Best Alternatives to Mainstreet

Pulsenetwork

Runtime: npx

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

LogicNodes — Agent Infrastructure

Runtime: npx

Agent payments, identity, and compliance for AI on Base. 9 tools via x402 USDC.

Stripe AI

Runtime: npx

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

WingmanProtocol Agent Gateway

Runtime: npx

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

XFuel

Runtime: npx

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

Httpayer MCP

Runtime: npx

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

PathCourse Health (PCH)

Runtime: uvx

Cheaper LLM inference, USDC agent payments via x402, agent identity / reputation lookup.

Lightning wallet for AI agents via Nostr Wallet Connect (NIP-47): budget caps, confirm, audit log.

MCP Server

Runtime: npx

Marketplace of paid HTTP APIs. USDC micropayments via x402 on Base. Non-custodial.

DeriveAI x402 APIs

Runtime: Remote (SSE)

25 pay-per-request intelligence APIs for AI agents via x402 micropayments (USDC/Base)

X402 API

Runtime: npx

DeFi data API for AI agents — pay-per-call via x402/USDC on Base

BridgeNode MCP

Runtime: npx

AI inference via MCP — pay per request with Solana USDC through x402. No API keys.