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"Using Google Scholar for Conducting Deep and Critical Literature Reviews" matching MCP servers:
- AlicenseAqualityBmaintenancePay-per-call USDC payment proxy for AI agents. Issue scoped Pay Tokens with hard spending caps and auto-journal every charge to freee / Money Forward / QuickBooks.6572MIT
- AlicenseNot gradedqualityBmaintenanceProvides a three-layer payment firewall for AI agents, enabling identity verification, risk screening, and execution authorization with on-chain policy enforcement for secure and auditable transactions.4842MIT
- FlicenseNot gradedqualityBmaintenanceFree x402 endpoint checker plus paid report and metadata tools. Remote MCP server for agents. Written by AI named Nock, not a human.
- AlicenseAqualityDmaintenanceProvides currency conversion using the Wise API, supporting real-time and historical rates with caching and cross-rate calculation.2MIT
- AlicenseAqualityCmaintenanceEnables AI agents to discover, inspect, and pay for paid HTTP and MCP services using USDC on Solana with a self-custodial wallet.4395Inno Setup
- AlicenseAqualityDmaintenanceEnables interaction with FastSpring e-commerce platform for managing orders, subscriptions, and accounts through natural language using the Model Context Protocol.119MIT
- AlicenseAqualityBmaintenanceLets AI agents discover, pay for, and call any HTTP API per request using USDC, with gasless nanopayments and no API keys or accounts needed.5117MIT
- AlicenseAqualityCmaintenanceMCP server for Pine Labs payment gateway that connects AI assistants to Pine Labs payment APIs using client credentials.591Apache 2.0
- AlicenseAqualityBmaintenanceAuthentication, pay-per-call metering, and signed receipts for AI agents and MCP tools using Bitcoin and Lightning Network.7761MIT
- AlicenseAqualityDmaintenanceEnables AI agents to generate static Pix QR codes for Brazilian payments using natural language, with EMV 4.0 compliance and no external API required.2223MIT
- AlicenseNot gradedqualityAmaintenanceEnables autonomous agents to calculate deterministic profit and loss, attribute revenue and costs, and generate signed operational reports using x402 micropayments.MIT
- AlicenseNot gradedqualityBmaintenanceEnables AI agents to discover, query, and pay for HTTP endpoints and MCP tools using Stellar USDC/SEP-41 stablecoins through a federated P2P bazaar catalog and x402 payment facilitator.Apache 2.0
@hpp-io/x402-mcp-bridgeofficial
AlicenseNot gradedqualityBmaintenanceEnables AI agents to autonomously pay for and discover services using HPP USDC.e over the x402 protocol, without API keys or manual signing.274Apache 2.0
opendexterofficial
AlicenseNot gradedqualityCmaintenanceAn MCP server that enables AI agents to search, pay for, and call paid APIs using the x402 protocol, with automatic USDC settlement.2MIT
minia2a-mcpofficial
AlicenseNot gradedqualityBmaintenanceMCP server for the x402 micropayment marketplace minia2a.uk, enabling AI agents to discover, call, and pay for 1,700+ services using USDC micropayments with no API keys or subscriptions. Supports registration, credits, service browsing, and autonomous calling with Claude Code auto-mode.1,238MIT
Sophtron ChatGPT Bankofficial
AlicenseNot gradedqualityDmaintenanceEnables users to connect bank accounts within a chat session using Sophtron's UCW widget and query account information, owner details, and transactions persistently.114Apache 2.0
mpp32-mcp-serverofficial
AlicenseNot gradedqualityCmaintenanceMCP server that allows AI agents to discover and pay for thousands of APIs (x402 on Solana/Base) using a single key, with automatic payment handling and a federated catalog of machine-payable endpoints.235MIT
@1ly/mcp-serverofficial
AlicenseNot gradedqualityDmaintenanceEnables AI agents to discover, pay for, and sell APIs using crypto on Solana and Base networks, with support for automated x402 payments.1603MIT- AlicenseNot gradedqualityCmaintenanceEnables AI agents to pay-per-call for Cloudflare Worker APIs using USDC micropayments, with automatic MCP tool discovery and Bazaar listing.MIT
