Sponge

Sponge

Financial infrastructure for the agent economy

San Francisco
3 employees
Seed · $500K

About Sponge

Sponge is the easiest way for agents to hold and spend money, and for businesses to sell directly to them.

For agents: Sponge lets agents hold funds and transact autonomously with other agents and businesses using bank accounts, cards, and crypto. Agents can autonomously purchase services such as email, browser use, and premium data without human involvement.

For businesses: Sponge makes it easy to onboard and accept payments from agents without human interaction. Businesses can sell their services directly to agents with a few clicks, no code changes required.

Company details

Team Size3
LocationSan Francisco

Funding

Total raised

$500K

Last stage

Seed

Investors

Y Combinator

Founders

RL

Rishab Luthra

Co-founder Sponge (YC W26). Ex-Stripe Crypto.

LinkedIn
Eric Zhang

Eric Zhang

Ex-Stripe Staff SWE (5.5 years) who built stablecoin payments and the fiat-to-crypto onramp at Stripe Crypto.

LinkedIn
Jae Choi

Jae Choi

Ex-Stripe SWE (6 years) on Crypto, Ledger/Balances. CS graduate from University of Waterloo (2019).

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.