AI Agents spending money on their own is currently held back by two things.
One is identity. When an Agent calls an API, the provider sees only a string of requests; they don’t know who authorized them, what permissions the Agent has, or who to turn to if something goes wrong. For APIs involving payments or sensitive operations, providers either don’t dare enable them for Agents or require human approval every time—which puts a stop to autonomy.
The other issue is payments. Who pays the costs incurred when an Agent runs? How do you split the bill when it calls a dozen services? Who steps in when it exceeds the budget? Most developers currently link a credit card or give the Agent a wallet with a fixed limit. But linking a credit card directly is risky: if the Agent has a bug and maxes out the card, there’s no way to stop it. Wallets, on the other hand, are too blunt an instrument—they can’t enforce fine-grained controls by service type, individual call, or time window.
What Kite does is give Agents a passport they can use to spend money, tying identity and payments together. This is actually a smarter idea than building a standalone payment protocol: identity verification is already a prerequisite for payment, and separating the two just adds another layer of integration costs.
The Kite Agent Passport is essentially an on-chain identity credential that binds together three things: a USDC wallet address, a list of callable services, and a budget limit for each service. An Agent uses its passport to call integrated services; once the service verifies the signature, it charges the payment. Users can monitor bills in real time through a dashboard, and the system automatically cuts off any service that exceeds its limit. It sounds simple, but making it work requires thousands of service providers to adopt the same standard, while ensuring on-chain settlement is fast and cheap enough for frequent, low-value transactions. That’s a purely engineering challenge.
Kite chose Avalanche L1 as its underlying settlement chain. Sub-second finality and high throughput can support machine-level transaction frequency, while native stablecoin settlement avoids cross-chain conversions and brings transaction costs below those of traditional payment networks. Before mainnet launch, it ran 1.9 billion interactions on testnet. The mainnet officially launched in April 2026, and PayPal and Shopify are now integrating through pilot programs.
PayPal Ventures led Kite’s $18 million Series A, with General Catalyst participating, bringing total funding to $33 million. PayPal is integrating this payment capability into its commercial network. Shopify is testing whether merchants’ customer-service Agents can directly call platform services to process refunds and change orders, without waiting for human approval each time. These are among the first real-world enterprise use cases to hand payment authority to Agents.
On-chain data is still at an early stage, but the full transaction flow is working. On GitHub, you can find complete code showing developers using Kite Router to have local Agents pay to call APIs. The documentation lays out a three-layer architecture, and the Kite Chain block explorer lets you look up on-chain settlement records. The mainnet, passport system, SDK toolchain, and enterprise pilots are all up and running.
McKinsey estimates that by 2030, the volume of transactions intermediated by AI Agents will reach $3 trillion to $5 trillion, characterized by small amounts, high frequency, and automation. But what this market lacks right now isn’t Agent capability—it’s payment infrastructure. Traditional payment networks were designed for people: their fee structures, confirmation times, and KYC processes all operate at a human pace. Agents call APIs a dozen times a second, with each transaction worth just a few cents, and existing systems can’t handle it.
That’s why everyone is racing to capture this space. In March, Visa launched its Intelligent Commerce Connect platform to provide unified access to four major agentic payment protocols. In April, China UnionPay released its Agent Payment Open Protocol Framework and completed a production-grade test transaction. Paradigm and Stripe are also advancing the Machine Payments Protocol. In this race, Kite has taken a different path: traditional payment giants are modifying existing networks to support Agents, while Kite has built a new chain specifically for them. It launched early, its technology stack is open source, and it has the practical backing of PayPal and General Catalyst in payments and enterprise services to help drive adoption.
Whether the Agent economy takes off depends on whether developers and enterprises are willing to give Agents payment authority. Kite’s passport mechanism sets boundaries around budgets and permissions, making it possible to manage trust in tiers.
The pace of enterprise integrations and on-chain transaction data will show whether this approach can work. Kite has moved Agent payments from the conceptual stage to engineering implementation. Once this transaction flow is in place, use cases such as autonomous Agent transactions and Agents paying one another can become viable.
