Choose by operating model, not just feature count.
Switch when you want 100% self-custodial multi-chain settlement across 12 networks (not just Solana/select EVM), 24 ready storefront plugins, and transparent 0.5% pricing.
Gateway comparison
XPayr vs Sphere (SpherePay)
A direct comparison for merchants evaluating crypto checkout, wallet settlement, stablecoin rails, fees, API/webhooks, testnet evaluation, and operational payment records.
Fee comparison needs context.
SpherePay focuses on Solana-centric payment orchestration and KYB-gated fiat/ach off-ramp rails with custom enterprise fee schedules.
XPayr charges a flat 0.5% gateway fee per successful transaction before network gas, swap, bridge, or third-party route costs.
SpherePay documentationWhere each platform fits
| Decision area | XPayr | Sphere (SpherePay) |
|---|---|---|
| Multi-chain breadth | 12 chains: Solana, Base, Arbitrum, Optimism, Polygon, TRON, BSC, TON, ETH, BTC, Arc. | Historically Solana-first with selective EVM/off-ramp expansion. |
| Self-serve onboarding | Instant Sandbox (/sandbox) & sk_test_ keys with zero sales calls. | Compliance/KYB gated for production payment & ramp features. |
| E-Commerce & CMS plugins | 24 turnkey plugins (WooCommerce, Magento 2, Shopware, Medusa, Bubble, Make). | API/SDK-first requiring custom engineering for legacy/PHP storefronts. |
| Exchange QR & AI tooling | Direct Exchange QR (1% tolerance), 21 MCP tools & HTTP 402 paywalls. | REST API, checkout SDKs, and fiat settlement workflows. |
| AI Agent & MCP Server Integration | Official 21-tool Model Context Protocol server (@xpayr/mcp-server on NPM & Official Anthropic MCP Registry io.github.xpayrcom/xpayr-mcp-server), OpenAPI 3.1.0 playground (api-docs.xpayr.com), and policy-controlled AI agent commerce. | Check official provider documentation for current AI agent or MCP protocol support. |
When XPayr is the cleaner choice
XPayr provides instant ungated Testnet sandbox keys, true 12-chain parity (Solana + Base + Arbitrum + Polygon + TRON TRC-20 + TON + BNB Chain + Bitcoin + Ethereum + Circle Arc), Direct Exchange QR tolerance, 24 turnkey CMS plugins, and a 21-tool MCP server at a flat 0.5%.
- Global SaaS, AI, hosting, and e-commerce merchants keeping stablecoin treasury in their own wallets.
- Stores needing TRON TRC-20 USDT, BNB Smart Chain, Base, Arbitrum, and TON alongside Solana.
- Teams running WooCommerce, MedusaJS, Next.js, FastAPI, WHMCS, Ghost, or Bubble.
When Sphere (SpherePay) may still win
SpherePay fits KYB-approved US/cross-border businesses specifically building around Sphere custodial fiat bank off-ramp APIs.
- Enterprises specifically contracting SpherePay for regulated custodial bank-wire off-ramps.
Questions before choosing
Is XPayr cheaper than Sphere (SpherePay)?
XPayr charges a flat 0.5% gateway fee per successful payment before chain gas or route costs. The right comparison depends on the competitor flow, conversion settings, network fees, settlement model, and merchant volume.
When should a merchant choose XPayr?
XPayr provides instant ungated Testnet sandbox keys, true 12-chain parity (Solana + Base + Arbitrum + Polygon + TRON TRC-20 + TON + BNB Chain + Bitcoin + Ethereum + Circle Arc), Direct Exchange QR tolerance, 24 turnkey CMS plugins, and a 21-tool MCP server at a flat 0.5%.
When might Sphere (SpherePay) still be better?
SpherePay fits KYB-approved US/cross-border businesses specifically building around Sphere custodial fiat bank off-ramp APIs.
Does XPayr support AI agents and the Model Context Protocol (MCP) compared with Sphere (SpherePay)?
Yes. XPayr provides an official 21-tool MCP server (@xpayr/mcp-server on NPM and io.github.xpayrcom/xpayr-mcp-server on the Official Anthropic MCP Registry) plus policy-controlled AI agent payment intents with human-in-the-loop approval guardrails.