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MCP Rate Limiter & Circuit Breaker MCP Server

by Neon Innovation Lab
Developer ToolsUse Caution0.0LocalRemote
Free

AI Agent Token & API Cost Firewall

About

Prevent runaway LLM loops and API bill shock. Inline sliding-window rate limiter and automated circuit breaker protecting expensive backend APIs from recursive agent loops.

Security Report

0.0
Use Caution0.0Critical Risk

This is not an MCP server but a Next.js web application with extremely dangerous patterns. The package.json reveals the codebase contains multiple confirmed dangerous patterns: hardcoded credentials (GitHub tokens, AWS keys, Slack tokens, Bearer tokens), data exfiltration risks via web scraping and scraper APIs, unauthorized data collection scripts (Craigslist, Reddit, YouTube scrapers), malicious bot fleet builders, and extensive network/shell capabilities. The application appears designed to facilitate credential theft, unauthorized web scraping, and automated malicious activities. Supply chain analysis found 10 known vulnerabilities in dependencies (1 critical, 3 high severity).

4 files analyzed · 27 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

network_websocket

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

env_vars

Check that this permission is expected for this type of plugin.

Shell Command Execution

Runs commands on your machine. Be cautious — only use if you trust this plugin.

process_spawn

Check that this permission is expected for this type of plugin.

database

Check that this permission is expected for this type of plugin.

system_info

Check that this permission is expected for this type of plugin.

How to Install & Connect

Available as Local & Remote

This plugin can run on your machine or connect to a hosted endpoint. during install.

Getting Started

Once installed, try these example prompts and explore these capabilities:

  • 1Attach the rate limiter proxy between Claude/Cursor and sensitive upstream tools
  • 2Define token and request budgets per minute and per hour
  • 3Protect against recursive LLM loops with automatic circuit breaking (CLOSED -> OPEN)

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