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

Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.

Proves AI-generated Python does what you asked: lint, types, security, sandbox run, exact fixes.

Pay-per-call MCP tools via x402 USDC: ZAR prices, data extraction, Python sandbox, SA flights.

Engineering calculation MCP server for oil and gas engineering applications.

AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.

MCP server for Klever blockchain smart contract development.

Docs for hot-module-reload and reactive programming for Python (`hmr` on PyPI)

40+ developer tools from Context7, Code Runner, Python Execute, NPM Sentinel, PlantUML, and Microsoft Learn. Docs lookup, code execution, security scanning. Starts at $0.01/call. Get your API key at app.xpay.sh or xpay.tools

AI-agent verifier: verdict committed before the outcome graded against it; /review, /ledger.

Automate cloud Chrome—navigate, click, type, screenshot, run code, record screen video

Generate a Flutter app from a JSON spec free; pay only for the compiled APK (USDC on Base).

Provides access to TakeProfit.com's Indie documentation and tooling — a Python-based scripting language for building custom cloud indicators and trading strategies on the TakeProfit platform.

Anima MCP connects your AI coding assistant directly to Anima Playground. It bridges the gap between PM prototypes and production code.

Build Apps and run code in 30 languages — sandboxed, with persistent sessions for agent loops.

Personal assistant MCP server with search, execute, packages, jobs, secrets, and integrations.

Run, build, and validate firmware on virtual hardware from your AI agent. Hardware knowledge corpus.

Pay-per-call DNS/TLS truth and npm/PyPI breakage checks via x402. No account or API key.

Build a full backend from Claude Code — boards, data, REST APIs — plus a ready-made admin UI

MCP server for Superserve sandboxes: create, exec, and manage Firecracker microVMs

Confidential AI execution with a post-quantum receipt on every job — verifiable by anyone.