Stub
Stub provides a neutral registry that issues and verifies signed receipts—called stubs—for AI agent actions, capturing what the agent was asked, what it did, what value moved, and what it was not told. The service also offers a Stub Mark, a visual badge drawn from an operator's own receipts, signaling to customers that an agent's incentives are legible and checkable. Stub is built for the rising volume of AI-referred transactions, including agent checkout payments.
- Software Only
Funding
Founders
Founder details are not available yet.
Product
Problem
AI agents increasingly influence purchasing decisions, yet they offer no way for the people they serve to verify whose interests actually shaped those decisions. Commissions, partner deals, and placement fees can silently steer an agent's recommendations, and today there is no mechanism to audit those incentives.
Solution
Stub issues small, signed records — stubs — that capture what the agent was asked, what it did, what value moved, and what it was not told. Each stub is issued by the operator and witnessed by a neutral registry, so the person served can check the receipt without trusting the agent, the company that built it, or Stub itself. Stubs resolve at the registry rather than the seller's own server, ensuring that verification happens on neutral ground. The service also offers a Stub Mark, automatically drawn from an operator's own receipts, that visibly signals to customers that an agent's incentives are legible and checkable. Stub is built for the rising volume of AI-referred transactions, including the growing market for agent checkout payments.
Target Audience
Primary users are businesses and developers operating AI agents that influence purchasing decisions, including e-commerce platforms, comparison providers, and any service standing between a person and their money.
Features
- Eight-field signed stub record capturing the request, action, value moved, and undeclared influences, signed once at issuance and witnessed by the registry on every check
- Registry-based resolution independent of the operator's infrastructure, making receipts verifiable on neutral ground
- Stub Mark: a visual claim badge drawn from an operator's own receipts, changing when their record changes, never hosted or edited by the operator
- Operator pages that embed the Stub Mark automatically once the operator starts issuing receipts
- Mechanical and identical rules for all operators, with no human review of business practices, rewarding legibility over absence of incentives