MCP Inspector vs Windmill

Side-by-side comparison of two AI agent tools

Short answer

  • Pick MCP Inspector for: visual testing tool for MCP servers. Pick Windmill for: open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs.

From GitHub data refreshed daily.

Visual testing tool for MCP servers

Windmillopen-source

Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.

Metrics

MCP InspectorWindmill
Stars11.0k18.1k
Star velocity /mo282.06349206349205316.984126984127
Commits (90d)1.8k1.3k
Releases (6m)1010
Overall score0.81500761052104650.8135943658053529

Pros

  • +提供直观的可视化界面，无需复杂的命令行操作即可测试 MCP 服务器
  • +支持多种传输协议（stdio、SSE、streamable-http），兼容性强
  • +零配置快速启动，通过 npx 命令即可直接运行，开发体验极佳
  • +Multi-language support with automatic UI generation from scripts in Python, TypeScript, Go, Bash, SQL, and more
  • +High performance workflow engine claiming 13x faster execution than Airflow
  • +Self-hostable open-source solution with AGPLv3 license providing full control and customization

Cons

  • -需要 Node.js 22.7.5+ 环境，对运行环境有特定要求
  • -主要面向 MCP 服务器开发者，普通用户使用场景有限
  • -作为调试工具，不适合生产环境部署使用
  • -AGPLv3 license may restrict some commercial use cases and require careful compliance consideration
  • -Being a comprehensive platform may introduce complexity for simple automation tasks
  • -Self-hosting requires infrastructure management and maintenance overhead

Use Cases

  • •MCP 服务器开发过程中的功能验证和调试测试
  • •集成 MCP 服务器到应用前的接口兼容性检查
  • •MCP 协议实现的教学演示和原型验证
  • •Building internal APIs and webhooks from existing scripts without additional infrastructure
  • •Creating automated workflows for background jobs and data processing pipelines
  • •Developing low-code internal applications with custom UIs for non-technical team members
View MCP Inspector DetailsView Windmill Details

FAQ

Which is more popular, MCP Inspector or Windmill?
Windmill has more GitHub stars (18,087 vs 11,007).
Which is more actively developed, MCP Inspector or Windmill?
MCP Inspector had more commits in the last 90 days (1,750 vs 1,250).
Should I use MCP Inspector or Windmill?
Compare their capabilities, limitations and "best for" notes above. Trying each on a small task is the fastest way to decide.
MCP Inspector vs Windmill (2026): GitHub Stats, Features & Which to Choose