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Sponge

paysponge.com · San Francisco · founded 2026 · team 3 employees · Y Combinator Winter 2026 (W26), Active · trust 0/4

Financial infrastructure for the agent economy

This dossier was built by Clark from a public scan on 2026-07-04 and is unclaimed. Is this your startup? Claim it.

Verified facts

Company Name	Sponge source: https://www.ycombinator.com/companies/sponge
Tagline / Description	Financial infrastructure for the agent economy source: https://paysponge.com/
Headquarters Location	San Francisco source: https://www.ycombinator.com/companies/sponge
Year Founded (YC Batch)	2026 source: https://www.ycombinator.com/companies/sponge
Team Size	3 employees source: https://www.ycombinator.com/companies/sponge
Stage / Program	Y Combinator Winter 2026 (W26), Active source: https://www.ycombinator.com/companies/sponge
Founders	Eric Zhang, Jae Choi, Rishab Luthra (all Ex-Stripe Crypto) source: https://www.ycombinator.com/companies/sponge
Legal Entity (State Incorporation)	Not found in public records (likely Delaware C-corp) source: Public search (SEC EDGAR, state registries, Crunchbase)
Contact Email	team@paysponge.com source: https://paysponge.com/; https://www.ycombinator.com/companies/sponge