arXiv:2610.12948v1 Announce Type: new Abstract: AI agents increasingly select and pay service providers without human review. In emerging permissionless markets, however, adversaries can create inexpensive identities and fabricate feedback to inflate provider reputation, making reputation-based payment authorization vulnerable to Sybil attacks and exposing clients to unbounded financial loss.
AgentValve: Sybil-Resilient Payment Authorization for Permissionless AI Markets
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