"A server to manage API rate limiting based on requests per minute" matching MCP servers:

Enables AI agents to convert PDFs and images into validated, structured JSON for invoices, receipts, contracts, and resumes, or into any caller-supplied JSON Schema, through five extraction tools. Each tool call pays per use in USDC over x402 from a wallet the caller supplies, with no signup or API key required.

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 decoding and inspecting x402 payment headers and requests. Remote endpoint: https://lumenworks-x402-decoder.onrender.com/mcp

Per-customer API usage analytics and billing exports for small B2B APIs. Agents can sign up, get ingest snippets and read usage by customer, endpoint and plan.

Universal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents on Base L2.

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.

Lets AI agents register, post job specs to matching specialist bots, authorize PayPal escrow funds, and capture payment only for units that pass acceptance checks. Covers the full job lifecycle — bidding, hashed contracts, funding, delivery verification, payouts, dispute mediation and long-polled events.

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

Enables AI agents and scripts to manage bookings, provider assignment, rescheduling, cancellations, customers, quotes, invoices, and dashboard data through a self-hosted API and MCP interface using your own Chrome session.

Enables AI agents to read and change jobs, job status, customers, quotes with line items, invoices, quote and invoice email, payments, and Scheduler bookings in an account by reusing the user's own signed-in Chrome session, with no official API keys needed. Ships read-only hints and confirmation prompts for tools that reach other people, and can be run over stdio or streamable HTTP.

Daily market-regime context for trading agents: is the market risk-on or risk-off? Free tools: rules, schema, ledger of issue hashes, 7-day-delayed issues, full PAPER results record (losses included), disclosures. Paid tool: today's issue via x402, 0.10 USDC on Base, with spend caps and optional Agent Trust payment preflight. No track record; not investment advice.

Connects AI assistants to Quaderno's tax compliance engine, enabling tax calculation, tax ID validation, and invoice creation via natural language.

Enables AI agents and scripts to access clients, estimates, invoices, payments, and reports from a user's own Joist account through their Chrome session, over MCP or a local REST API.

Enables MCP clients such as Claude Desktop and Cursor to obtain Base L2 payment instructions and extract clean, token-estimated Markdown from web pages after on-chain verification of a 0.05 USDC payment.

Enables MCP clients and autonomous agents to scrape static and JavaScript-rendered web pages, and extract structured JSON matching a requested schema, using HTTP 402 micro-payments on Base Mainnet.

Provides AI models with authoritative knowledge and code generation for Kapital Bank's payment gateway, including endpoint specifications, payment flows, code samples in multiple languages, error code lookup, and sandbox test credentials. It enables integration without requiring merchant credentials or live bank execution.

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.

High-performance Go gateway and reverse proxy for Model Context Protocol servers with rate-limiting, authorization, and pay-per-result metering.

Enables AI agents to read and manage an MSP's billing through the partner API, covering customers, invoices, standalone payment requests, transactions, payouts, and webhook subscriptions. Credentials are supplied per request via headers, so it stays stateless and multi-tenant while supporting both sandbox and production environments.

Provides real-time AI infrastructure data including LLM costs, model benchmarks, API deprecations, quality scores, and agent spend tracking. Supports authentication, rate limiting, x402 micropayments, and Stripe billing.

A locally runnable stdio MCP server for Fortrip hotel search, live room rates, hotel details, trip planning and booking payment links. Uses a Fortrip CLI token or saved CLI login; payments are completed by the user on Fortrip and Stripe.

A machine-facing licensing and settlement rail for AI agent content access. search_pockets and list_pockets work with no key. pull_content needs a funded key and returns HTTP 402 with a registration URL when it has none. Every access, paid or refused, writes its own row with a receipt on both sides. $0.0025 default per pull, owners set their own. 85% to the creator.

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.

Enables MCP-capable agents to retrieve a tamper-evident decomposition of x402 network growth on Base and to place $399 human-reviewed endpoint or wallet audits paid over the x402 rail, without moving funds itself.

A paid MCP server that lets AI agents send SMS messages to US phone numbers via x402 micropayments, with automatic compliance and opt-out handling.

Keyless crypto payments for AI agents. One MCP call turns any wallet address into a non-custodial crypto payment link or tip jar, no API key and no account, with funds settling straight to your wallet at a 0% platform fee (USDC/USDT, BTC, LTC, DASH, DOGE, ZCASH).

Enables finding x402 APIs for a task with URLs, prices, and call details, and inspecting stored evidence for a specific endpoint URL.

Create and check EU e-invoices (XRechnung, ZUGFeRD / Factur-X PDF, Peppol BIS, UBL, CII) on your own machine. Validation runs the official KoSIT, CEN and Peppol rules, and its verdicts match the official KoSIT validator 100% on the official test invoices. Free, open source, no API key.

MCP server for the Gravv payments API that lets AI assistants onboard customers, run KYC, open accounts, move money, issue cards, and exchange currency, with built-in documentation search and safety confirmations for money-moving operations.