BlockBeats News, May 27th, OpenSea announced the launch of the Ethereum Open Standard ERC-8257 (Agent Tool Registry), positioning it as an "App Store for AI Agents," allowing developers to register tools on-chain, declare access rules and pricing, and support AI agents in autonomously discovering, purchasing access rights, and invoking tools without human intervention.

OpenSea stated that this standard, in conjunction with protocols such as ERC-8004 (Agent Identity), MCP (Tool Discovery), and x402 (Payment Protocol), forms the foundational infrastructure for AI agent on-chain operations. Currently, ERC-8257 is still in the draft stage, and OpenSea invites developers to participate in refining the specification.