> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pxxl.app/llms.txt
> Use this file to discover all available pages before exploring further.

# MCP Monitoring

> Review MCP request activity without storing request or response bodies.

Open an MCP connection and select **Monitoring** to review how it is being used.

## Monitoring signals

| Signal | What it shows |
| - | - |
| **Request volume** | How many requests the connection sends over time. |
| **Success rate** | The share of requests that complete successfully. |
| **Latency** | How long Pxxl takes to authorize and serve requests. |
| **Popular methods** | The tools and methods the client uses most. |
| **Transfer usage** | The amount of data sent and returned. |

## Request history

**Request history** records method, tool, status, duration, and byte counts. It does not store request or response bodies. Use it to find blocked calls and slow operations without creating a second copy of resource data.

## Investigate a failed request

1. Check whether the response was `401` or `403`.
2. For `401`, confirm the key is current and the client sends it as an HTTP header.
3. For `403`, open [Permissions](/mcp/permissions) and check the scope and resource allowlist.
4. If the request succeeded but was slow, compare its method and resource with the latency view.

## Safe operations

Monitoring data is metadata about the connection. It is not a transcript of prompts, tool arguments, or returned records.


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