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MCP Inspector
MCP Inspector is a developer tool for testing, debugging, and inspecting MCP servers through a web UI and proxy workflow.
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About
MCP Inspector is a developer tool for testing, debugging, and inspecting MCP servers through a web UI and proxy workflow.
Example tools
Illustrative tool names — the actual tool set is defined by the server at runtime.
list_resources
Enumerate resources exposed by this MCP
get_resource
Fetch a resource by ID
invoke
Invoke the primary action of this MCP
Screenshots
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Frequently Asked Questions
Common questions about MCP Inspector.
- What is the primary function of MCP Inspector?
- MCP Inspector serves as a developer tool designed for testing, debugging, and inspecting servers that utilize the Model Context Protocol (MCP). It provides a web user interface for streamlined analysis of MCP server interactions.
- How can I configure MCP Inspector with a client like Cline?
- MCP Inspector can be integrated by configuring the client to route MCP traffic through Inspector's proxy workflow. Specific setup steps depend on the client and Inspector's deployment method.
- Does MCP Inspector require an API key or other credentials for use?
- No, MCP Inspector does not require any API keys, OAuth, or other authentication credentials for its operation. It is designed for direct use without external authentication.
- What are the main capabilities MCP Inspector offers?
- MCP Inspector's key capabilities include a web UI for visualizing MCP traffic, debugging tools for analyzing server responses, and an inspection workflow to understand protocol interactions. These features aid in development and troubleshooting.
- Is there any cost associated with using MCP Inspector?
- MCP Inspector is open-source and available on GitHub, suggesting no direct licensing costs. However, operational costs may apply depending on how and where you choose to deploy and host the tool.
- What is a common limitation when using MCP Inspector?
- A common limitation is that its effectiveness relies on properly configuring clients or services to direct their MCP traffic through its proxy. Incorrect routing can prevent it from capturing and analyzing interactions.
Install MCP Inspector
Claude Desktop
Add this to claude_desktop_config.json.
{
"mcpServers": {
"mcp-inspector": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-mcp-inspector"
]
}
}
}Cursor
Add this to ~/.cursor/mcp.json.
{
"mcpServers": {
"mcp-inspector": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-mcp-inspector"
]
}
}
}VS Code
Add this to your workspace settings.json.
{
"mcp.servers": {
"mcp-inspector": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-mcp-inspector"
]
}
}
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