YC Summer 2026 (S26) founder

Karen Serfaty

Founder of Agentcard, debit cards for AI agents.

Agentcardfintech22 public signals

Company

Karen Serfaty is listed as a founder of Agentcard. Agentcard.sh is a debit card for AI agents. Agents can use Agentcard’s API to issue cards and pay for things online autonomously.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. X

    you can now get Doordash from iMessage. really. try it now for free :) text to get started: +1 (628) 309-4547

    you can now get Doordash from iMessage. really. try it now for free :) text to get started: +1 (628) 309-4547

  2. X

    yc: do things that don’t scale @agentcardhq : say no more *puts 1000 agentcard coupon codes in cars in marina* 0:01 / 0:12

    yc: do things that don’t scale @agentcardhq : say no more *puts 1000 agentcard coupon codes in cars in marina* 0:01 / 0:12

  3. X

    Agentcard launches token rewards for B2B purchases

    Agentcard launches token rewards for B2B purchases

  4. X

    finally someone’s doing this (we are doing this)

    finally someone’s doing this (we are doing this)

  5. X

    good morning

    good morning

  6. X

    test in prod

    test in prod

  7. X

    just gave an @agentcardhq coupon to someone who was already using agentcard!

    just gave an @agentcardhq coupon to someone who was already using agentcard!

  8. X

    if you see one of these in the city today tweet a photo and i’ll give you another $5 off your first order kk byee

    if you see one of these in the city today tweet a photo and i’ll give you another $5 off your first order kk byee