Sponge

About

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.

Founders

• 
  Eric Zhang· Founder

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

  LinkedIn ↗
• 
  Jae Choi· Founder

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

  LinkedIn ↗
• 
  Rishab Luthra· Founder

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

  LinkedIn ↗

Product launches · 1 launch

• Sponge: Financial infrastructure for the agent economy ↗▲ 30Feb 17, 2026

  The easiest way for agents to hold and spend money, and for businesses to sell directly to them

Change history · none recorded