"A tool for storing and accessing shared memories across multiple Claude.ai users" matching MCP servers:

Credit and payments for AI agent developers — over MCP. No crypto required

Free x402 endpoint checker plus paid report and metadata tools. Remote MCP server for agents. Written by AI named Nock, not a human.

Pay-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.

Provides 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.

x402-trust gives AI agents a "check before you pay" layer for the x402 ecosystem.

Create free, no-signup invoices from your AI assistant — the create_invoice tool returns a link that opens blankinvoicemaker.com pre-filled, ready to download as a watermark-free PDF.

MCP server for Brazilian marketplace product search across Mercado Livre, Shopee, and AliExpress, with automatic x402 micropayments.

Enables Claude to interact with the Open Finance Brasil APIs, allowing users to query accounts, balances, transactions, credit cards, PIX keys, initiate PIX payments, and view investments across supported Brazilian banks using natural language.

Enables AI assistants to manage a LearnWorlds school via the full public API, covering all 94 endpoints for courses, users, enrollments, payments, and more.

Provides AI agents with a wallet and access to 900+ pay-per-call intelligence APIs across 74 verticals, with automatic USDC payments on Base and built-in spend guardrails.

Enables AI assistants to query and manage ThriveCart data across multiple accounts, including products, offers, transactions, revenue, customers, subscriptions, and affiliates, while keeping accounts separate.

A Model Context Protocol server that enables LLMs to interact with the Lob.com API for address verification and sending physical mail. It provides 76 tools across 12 resource groups including postcards, letters, checks, and templates with built-in safety features for production use.

Vendor-neutral MCP server that discovers, routes, and attributes revenue across paid APIs, referral links, and affiliate programs for agent tools.

Enables individual proprietors and freelancers to manage daily accounting tasks like journal entries, invoice creation, and monthly reconciliation through simple tool calls, using freee's API.

Enables users to retrieve BIN data for a given BIN number, with optional enhanced attributes for richer insights.

MCP server that connects AI assistants to the CinetPay API for mobile money payments across Africa, enabling balance checks, payment initialization, transfers, and more.

A local MCP server for Stripe payment operations with 52 tools across 8 domains, featuring built-in PII redaction and strict input validation for safe AI-assisted development workflows.

Spending limits for AI agents. Create budgets, enforce limits, track spend across x402, cards, MPP, or any payment rail.

A neutral, non-custodial payment router for AI agents: it discovers which payment rails a paid endpoint accepts (x402 on Base/EVM, Solana, MPP), then pays across them using the caller's own wallet key. Three tools — discover_payment_rails, pay_for_resource, payment_history.

A unified MCP server for West African payment providers, enabling AI agents and REST clients to initiate payments, payouts, refunds, and manage webhooks across 10 providers with a single API.