# Metrics - Workflow node | Docs - nodulz

Source: https://nodulz.com/docs/nodes/metrics

Language: en

Publish business measurements without changing workflow data.

## Usage and specifics

Declare metrics and map their values from run data. Check types and results in execution metrics before using them in a dashboard.

Technical type : `metrics`. Runtime : `nodulz`.

## Credentials and prerequisites

This node defines no dedicated external credential. Remote sources or execution targets may still need their own access credentials.

See the [credentials guide](/docs/credentials) if a remote source or execution target requires access.

## Parameters

Names below are technical keys. Defaults are not a ready-to-run configuration: complete fields required by your operation. Paths containing [] describe list items; some fields depend on the selected mode.

| Parameter | Type | Default | Values / limits |
| --- | --- | --- | --- |
| `declarations` | `array` | `[]` | -; max 20 |
| `declarations[].id` | `string` | - | -; min 1, max 100 |
| `declarations[].name` | `string` | - | - |
| `declarations[].description` | `string` | `""` | -; max 512 |
| `declarations[].unit` | `enum` | `""` | ``, `seconds`, `bytes`, `ratio` |
| `declarations[].type` | `enum` | `"gauge"` | `gauge`, `counter`, `histogram` |
| `declarations[].value` | `union` | `1` | - |
| `declarations[].labels` | `array` | `[]` | -; max 8 |
| `declarations[].labels[].name` | `string` | - | - |
| `declarations[].labels[].value` | `string` | - | -; max 1024 |
| `declarations[].buckets` | `array` | `[0.1,0.5,1,5,10,30,60]` | -; min 1, max 20 |
| `declarations[].when` | `enum` | `"success"` | `success`, `failed`, `always` |

## Initial configuration

Initial catalog configuration example, to adapt before running. Keep secrets in credentials.

```json
{
  "declarations": []
}
```

## Verification

Test with representative data. Check node output in the inspector and logs, then use editor mapping for downstream fields. A trigger test with a simulated payload does not validate external service delivery.

See also : [Expressions and data](/docs/expressions), [Executions](/docs/executions), [Node catalog](/docs/nodes).

## Explore further

- [Features - nodulz](https://nodulz.com/product/overview)
- [Node catalog - nodulz](https://nodulz.com/product/catalog)
- [MCP server - nodulz](https://nodulz.com/product/mcp)
- [Pricing - nodulz](https://nodulz.com/pricing)
- [Use cases and workflow automation - nodulz](https://nodulz.com/use-cases)
- [Choose what your workflows can do. - nodulz](https://nodulz.com/compare)
- [Documentation - nodulz](https://nodulz.com/docs)