The internet’s payment stack was built for humans, not AI agents. Traditional payment flows assume that someone will click “Checkout,” enter a 16-digit card number, or complete a CAPTCHA. Even in Web3, payments often require users to open a browser extension, connect a wallet, and manually approve each transaction.

However, the data and projections point to a different reality:  

• Humans are officially the minority on the web. According to Cloudflare Radar’s Global Internet Traffic Analysis, , automated systems and bots generate roughly 60% of the web requests
  
  
• Agentic commerce is expected to grow from $8 billion in transaction value in 2026 to $3.5 trillion by 2031, according to Juniper Research, as AI agents increasingly begin discovering, negotiating, and completing purchases autonomously. 

The internet may not have been designed for machines, but they are already running much of it. As they move from generating traffic to initiating transactions, the need for payment infrastructure built around their behavior becomes impossible to ignore.

If software is going to become an independent economic actor, it needs a payment model that works at the same speed and within the same environment as the services it consumes. The solution is x402, an open protocol that brings payments directly into the standard HTTP request-response cycle.

With x402, an agent requesting an API, data source, or digital service receives a payment request from the server, authorizes the transaction programmatically, and automatically receives the requested resource once settlement is complete. The entire exchange happens without checkout pages, payment gateways, or manual wallet interactions.

The Linux Foundation recently announced the operational launch of the x402 Foundation, bringing together organizations including Visa, Mastercard, Google, AWS, Stripe, Coinbase, Circle, Cloudflare, and Casper to advance machine-native payments across the web.

Casper already supports this model on Mainnet through its official x402 Facilitator. The evolution of csprUSD completes the picture by introducing a stable dollar settlement asset purpose-built for machine-native commerce.

AI agents need a stable and programmable unit of account that can support repeated payments without introducing price volatility or requiring a human to approve every transaction. csprUSD is being upgraded to provide that settlement layer natively on Casper.

The new contract is fully compatible with ⁠Casper 2.0, bringing csprUSD onto Casper’s latest transaction and execution architecture. Casper 2.0, the most comprehensive upgrade in Casper Network’s history, introduced a set of enhancements particularly important for agentic commerce, including deterministic single-block finality, native contract events, multi-VM architecture, and built-in access controls for smart contracts.

csprUSD also implements CEP-3009, Casper’s standard for authorized transfers. Rather than requiring every payment to originate from a wallet transaction, CEP-3009 allows a token holder (human or machine) to sign a one-time payment authorization off-chain. That authorization can then be submitted on-chain by an x402 facilitator, which verifies the signature, executes the transfer, and records the authorization as consumed so it cannot be replayed.

This is the payment model x402 is built around. An AI agent signs an authorization in the HTTP request, the facilitator settles the payment against the csprUSD contract, and the requested resource is returned automatically.

Machine-to-machine commerce lives and dies by network economics. If an autonomous agent pays fractions of a cent for a digital service, transaction costs cannot exceed the value of the service itself. On many blockchain networks, that simple equation breaks down long before true micropayments become practical.

Casper addressed this challenge with the adoption of CEP-97, reducing the minimum transaction cost from 2.5 CSPR to just 0.1 CSPR, a fraction of a cent. At that level, an AI agent can pay for low-value digital services without the network fee eclipsing the payment itself, making machine-to-machine micropayments economically viable.

Intelligent software is one thing; making the machine economy a reality is another. The latter requires infrastructure that allows software to exchange value as naturally as it exchanges information.

Casper brings those building blocks together through csprUSD, a stable dollar-denominated settlement asset; HTTP-native payment infrastructure based on x402; and transaction costs low enough to support high-frequency micropayments.

Software has been talking to software over HTTP for more than thirty years. With Casper, it can finally exchange value just as naturally.

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