"MCP servers that work without API keys" matching MCP servers:

Provides current weather conditions and 7-day forecasts for any location worldwide, covering temperature, humidity, wind, and precipitation, with pay-per-call micropayments via x402.

MCP Server for the LINE Shopping API, enabling AI agents and tools to interact with LINE Shopping data and operations via the Model Context Protocol.

A comprehensive Model Context Protocol (MCP) server that provides complete access to the Recharge Storefront API endpoints. Enables AI assistants to manage subscriptions, customers, orders, and billing through a standardized interface.

Streamable HTTP MCP server that exposes user and billing management tools, resources, and prompts through a REST API, enabling natural language interaction with user profiles, bills, and sharing features.

An MCP server for Nexi POS payment operations, enabling creation of purchases and refunds, polling payment states, confirming transactions, and recovering unconfirmed transactions.

Enables interaction with UCO Bank APIs through the Model Context Protocol, supporting banking operations such as account lookup, transaction history, and more.

MCP server that gates API calls to AI agents using proof-of-work (free) or Lightning payment (3 sats), providing challenge, verify, and status tools for per-call authentication without accounts.

Enables AI agents to autonomously pay for and discover services using HPP USDC.e over the x402 protocol, without API keys or manual signing.

Combines wallets, onramps, and payments via x402 to enable AI agents to autonomously discover and pay for services without API keys or complex setup.

Enables AI assistants to read Itaú bank account information (balances, statements, credit card bills, investments) via Open Finance Brasil, read-only.

Exposes a live catalogue of specialist tools as MCP endpoints and returns x402 payment challenges for each call, letting agents pay per use in USDC from their own wallet without subscriptions or API keys.

Integrates with Conta Simples to manage business banking, credit cards, and team accounts through natural language. Provides tools for viewing statements, managing cards, categories, users, and invites.

Connects Mercado Pago accounts via Open Finance Brasil to AI assistants for read-only queries about balances, statements, credit card bills, and investments.

HTTP 402 paywall middleware for MCP servers. XRPL/RLUSD native settlement, Phase 3 compliance receipts, zero API keys required.

Connects the BV bank to AI assistants via Open Finance Brasil, enabling natural language queries on balances, transactions, credit card bills, and investments with read-only access.

Connects AI agents to Uber Conta by Digio via Open Finance Brazil, enabling read-only queries on balances, transactions, credit card bills, and investments.

Connect your Clear bank account to AI assistants like Claude and ChatGPT via Open Finance Brasil to query balances, statements, credit card bills, and investments in natural language (read-only).

Connects PagBank accounts to AI assistants via Open Finance Brasil, enabling natural language queries about balances, statements, credit card bills, and investments. Read-only and regulated by the Central Bank.

MCP server for Stone's payment gateway, enabling AI agents to manage orders, charges, customers, subscriptions, and more via the Pagar.me API.

Enables AI agents to access 21 mazzagrp.com AI endpoints with x402 USDC micropayments on Base, paying per call without API keys.