Hot take: You should learn the basics of video editing...
AI is about to get really good at Davinci, Premiere, After Effects, and more.
If you have no experience in the timeline, that will be equivalent to vibe coding with no coding experience. The timeline is the codebase.
And... with AI, you can learn these platforms so quickly. When you get stuck just ask AI what to do.
And you only need to know the basics.
I'd start here w/ davinci or premiere
- How the timeline works
- Sequences and nested sequences
- How audio tracks and mixing works
- How keyframes and animations work
- How to cut, trim, and pace your videos
- How to color grade videos
- How to layer B-roll, text, and graphics
- How effects, transitions, and masks work
- How to frame, crop, and guide the viewer’s attention
> users signing up to userlens.io (yay 😊)
> low conversion at database integration step (nay ☹️)
> build usepotion.lol (notion-like platform) as sample analytics data to show how @userlens_hq would nudge users to adopt potion
Does being good at poker correspond to how cracked founders are? We put YC S26 founders on a private yacht, with a $10 000 cash prize from @MonacoGTM to find out.
One of the best events on the SF water!
Brought to you by @userlens_hq, @MongoDB, @MonacoGTM