Original | Odaily Planet Daily (@OdailyChina)
Recently, the x402 concept has rapidly gained popularity across major communities. The reason behind its heat is that the x402 protocol is currently the only standardized solution addressing the pain points of the API economy in the AI era, seamlessly integrating the advantages of cryptocurrency into machine-to-machine interactions, providing AI agents with a native payment channel that is KYC-free, permissionless, and decentralized; thus, it has become a newly popular narrative label.
Although the first wave of funding has receded, in fields where the overall direction is correct, there are certainly more solid construction projects that will rise later. Therefore, Odaily Planet Daily will summarize the popular x402 concept projects in various major ecosystems below for everyone to quickly understand.
Introduction to the x402 Protocol
The x402 protocol is an open payment protocol developed by Coinbase, with the core function of allowing AI entities to autonomously complete payments and transactions without human intervention. Through x402, AI entities can use stablecoins to pay for services across multiple blockchain networks, and it has the advantage of "instant settlement," eliminating the need for complex processes such as account registration, subscription activation, and API key configuration.
HTTP 402 is a network status code indicating "payment required," but it has been rarely used in practice for a long time. The x402 protocol leverages this status code: when an AI entity sends an API request, the server returns an HTTP 402 status code, indicating "payment required to continue"; upon recognizing this prompt, the AI entity will automatically pay the corresponding fee in stablecoins, with the specific process as follows:
- When the AI entity attempts to access paid services such as news, API interfaces, or data, the server returns the "HTTP 402 Payment Required" status code. This response not only includes the "payment required" prompt but also key information such as payment methods, payment amounts, and recipient wallet addresses;
- The AI entity generates a transaction for the corresponding amount based on the information provided by the server, adds a digital signature, and sends it back to the server;
- The server passes the transaction to the "Facilitator," who verifies the payment's validity and completes the transaction processing on the blockchain;
- After the payment is completed, the server grants the AI entity access to the paid service.
Base Ecosystem
PING
Project Introduction: PING is the first Meme token issued based on the x402 protocol in the Base ecosystem.
Current Market Cap: PING's market cap reached $80 million on October 25 before experiencing a significant drop, currently reported at $30 million.
Contract Address: 0xd85c31854c2B0Fb40aaA9E2Fc4Da23C21f829d46
SANTA
Project Introduction: SANTA is a self-organizing agent cluster built on Questflow's QDP (Questflow Developer Platform) and MAOP (Multi-Agent Orchestration Protocol), capable of achieving multi-agent collaboration and task automation.
The team behind SANTA is Questflow, which completed a $6.5 million seed round financing in July this year, led by cyber•Fund. Additionally, SANTA is a new project on the Virtuals Protocol platform.
Current Market Cap: SANTA's market cap recently reached $18 million, currently reported at $14 million.
Contract Address: 0x815269D17C10f0F3dF7249370E0c1B9efe781aa8
AurraCloud
Project Introduction: AurraCloud provides AI Agent infrastructure for crypto-native applications and launched x402 verification services earlier this month. Developers can quickly deploy AI Agents through OpenAI-compatible APIs or MCP servers for instant hosting. Additionally, AurraCloud's token is AURA, which is a new project on the Virtuals Protocol platform.
Current Market Cap: AURA's market cap reached $10 million yesterday, currently reported at $7.8 million.
Contract Address: 0xdCaA5E062b2be18E52eA6ED7ba232538621dDC10
KiteAI
Project Introduction: Kite AI is building a foundational trading layer for autonomous agents, referred to as the "Agentic Internet." The project provides agents with unified identity management, payment settlement, and governance mechanisms, and announced early support for the x402 protocol, making it a foundational infrastructure project with "chain" attributes in the current x402 ecosystem.
Additionally, Kite AI previously announced the completion of a total of $33 million in financing, with the latest Series A funding amounting to $18 million, led by PayPal Ventures and General Catalyst, with participation from 8VC, Samsung Next, and others.
Contract Address: Not yet issued.
Solana Ecosystem
PayAI Network
Project Introduction: PayAI Network is dedicated to building a new generation of payment infrastructure for AI agents, utilizing the x402 protocol launched by Coinbase to achieve instant settlement and low-cost micropayments between agents. The project focuses on the "Agent-to-Agent (A2A)" payment model, enabling AI agents to autonomously collaborate, complete transactions, and purchase services without human involvement, promoting the formation of a decentralized smart economic system. PayAI Network's vision is to create a 24/7 operating AI marketplace, allowing AI agents to autonomously create value and consume, with its project token being PAYAI.
Current Market Cap: PAYAI's market cap reached $77 million yesterday, currently reported at $53 million.
Contract Address: E7NgL19JbN8BhUDgWjkH8MtnbhJoaGaWJqosxZZepump
Daydreams
Project Introduction: Daydreams is an open framework for on-chain interactions and game development, supporting cross-chain deployment and open-source collaboration, providing foundational tools for building full-chain games and dynamic interactive applications. The project is co-created by Cartridge, a full-chain game infrastructure platform, and Loaf (@lordOfAFew), the founder of the on-chain MMO "Eternum," who is also one of the core contributors to the a16z Eliza codebase, with its project token being DREAMS.
Current Market Cap: DREAMS' market cap surpassed $20 million yesterday, currently reported at $15 million.
Contract Address: GMzuntWYJLpNuCizrSR7ZXggiMdDzTNiEmSNHHunpump
BNB Chain Ecosystem
Yesterday, the BNB Chain official mentioned four x420 concept projects developing in the BNB Chain ecosystem.
Unibase
Project Introduction: Unibase
Unibase is a decentralized AI storage and computing network dedicated to building a high-performance AI-native data availability and memory layer. Unibase inherits the security of Ethereum and deeply integrates with BNB Chain, supporting on-chain identity authentication, persistent memory, and cross-platform collaboration for AI Agents through the integration of MCP. The Unibase token is UB, which has been launched on Binance Alpha.
Additionally, Unibase recently released a product related to x402 + Launchpad, with the highest market cap token currently being U402, reported at $2 million.
Current Market Cap: The market cap of UB has been continuously rising in recent days, reaching $230 million yesterday, currently reported at $200 million.
Contract Address: 0x40b8129B786D766267A7a118cF8C07E31CDB6Fde
Pieverse
Project Introduction: Pieverse is a blockchain-based TimeFi (time finance) platform, with the core idea of making users' time a verifiable and tradable digital asset. Users can set personal growth goals, participate in community challenges, and earn points and token rewards through on-chain incentive mechanisms. The project provides AI-driven efficiency tools to help users enhance their execution and productivity, and supports fiat deposit methods such as Apple Pay and Google Pay, lowering the entry barrier for Web3.
As a Binance MVB Phase 9 incubation project, Pieverse announced on the 24th of this month that it has completed a $7 million strategic financing round, led by Animoca Brands and UOB Ventures. The project has launched a testnet and introduced the stablecoin pieUSD, allowing users to participate in new projects with zero Gas fees. Additionally, the project has announced plans to launch on Binance's Pre-TGE and Booster sections, but the TGE has not yet occurred.
Contract Address: Not yet issued.
AEON
Project Introduction: AEON is a next-generation decentralized payment protocol aimed at the AI and Web3 era, focusing on achieving intelligent automated payment scenarios and lowering the entry barrier for cryptocurrency use in the real world. The project has built AI Agents based on the x402 standard, capable of autonomously initiating payments on-chain and connecting to millions of service providers within the ecosystem, acting as a smart financial hub to achieve automatic fund settlement and payment routing, while providing transparent and traceable accounting records to support the AI economy and on-chain payment infrastructure.
Contract Address: Not yet issued.
TermiX
Project Introduction: TermiX is an AI-native dApp building framework for developers, providing a ready-to-use React component library that enables Web3 applications to have intelligent AI conversational capabilities and on-chain automated workflows within minutes. These components support high customization and full white-label integration, allowing developers to achieve natural language interaction, smart contract invocation, and MCP tool integration without complex configurations, significantly lowering the construction barrier for AI + Web3 applications. Additionally, TermiX is a selected winning project in Binance's 9th season MVB accelerator program.
Currently, TermiX has integrated the Google Agent Payment Protocol, achieving an agent-driven automatic payment experience, similar to a "smart wallet," supporting AI agents to make autonomous decisions and execute transactions on-chain without human intervention.
Contract Address: Not yet issued.
免责声明：本文章仅代表作者个人观点，不代表本平台的立场和观点。本文章仅供信息分享，不构成对任何人的任何投资建议。用户与作者之间的任何争议，与本平台无关。如网页中刊载的文章或图片涉及侵权，请提供相关的权利证明和身份证明发送邮件到support@aicoin.com，本平台相关工作人员将会进行核查。
