von modelcontextprotocol · modelcontextprotocol/inspector
The official debugger for MCP servers — connect to any server, call its tools live, see the raw protocol traffic.
MCP Inspector is the canonical dev tool for MCP. Point it at a server (local or remote), enumerate tools and resources, fire calls with structured inputs, and watch frames go by. First thing to reach for when your server misbehaves.
%APPDATA%\Claude\claude_desktop_config.json{
"mcpServers": {
"mcp-inspector": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/inspector"
]
}
}
}Öffne Claude Desktop → Settings → Developer → Edit Config. Nach dem Speichern neu starten.
{
"mcpServers": {
"mcp-inspector": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/inspector"
]
}
}
}Cursor nutzt das gleiche mcpServers-Schema wie Claude Desktop. Projektkonfiguration schlägt die globale.
{
"mcpServers": {
"mcp-inspector": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/inspector"
]
}
}
}Klicken Sie auf das MCP-Servers-Symbol in der Cline-Seitenleiste, dann "Edit Configuration".
{
"mcpServers": {
"mcp-inspector": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/inspector"
]
}
}
}Gleiche Struktur wie Claude Desktop. Windsurf neu starten zum Übernehmen.
{
"mcpServers": [
{
"name": "mcp-inspector",
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/inspector"
]
}
]
}Continue nutzt ein Array von Serverobjekten statt einer Map.
{
"context_servers": {
"mcp-inspector": {
"command": {
"path": "npx",
"args": [
"-y",
"@modelcontextprotocol/inspector"
]
}
}
}
}In context_servers hinzufügen. Zed lädt beim Speichern neu.
claude mcp add mcp-inspector -- npx -y @modelcontextprotocol/inspectorEinzeiler. Prüfen mit claude mcp list. Entfernen mit claude mcp remove.
Wann einsetzen: Claude says 'tool failed' and you need to see what really happened.
Ergebnis: Server bug isolated without LLM noise.
Build a FastMCP server; debug it with the Inspector before shipping
| Werkzeug | Eingaben | Wann aufrufen | Kosten |
|---|---|---|---|
| tools.call | (see docs) | Invoke any tool the server advertises | 1 call |
| resources.list | (see docs) | Browse resources | 1 call |
Run untrusted MCP servers against your auth tokensServer won't connectCheck transport (stdio vs SSE); confirm the binary path
| Alternative | Wann stattdessen | Kompromiss |
|---|---|---|
| mcp2cli | You prefer command-line | No GUI for protocol inspection |