{"data":{"id":"38a1994d-8256-41c0-8d1a-6c56be048ebf","title":"AgentValve: Sybil-Resilient Payment Authorization for Permissionless AI Markets","summary":"AgentValve is a protocol for authorizing payments in permissionless AI markets, where adversaries can create cheap identities and fabricate feedback to inflate provider reputation. It models reputation as finite capacity in a directed graph, and a smart contract reserves capacity for each admitted payment so honest agents' exposure stays bounded. Experiments with up to 10,000 synthetic Sybil identities show bounded exposure and depletion, with the witness-commit mechanism cutting admission cost by up to 40.8% and common payments costing about $0.04 to $0.21.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2610.12948v1","publishedAt":"2026-10-09T03:45:31.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["other"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["AI agents","Ethereum"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-10-09T03:45:31.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["integrity","confidentiality"],"aiComponentTargeted":"agent","llmSpecific":false,"classifierConfidence":0.85,"researchCategory":"preprint","atlasIds":null}}