ERC-8004: The Missing Trust Layer for Autonomous Agents on Ethereum

Autonomous agents are already capable of executing trades, calling APIs, and coordinating workflows. What they cannot do reliably is trust each other. This is not a minor limitation. It is the core bottleneck preventing agent economies from scaling. ERC-8004 introduces a structured way to solve this problem by making identity, reputation, and validation first-class primitives on-chain. Without trust, agents remain tools. With trust, they become economic actors. The Problem: Agents Without Trust Before ERC-8004, several protocols already existed to enable agent functionality: Model Context Protocol (MCP) for exposing capabilities Agent-to-Agent (A2A) protocols for communication Smart contracts for execution and payments These systems enabled interaction, but they did not solve trust. Consider a simple scenario. An agent discovers another agent that claims: “I can manage your trading strategy and generate yield.” Now the questions become unavoidable: Who owns this agent Has it worked rel