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x444 vs. Crypto Payment and Infra Projects

Project
Primary Focus
Gasless for payer
Walletless UX
Agent-native (x402)
Multi-chain
Typical Use Cases
How it charges

x444

Feeless rails and facilitator for x402 payments

Yes via wrapper + facilitator

Yes via HTTP requests

Yes first-class

BNB, Base, Solana roadmap

API pay-per-use, agent-to-agent, microtransactions

Protocol choice, designed for zero fee to user

Coinbase Commerce

Merchant crypto checkout and custody optional

No

No

No

Multi-chain via Coinbase stack

Web checkouts, donations, invoices

Processing fees and spreads may apply

Solana Pay

QR and URL based on-chain payments on Solana

No

No

No

Solana

Retail QR, e-commerce on Solana

Network fees only, no protocol fee

Biconomy (AA/Paymaster)

Gas sponsorship with Account Abstraction

Sometimes via paymaster

No (wallet required)

No

EVM

dApp UX, meta-tx, sponsored gas

Usage based infra fees

Gelato Relay

Relayed transactions and automation

Sometimes via relayer

No (wallet required)

No

EVM

Relays, automation, task execution

Usage based infra fees

Superfluid

Streaming payments for subscriptions

No

No

No

Multi-chain EVM

Salaries, subscriptions, streaming

Protocol fee on streams

Circle Payments & PW

USDC payments with programmable wallets

No by default

No (managed wallets available)

No

Multi-chain USDC

On- and off-ramps, enterprise flows

API and spread fees

BitPay

Merchant crypto acceptance with settlement

No

No

No

Multi-chain

Point of sale, e-commerce

Merchant processing fees

What makes x444 different

  • Feeless at the edge Users can pay with stablecoins without holding the chain’s native token. The facilitator and wrapper handle permit, authorization, and settlement.

  • HTTP-first and agent-ready Payments are triggered and verified through standard HTTP using the x402 pattern. This fits API monetization and machine-to-machine workflows.

  • No SDK lock-in Developers can hit a simple API to verify and settle payments. Standard HTTP requests become on-chain transactions.

  • Designed for micro and programmatic payments Optimized for pay-per-call, micro-services, and autonomous agents where fees and wallet UX break traditional flows.

Notes

  1. “Gasless” means the end user does not need native tokens. Some competitors can sponsor gas, but usually still require wallets or custom SDKs.

  2. “Walletless” refers to not requiring a user-managed wallet in the payment flow. Custodial or managed wallets count as wallet required.

  3. Details like fees and chain coverage can change. Always check each project’s latest docs.

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