Best Alternatives to Stablecoin Yield

Barker: real-time stablecoin yield index + AI advisor + non-custodial deposit/redeem (x402 paid).

Stripe AI

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MCP server integrating with Stripe - tools for customers, products, payments, and more.

WingmanProtocol Agent Gateway

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Async errands, artifact hosting, watches, memory + 15 calculators for AI agents. x402 on Base.

Brazilian Central Bank (BCB) MCP

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Verified

Queries BCB economic series, Focus expectations, and PTAX exchange rates through local or hosted MCP access.

Blackwall X402 Guardrail

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Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.

Agentrisk

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Pre-trade token risk scoring API for Base tokens, paid via x402.

XFuel

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Submit AI inference to XFuel, pay per task (USDC via x402 or TFUEL), fetch/verify ZK proofs.

OctoTrip Flights

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Free, no-login flight search with real-time pricing from multiple airlines.

Markifact: AI Performance Marketing

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AI marketing agent for Google Ads, Meta, GA4, TikTok, LinkedIn, Shopify, HubSpot and more.

Hera Agent Unity

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Control and verify a live Unity Editor through a local, low-token MCP server.

Pulsenetwork

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785+ paid intelligence endpoints in one MCP server — agents pay per query via x402 USDC on Base.

Httpayer MCP

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x402 micropayments for AI agents — credits-based, no wallets, no blockchain.