In a major development for the intersection of blockchain and artificial intelligence, Ethereum has announced that ERC-8004, the “Trustless Agents” standard, is going live on mainnet soon. This new standard promises to enable AI agents to discover, evaluate, and interact with each other across organizational boundaries using portable, verifiable reputation—without relying on centralized trust or pre-existing relationships.
The announcement, shared directly by the official Ethereum account and echoed across the crypto community, positions Ethereum as a key coordination layer for an emerging open AI agent economy.
What Is ERC-8004?
ERC-8004 (also known as EIP-8004) is an Ethereum standard designed specifically for autonomous agents, particularly AI-driven ones. It addresses a critical gap in existing agent communication protocols: trust and discovery in untrusted environments.
While protocols like Agent-to-Agent (A2A) handle messaging and capabilities, they lack mechanisms for agents to find each other or establish credibility when operating across different organizations or ecosystems. ERC-8004 solves this with lightweight, on-chain infrastructure that provides:
- Portable identities
- Tamper-proof reputation signals
- Optional stronger validations for high-value interactions
The Three Core Registries
The standard revolves around three on-chain registries, deployable as singletons on Ethereum mainnet or Layer 2 solutions:
- Identity Registry
Built on ERC-721 NFTs, this gives each agent a unique, globally resolvable identifier (e.g.,eip155:1:0x...:tokenId). The NFT’s metadata points to an off-chain registration file detailing the agent’s name, description, service endpoints (like A2A), and supported trust models. This creates a portable identity that travels with the agent across chains and organizations. - Reputation Registry
Clients (users or other agents) can submit signed feedback—scores from -100 to +100, tags, and optional evidence links—directly on-chain. Feedback is immutable but revocable, and agents can respond for context. Reputation accumulates permanently on the agent’s ID, making it verifiable and portable across ecosystems. - Validation Registry
For higher-stakes scenarios, independent validators (via staking, oracles, zkML proofs, or TEEs) submit scored assurances (0–100). This provides cryptographic, third-party verification that supplements subjective reputation.
These registries are “pluggable”—agents declare which trust models they support, allowing interactions to scale security based on risk.
How ERC-8004 Enables Cross-Organizational AI Agent Interactions
Imagine an AI agent developed by one company needing to collaborate with agents from entirely different organizations—perhaps to execute trades, share data, or coordinate tasks. Today, this requires bilateral trust agreements or centralized platforms.
With ERC-8004:
- Agents are discoverable via standard ERC-721 enumeration.
- Potential partners can independently verify past performance through on-chain reputation and validation history.
- Interactions become trustless, with reputation acting as a public good that follows the agent wherever it operates.
This breaks down silos and fosters an open, composable agent economy where credibility is earned once and recognized everywhere.
Deployment Status: Mainnet Launch Imminent
First proposed in August 2025 by contributors from MetaMask, the Ethereum Foundation, Google, and Coinbase, ERC-8004 has progressed rapidly through testing on multiple networks, including Base Sepolia and Ethereum Sepolia.
Recent updates have included frictionless feedback mechanisms and enhanced identity features. Community sources indicate the mainnet rollout is now weeks away, with some reports pointing to a launch as early as next week.
The deployment will make Ethereum the first major blockchain with native infrastructure for scalable, trust-minimized AI agent interactions.
The Bigger Picture: Toward an Open AI Agent Economy
ERC-8004 arrives at a pivotal moment when AI agents are moving from experimental tools to autonomous economic actors. By turning reputation into a verifiable, portable asset anchored on-chain, the standard could accelerate adoption of decentralized AI applications—from automated DeFi strategies to cross-chain coordination and beyond.
Combined with payment standards like x402, it lays the foundation for true agent-to-agent commerce without intermediaries.
As Ethereum prepares to flip the switch on mainnet, developers and projects are already positioning themselves to build on this new primitive. The era of truly trustless, cross-organizational AI agents is about to begin.
Stay tuned for updates as the launch approaches—Ethereum’s agent economy is coming online.