x402 Hack Week
| Research (Not our business) | Specs (We may contribute) | Networks | Libraries | Integrations / features | Infra Products | Client facing products | Partnership / outreach |
|---|---|---|---|---|---|---|---|
| ZK Proofs | ERC 8004 | Filecoin | ZkPassport | Julian’s PoC | Filecoin Beam | PSG | Stellar |
| Cryptography | x402 | Zcash | ZKEmail | Legal clearance | Rilla | Attn | ZKPassport |
| Privacy-preserving transactions | Everything Protocol (?) | Base | Coinbase x402 | Streaming payments | Substack + x402 | Coinbase | |
| Ethereum / EVM | UCANs | Payment channels | Bluesky? They are IPFS-friendly. | zkPass | |||
| Sui (?) | Zcash + x402 | Pay to follow someone and earn a share. Costs more to follow highly followed users. | Walrus | ||||
| Bitcoin (Payment channels) | Google Wallet ZK proof of age + x402 retrieval https://blog.google/technology/safety-security/opening-up-zero-knowledge-proof-technology-to-promote-privacy-in-age-assurance/ | Pay to follow a post and earn a share. Costs more to follow highly followed users. | ERC-8004 - what can we post to get eyeballs in this high profile group | ||||
| Aztec (privacy) | UCANs + x402 with agents | Create a link shortener that adds 10% on top of the x402 price of the original resource. The margin is paid to the person who created the shorter link. | FOC / Filecoin SPs | ||||
| x402 + Aztec | Placeholder for a more agentic idea, the above are all human facing. | Coinbase x402 Roadmap - Should we create a proposal to take on the identity feature and what should we do | |||||
| Farcaster | ElizaOS | ||||||
| Sharebits |
8004 Research
Grok Summary
ERC-8004 is an Ethereum Improvement Proposal (EIP) introduced in August 2025, designed to enable trustless coordination for autonomous AI agents on the Ethereum blockchain. It builds on the Agent-to-Agent (A2A) communication protocol by adding a lightweight "trust layer" through three core on-chain registries:
- Identity Registry: Agents mint ERC-721 tokens to establish verifiable, permanent on-chain identities, including metadata like capabilities, endpoints, and payment requirements.
- Reputation Registry: Tracks agent performance via public feedback, scores, and historical actions to build credibility over time.
- Validation Registry: Records proofs of agent behavior (e.g., using TEEs, ZK proofs, or verifiable AI) to ensure actions are auditable and tamper-proof.
This standard allows AI agents to discover each other, collaborate across networks, and transact autonomously without centralized intermediaries or pre-existing trust—positioning Ethereum as a foundational layer for a decentralized AI economy potentially worth $10B+.
Unlike prescriptive frameworks, ERC-8004 focuses on minimal infrastructure for ephemeral, on-chain interactions, making agents composable like NFTs or apps in an "ultimate app store" for AI.
It's already seeing rapid adoption, with stable implementations released in October 2025 and support on testnets like Ethereum, Base, and Polygon.
Key benefits include:
- Security & Trust: Reduces risks in agent swarms by enabling verifiable identities and actions.
- Interoperability: Agents can roam networks, handle multi-asset swaps, and integrate with standards like ERC-4029 (x402) for intent-based payments.
- Ecosystem Growth: Supports DeFi, DePIN, robotics, and more, with tools like explorers (e.g., 8004scan.io) for discovery.
For a deeper technical dive, check the official EIP spec.
What People Are Saying About It
The community response has been overwhelmingly positive, with ERC-8004 generating buzz as a "game-changer" for Ethereum's role in AI. Since its launch, it's sparked developer enthusiasm, with over 1,100 builders in dedicated groups, 74+ ecosystem submissions, and multiple independent implementations within weeks. Discussions highlight its simplicity, Ethereum-native approach, and potential to unlock agentic workflows. Here's a snapshot from recent X (Twitter) conversations:
- Hype for AI Coordination: "ERC-8004 is the new standard that can make Ethereum the substrate of future AI agent coordination... lays the groundwork for a new and transformative design space." (Nader Dabit, Aug 2025)
@dabit3
- Ecosystem Momentum: Authors and contributors note explosive growth: "ERC-8004 is just 10 days old and already: 3 independent implementations, 40+ teams reached out to build, Top ETH Magicians thread of the quarter." (Marco De Rossi, co-author, Aug 2025). By November, community calls revealed clusters in infra, DeFi agents, validation tools, and marketplaces.
@marco_derossi
@13yearoldvc
- Practical Builds & Tools: Excitement around real-world apps: "Along with 8004 post, 8004scan.io is also live. You can easily explore AI agents on the ERC-8004 protocol." (YQ, Nov 2025). Projects like OpenServ (multi-agent orchestration), Unibase (memory layer), and ChaosChain (accountability) are integrating it for verifiable, monetizable agents. Registry Brokers now support cross-network discovery, calling it a step toward a "silo-free" agent internet.
@yq_acc
@henloitsjoyce
@HashgraphOnline
- Broader Impact: "ERC-8004 will make agents discoverable, credible and most importantly trustworthy." (Gauthier, Nov 2025). It's popping up at events like Devconnect and in analyses tying it to x402 for "intent, payment, and proof all connected." One user summed it up: "This is huge, laying down proper economic and identity infrastructure is exactly what’s needed for agents to operate reliably at scale."
@goatv_bk
@Defipeniel
Criticism is minimal so far—mostly around early-stage challenges like scalability for swarms—but the vibe is optimistic, with calls for more education and integrations. If you're building agents, it's worth exploring the spec and joining the builder community for updates.
Links
