138 Million x402 Transactions: Where Cardano Stands

Chainalysis reported more than 138 million x402 transactions on Base in research published October 14. The findings arrive as Cardano’s official x402 integration gives applications and AI agents another route to purchasing digital services through web requests.

Base’s x402 Payments Show Changing Wallet Behavior

More than 87% of the payments analyzed by Chainalysis were between $0.0001 and $0.10. Its payment-size analysis covered 16 months ending in September 2026.

The share of newly funded wallets making their first x402 payment within an hour rose from 4% in the third quarter of 2025 to 67% in the same quarter of 2026.

Repeat funding also increased. Among wallets first funded in the third quarter of 2025, 70.6% received a second funding within 30 days. That figure reached 89.3% for the second-quarter 2026 cohort. This calculation included only wallets that sent payments on at least two separate days.

The protocol behind these payments uses an existing web response, HTTP 402 Payment Required, to communicate a service’s price and payment conditions. A client supplies payment authorization, which is verified and settled before the paid resource is returned.

That resource can be an API response, a dataset, a file, or another digital service. Software can purchase individual resources without a conventional checkout process or a separate subscription for every provider.

Because x402 also supports applications beyond AI agents, transaction totals are broader than a count of autonomous agents or completed commercial jobs. Payment values, recurring customers, and the services purchased provide additional measures of economic activity.

Cardano Connects x402, Masumi, and Agent Wallets

Cardano is already part of the official x402 SDK. The Cardano Foundation’s September activity report states that applications and AI agents can use the standard to pay for services in ADA or other Cardano native tokens.

Developers can integrate the published @x402/cardano package, which also powers the Foundation’s public demonstration application. The Cardano specification supports direct address payments, Masumi escrow, and payments to other supported smart contracts.

These options accommodate different services. A provider can charge directly for access to a resource or use a contract that holds funds under agreed conditions while a job is performed.

Masumi supplies payment and discovery infrastructure for AI agents on Cardano. Its registry lets applications find agent services, while its payment system connects a job request with escrowed funds and a recorded result.

In its documented workflow, the buyer locks funds in a smart contract. The provider delivers the work and submits a cryptographic hash of the result. Payment collection follows the contract’s timing and dispute rules, with refund procedures available when a buyer challenges the outcome.

The hash links the recorded result to the delivered content. Assessing whether that content satisfies the buyer’s requirements remains a separate step.

Public analytics already capture activity on Cardano’s main network. Agent Economy reported 39,722 transactions involving Masumi’s mainnet payment contract as of October 14, using data retrieved through Koios.

That measurement covers interactions across the escrow lifecycle, including different stages of a payment. It is therefore distinct from a count of completed customer orders and cannot be compared directly with individual x402 settlements on Base.

Wallet infrastructure addresses another part of the process. WingRiders, the team behind a decentralized exchange on Cardano, built the network’s integration into Open Wallet Standard. Available from release v1.4.3, it covers address handling, signing, and balance queries.

Developers can assign separate access credentials to agents and attach rules checked before signing. Built-in controls include permitted networks and access expiration. Spending caps and recipient restrictions require custom executable policies.

The integration gives developers tools to define which transactions an agent can authorize from designated wallets.

Micropayment Costs Shape Cardano’s Commercial Use

Very small payments raise a practical question for Cardano service providers: how much does collecting each payment cost?

Under the published Cardano x402 specification, the payer funds the network transaction fee. This version of the scheme does not include facilitator-sponsored fees.

Each transaction output must also contain a minimum amount of ADA determined by its size. When paying with a native token, that additional value accompanies the token to the recipient.

The minimum output value is separate from the network fee, but both affect what the payer must provide. A service’s advertised stablecoin price therefore does not describe the entire funding requirement for an individual transaction.

Masumi’s documentation directly addresses the economics of inexpensive services. It lists a network charge of 5% of the selling price alongside Cardano transaction costs. Locking funds, submitting a result hash, and collecting payment can each generate blockchain fees.

The documentation states that operating directly on Cardano’s base layer makes services with very small individual prices difficult to run profitably. It describes a planned second-layer solution as a future phase intended to reduce those costs.

Published implementations also have different testing scopes. The Foundation’s public x402 demo runs on Preprod. A separate Java facilitator documents an earlier Preprod demonstration but states that its current upgrade has not repeated that live test or been run on mainnet. Those limits concern that implementation and its tests; Masumi separately documents mainnet support.

Cardano’s available tools now cover web payment requests, conditional settlement, and controlled wallet signing. Each component addresses a different requirement for applications that purchase services autonomously.

The commercial comparison depends on what those applications deliver. A single escrow job can generate several blockchain transactions, while direct payment for an API response follows a shorter lifecycle. Connecting payment records to completed services, repeat customers, and revenue after settlement costs would make Cardano’s activity comparable with the market described on Base.