MCP Inspector is Now Stable: A Browser-Based Tool for Testing MCP Servers
Source: Dev.to
MCP Inspector is a free, browser‑based tool that lets you connect to any MCP server URL and interact with its full capabilities—tools, resources, prompts, and tasks—directly from your browser.
Try it now:
What is MCP Inspector?
MCP Inspector provides a zero‑friction, browser‑only interface for testing MCP servers without installing anything locally.
Why We Built This
When building MCP integrations we were constantly switching between terminals, debugging configurations, and writing throwaway scripts just to test a single tool call. Existing local inspectors are great for development, but we needed a solution that works anywhere—testing remote servers, sharing debugging sessions with teammates, or quickly verifying a deployment.
Key Features
No Login Required
Open the URL, paste your server address, and start inspecting. No account creation, no signup flow, no barriers.
Privacy‑First Design
All requests go directly from your browser to the MCP server. We don’t proxy, log, or store any of your requests or responses. Your API keys and server interactions stay between you and your server.
Full Protocol Support
MCP Inspector supports the complete MCP specification:
- Tools – List available tools, configure parameters with a dynamic form, and execute them.
- Resources & Templates – Browse and read server resources.
- Prompts – Test prompt templates with arguments.
- Tasks – Create, monitor, cancel, and retrieve results from long‑running tasks.
- Progress Notifications – See real‑time progress updates during execution.
- Elicitations – Respond to server‑initiated form requests.
- OAuth 2.0 – Full OAuth flow support with dynamic client registration.
- Bearer Tokens & Custom Headers – Flexible authentication options.
Built‑in Demo Server
Not sure how it works? A test server is provided at https://mcp-test.glama.ai/mcp that demonstrates every feature—tasks, elicitations, progress notifications, audio responses, and images.
Shareable Sessions
Your entire configuration—servers, selected tools, and arguments—is stored in the URL. Bookmark it to save your setup, or share the link with a colleague to give them the exact same view.
How to Use It
- Go to .
- Click Add Server and enter your MCP server URL.
- Select your authentication method (None, OAuth, Bearer Token, or Custom Headers).
- Connect and start exploring.
The interface shows your server’s capabilities in tabs: Tools, Resources, Resource Templates, Prompts, and Tasks. Select any item to see its details, configure parameters, and execute requests. All requests and responses are logged in the panel below, and additional debugging info is available in your browser’s developer console.
For Local Development
MCP Inspector works great for testing remote servers. For local development with stdio transports or other local‑only features, we recommend the official MCP Inspector at .
Try It Today
We’ve been using MCP Inspector internally for months, and it’s become an essential part of our development workflow.
Open MCP Inspector →
Have feedback or feature requests? Join our Discord:
The MCP Inspector is part of Glama’s suite of tools for the Model Context Protocol ecosystem. Explore more at .