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

# Tools

> Latency, error rate and retries of every tool your scripts call.

The Tools view measures the tools behind your runs over a window: the last hour, 24 hours, 7 or 30 days, optionally for
one toolset.

![The Tools view: calls, failures, retries and latency percentiles per tool, grouped by server](https://mintcdn.com/rewind/WThuBH7lRjVmKt9-/images/dashboard/tools-light.webp?fit=max\&auto=format\&n=WThuBH7lRjVmKt9-\&q=85\&s=0f8525fbc960e09db01449654d34f0b9)

At the top: the calls completed, how many failed, the retries, and the slowest tool. Then each tool, grouped by MCP
server, group of host tools and built-ins:

| Column | What |
| - | - |
| **Calls**, **Failed**, **Error rate** | How many calls completed, and how many failed |
| **By kind** | The failures by kind: an error, a timeout, an unavailable server, an unknown outcome |
| **Retries** | Attempts beyond the first: calls sent again after a transient failure or a lost claim |
| **p50**, **p95**, **p99**, **max** | Latency, from the call to its result |

A slow or failing tool slows or fails every script that calls it: this is where to look when the Overview's
**Failing tools** lights up. The SDK reads the same figures with `rewind.tools.stats()`.

The Tools view is not available to a member limited to labels.


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