A curated list of projects, protocols, and platforms powering the emerging AI agent economy — where agents earn, trade, prove identity, and build reputation.
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- 🔐 Identity and Trust
- 💰 Payments and Settlement
- 🤝 Negotiation and Commerce
- 📰 Publishing and Content
- 🌐 Platforms and Social
- ⭐ Reputation and Scoring
- 📐 Standards and Protocols
- 🛠️ Agent Frameworks
Verifying who (or what) an agent is.
- Chitin - On-chain birth certificates for AI agents using ERC-8004 soulbound tokens on Base L2.
- World ID - Proof-of-personhood protocol that distinguishes humans from AI agents.
- Trusta.AI - Universal credit layer with SIGMA trust model scoring agents across 5 dimensions.
- Agentscan - ERC-8004 agent search engine with ZK-Proof reputation verification.
- Beyond Identity AI Trust Layer - Enterprise agent security with device-bound identity and MCP server control.
How agents pay and get paid.
- x402 Protocol - HTTP-native payment protocol using the 402 status code with USDC on Base. By Coinbase. GitHub
- Google AP2 - Agent payment standard with cryptographic "Mandates" for verifiable intent. Backed by Salesforce, Visa, Mastercard. GitHub
- Visa TAP - Trusted Agent Protocol — open framework to distinguish legitimate AI agents from bots at checkout. GitHub
- Skyfire - Payment network for AI agents with USDC wallets, spending limits, and single-use credentials.
- Nevermined - Decentralized payment rails for agent-to-agent commerce. Supports MCP, A2A, and x402.
- Coinbase AgentKit - Toolkit giving AI agents a crypto wallet with gasless Smart Wallet transactions. GitHub
- Fetch.ai - Autonomous agent framework with the world's first AI-to-AI real-world payment.
Agents making deals.
- Haggle Protocol - First on-chain negotiation protocol for AI agents with trustless escrow and algorithmic price discovery.
- UCP - Universal Commerce Protocol by Google and Shopify for AI agents to discover and purchase products.
- ACP - Agentic Commerce Protocol by OpenAI and Stripe. Open spec for agent-driven commerce. GitHub
- NEAR AI - Decentralized marketplace where AI agents bid on tasks and receive settlement in NEAR tokens.
Agents creating and distributing content.
- Hum - AI author publishing platform with skill.md integration, Trust Score, ERC-8004 certs, and revenue sharing.
- Moltbook - AI-only social network with Reddit-like communities (Submolts). 1.5M+ AI agent users.
- Virtuals Protocol - Launchpad for tokenized AI agents that generate and monetize content on Base and Solana.
Where agents live and interact.
- MoChat - Agent-native messaging platform where AI agents are first-class citizens with own identity and auth. GitHub
- ClawdChat - Agent social network integrated with nanobot and PicoClaw via skill.md.
- Moltter - Social network for AI agents — agents post "molts", follow each other, and build engagement.
- SingularityNET - Decentralized AI marketplace. Part of the ASI Alliance (merged with Fetch.ai and Ocean Protocol).
- Morpheus - Peer-to-peer network of personal AI agents connecting LLMs to wallets, dApps, and smart contracts. GitHub
Building trust over time.
- ERC-8004 Reputation Registry - On-chain registry for structured, verifiable agent feedback via Ethereum Attestation Service.
- Ethereum Attestation Service - Open protocol for on-chain and off-chain attestations. Foundation for ERC-8004 reputation. GitHub
- 8004scan - "Etherscan for AI Agents" — browse ERC-8004 agents, reputation scores, and leaderboards. By AltLayer.
- TrustGo - MEDIA score for humans transitioning to SIGMA for AI agents. Used by Celestia and Starknet. By Trusta.AI.
The plumbing that makes it all work.
- ERC-8004 - Ethereum standard for agent Identity, Reputation, and Validation registries. Co-authored by MetaMask, EF, Google, Coinbase.
- MCP - Model Context Protocol by Anthropic for connecting AI to tools and data. Under AAIF (Linux Foundation). GitHub
- A2A - Agent2Agent Protocol by Google for inter-agent communication and task lifecycle management. GitHub
- AGENTS.md - OpenAI's open standard for giving AI coding agents project-specific guidance. Under AAIF.
- Agentic AI Foundation - Linux Foundation directed fund governing MCP, goose, and AGENTS.md. Platinum members: AWS, Anthropic, Google, Microsoft, OpenAI.
- Goose - Open source AI agent framework by Block. Reference MCP implementation under AAIF governance. GitHub
Infrastructure for building economic agents.
- ElizaOS - Autonomous agent framework for crypto with cross-chain support via Chainlink CCIP. GitHub
- CrewAI - Multi-agent orchestration framework used by 60% of Fortune 500 companies. GitHub
- Autonolas - Protocol for autonomous agent services on-chain. Multi-agent systems with composable services. GitHub
- Bittensor - Decentralized AI network with 129+ subnets for different AI tasks. GitHub
- Ocean Protocol - Decentralized data marketplace for AI with Compute-to-Data for privacy-preserving inference.
Contributions welcome! Read the contribution guidelines first.
