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inspector

Verified Safe

by mcp-use

Overview

Interactive developer tool for testing and debugging MCP (Model Context Protocol) servers, with support for MCP-UI and OpenAI Apps SDK widgets.

Installation

Run Command
npx @mcp-use/inspector

Environment Variables

  • MCP_USE_ANONYMIZED_TELEMETRY
  • POSTHOG_API_KEY
  • POSTHOG_HOST
  • SCARF_API_KEY
  • PORT
  • NODE_ENV

Security Notes

The project demonstrates good security practices for a developer tool. It handles LLM API keys and OAuth tokens, which are sensitive, primarily client-side via browser local storage, and can be proxied through the Inspector server. Telemetry collection is anonymized and opt-out via `MCP_USE_ANONYMIZED_TELEMETRY` environment variable or local storage settings. External requests are made for favicons and LLM APIs. The primary inherent risks stem from its core functionality: connecting to arbitrary, potentially untrusted MCP servers defined by the user, and facilitating interactions with external LLM services.

Similar Servers

Stats

Interest Score46
Security Score8
Cost ClassMedium
Avg Tokens500
Stars7
Forks1
Last Update2025-12-05

Tags

TestingDebuggingDeveloper ToolMCPUI