Electra Payment Index

How AI agents pay, compared

The protocols and providers that let an agent pay or get paid: what each one does, who supports it, and what it costs. Read on official pages and dated. Electra Index does not process payments.

Protocols 14 Providers & fees 24Compare routes · soonService prices (x402) · soon

Showing providers that supportMPPShow all

Provider	Type	Agent protocols supported	Public fees
StripeAgentic Commerce Suite / Machine payments (Shared Payment Tokens, Link Agent Wallet)	Payment processor	ACP MPP UCP x402	2.9% + $0.30 Online card (US, domestic) 1.5% International cards surcharge 1% Currency conversion 1.5% Stablecoin payments + 2 more on the pricing page Pricing page ↗ · read 02 Oct 2026
NeverminedNevermined x402 Facilitator	Agent payments	A2A MCP MPP x402	1% Merchant fee: stablecoin rails 2% Merchant fee: card rails 2% Buyer fee: external services $250 Premium plan Pricing page ↗ · read 02 Oct 2026
SpongeSponge Wallet / Sponge Gateway	Wallets	MCP MPP x402	No public fees found
VisaVisa Intelligent Commerce / Trusted Agent Protocol	Card network	MCP MPP Visa TAP	No public fees found Pricing page ↗
TempoMachine Payments Protocol (MPP) settlement	Blockchain	MPP	$0.0006 Network fee: transfer (base-fee cap) Pricing page ↗ · read 02 Oct 2026

Fees are the public list prices on each provider's own pricing page (mostly US rates); negotiated and regional rates differ. A protocol is listed only when the provider states support on its own page: click a protocol to open that page. No ranking, no "winner": partnerships never change what is shown.