YC-backed @Mintlify (YC W22) just announced a $45M Series B round, bringing their total funding to $67M, to "accelerate [their] mission of building the knowledge infrastructure for AI."

Read in their blog announcement:

Mintlify now powers documentation for over 20,000 companies, with content reaching more than 100 million people every year. This round accelerates our mission to become the knowledge layer that makes products understandable, usable and discoverable by AI agents.

Think about how you work today. You use Claude for writing. ChatGPT for research. Cursor for code. Maybe Codex for longer tasks.

Each one learns something about you. Your preferences. Your projects. Your decisions. But none of them talk to each other.

So you end up repeating yourself. Re-explaining context. Correcting assumptions that one tool got right weeks ago in a different conversation.

It is like having five assistants who each only remember the conversations they were personally in. They are all smart individually, but collectively they are forgetful.

Built customer support AIs? Then you know the problem. You keep adding rules, paste in a policy here, teach it something there, and after a while you've got 40+ rules stacked up and rule 12 is quietly fighting rule 38. Prompt gets bloated. AI starts making stuff up.

v1.2 is our fix for that.

It learns from your team on its own
Agent replies to a customer, AI turns that into a clean rule in the background. Checks it against everything else first so it doesn't save a duplicate or a contradiction.

Today, the productivity domain in tech is very well developed - there are tools for almost any need!

But at the same time, there s always a feeling that there might be something else, something better. All the time.

What I like about this space is that once people start using tools like Miro, Notion, Trello, ClickUp, etc., they tend to keep testing new things and experimenting with different tools.

I'll start.

Supabase. Found it here three years ago. Thought it was just another backend. Now I can't imagine building without it.

Here's what it does for us at Rankfender:

Auth that doesn't make you crazy. We have users across 120+ countries. Supabase handles sign-ups, logins, password resets, magic links, OAuth with Google and GitHub. It just works. We didn't have to build any of it.

Hey makers!

Lately, I ve been looking closely at how independent builders and small teams are managing AI knowledge bases. It feels like the default "industry standard" is to immediately reach for a complex RAG pipeline and a heavy, paid Vector Database.

But I'm starting to wonder if we are over-engineering this for 90% of standard use cases.

Vector DBs are incredibly powerful for massive scale, but for smaller or non-massive datasets, they can be expensive, complex to query, and act as complete black boxes. If a search returns a weird chunk, diagnosing it is often a nightmare.

We all have that one tool - the unsung hero quietly doing its job and saving you hours every single week.

For me (no surprise ), it s @Clueso

Notion, Obsidian, and Roam are great, but they re not for everyone. Maybe you found something simpler, faster, or just less overwhelming. What s the one productivity tool you actually stick with the one that makes life easier instead of adding more work?

Hey everyone, I ve been playing around with different ways to keep my ideas, research, and drafts in check, but it still feels like I m drowning in research. :P

I ve tried traditional note-taking apps, but they re not flexible. And mind maps? They start out fine but turn into a mess as it gets complex with more data.

I was recently talking with a group of founders, and we went around sharing tools we're using now. Posting my notes for our community here - would love to know what else people are using!

Voice AI toolkit:

- Vapi

Happy Tuesday
What are the most well-designed open-source products from your point of view?
My favorites:

• @Supabase

• @Appwrite

• @Cal.com

• @Dub

• @Documenso

• @Hanko via @lxunos

Would love to have your suggestions
Thanks!