Leadbay (YC F25)

We qualify millions of Data-Signal-Scarce leads that couldn't be found before.

[Leadbay (YC F25) @LeadbayAI]

Transforming the job of sales rep today with a $4.3M funding 👇🏽

[Ludo @ludogranger]

Announcing @LeadbayAI $4.3M to kill everything you're doing with sales.

Corgi, Deel, L'Oréal recently told us: "We found in 10 min on Leadbay what we couldn't in 6 months with Clay and a GTM agency."

Leadbay qualifies the millions of data-signal-scarce companies nobody could find before.

This is how it works:

[Ludo @ludogranger]

It's already version 21 of our MCP. We gave it to our users early and they tell us…

"I qualified thousands of companies in under 5 minutes. It would have taken my team a year."

A new world is being built.

And this new world is now just one prompt away — simply type npx -y -p @leadbay/mcp@latest installer in your Claude.

[Ludo @ludogranger]

It's not just another MCP on Claude. 4 reasons it's life-changing:
1. Qualifies the most data-scarce markets with human-like intuition - beyond filters, beyond signals.
2. Adapts to your context from something as simple as a domain.
3. Self-improving: learns from your wins, losses, and even your prompt frustrations.
4. The first UI component library that makes Claude's HTML artifacts actually interactive.

[Ludo @ludogranger]

Last week, @Microsoft and @nvidia asked me to give an avant-première on the @VivaTech stage.
I promise your daily life as a sales rep or marketer won't be the same after the 20-min "Mastering Claude + Leadbay MCP."

[Ludo @ludogranger]

Today, introducing @LeadbayAI MCP.
My bet after building it: the SaaS interface won't exist in 6 months.
The future of sales & marketing teams is one prompt away:
npx -y -p @leadbay/mcp@latest installer

[Leadbay (YC F25) @LeadbayAI]

📺

[Ludo @ludogranger]

Turn on your TV this week.
A big announcement is coming on French national TV for @LeadbayAI.

@BFMTV @simottel

[Ludo @ludogranger]

House of Tan is so vibrant 🌎

[Ludo @ludogranger]

Meet us for the next 15 days. I’ll be on the road with @LeadbayAI across our beautiful France.

[Leadbay (YC F25) @LeadbayAI]

Claude + Leadbay MCP users are 10xing what they can do w/ Sales & Marketing. Take 30' in your week to catch up with what's today possible.

[Ludo @ludogranger]

"We found in 10 minutes on @LeadbayAI what we couldn't find in 6 months with Clay and a GTM agency."

Friday, 30 min, I show you how.
Apply ↓ https://t.co/0KoJevqEjf

[Ludo @ludogranger]

I used to get the question "Are you offering data via API" a LOT. Here is what I answered to our friend from YC @yz_aisdr from @getaisdr

[Ludo @ludogranger]

It might be time to stop doing sales the way teams have in 2026 and start new initiatives - self-improving agents are now available and can 10x reps’ lives.
Request your spot to join an event hosted by YC founders including @milstan
https://t.co/WzYqFHl5m4

[Milan Stankovic @milstan]

You may think the level of change AI has introduced to the world is already huge, but these are in fact just the baby steps. So excited to be here at this time, building the future. Sales talent can’t be replaced. For everything else, we’re building @LeadbayAI

[Leadbay (YC F25) @LeadbayAI]

@Prithvi_Jadwani @ludogranger @milstan try it ! Self-improving agents "improve" over time, this is the end of statics data

[Leadbay (YC F25) @LeadbayAI]

@ipivto @ludogranger @garrytan @milstan Yes, marketing use it of Account Based Marketing
sales use it to reach better prospects. Both finally work together !

[Leadbay (YC F25) @LeadbayAI]

@LamidaGlobal @ludogranger @milstan @LeadpoetAI "Intent-driven AI" means they go after digital companies generating intents. We go after companies that lack intents.

[Ludo @ludogranger]

Announcing @LeadbayAI $4.3M to kill everything you're doing with sales.

Corgi, Deel, L'Oréal recently told us: "We found in 10 min on Leadbay what we couldn't in 6 months with Clay and a GTM agency."

Leadbay qualifies the millions of data-signal-scarce companies nobody could find before.

This is how it works:

[Leadbay (YC F25) @LeadbayAI]

@LeadbayAI x @Sorbonne_Univ_
A 3-year CIFRE PhD to push the science behind qualifying low-data, low-signal SMBs - the invisible economy.

Supervised by Claude Montacie & Victoria Eyharabide (STIH Lab). Industry tutor: @milstan. Student: Yuyan Qian.

Welcome Yuyan.
More soon.

[Leadbay (YC F25) @LeadbayAI]

We had so much fun ! Thanks @BouazizAlice @deel

[Ludo @ludogranger]

Great energy from Paris 🇫🇷 as @LeadbayAI won The Pitch by @deel yesterday at @joinstationf F - $50K secured, Dubai finals next! 🏆

[Leadbay (YC F25) @LeadbayAI]

People with a Taste for great leads are on @LeadbayAI

[Ludo @ludogranger]

Introducing @LeadbayAI's Taste Profile.

There is now a world where you can train agents to work for you.
They qualify your market with human-like intuition. They’re as good as your 15-year experienced sales rep. They qualify your market in minutes, not years.

[Ludo @ludogranger]

Here is the effect of 70 reps prospecting in a room with @LeadbayAI