OpenSea Releases ERC-8257, Positioned as 'App Store for AI Agent Tools'

Foresight News reports that OpenSea has announced the launch of the Ethereum open standard ERC-8257 (Agent Tool Registry), positioning it as an 'App Store for AI Agent Tools.' This standard allows developers to register tools on-chain, define access rules and pricing, and supports AI agents in autonomously discovering, purchasing access rights, and invoking tools without human intervention. OpenSea stated that this standard, combined with protocols such as ERC-8004 (Agent Identity), MCP (Tool Discovery), and x402 (Payment Protocol), forms the foundational infrastructure for AI agents to operate on-chain. Currently, ERC-8257 is still in the draft stage, and OpenSea invites developers to participate in refining the specification.