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

# Settings set

> Write an Instance setting.

Creates or updates a key on this Workflow Instance.

<h2 id="input">
  Input
</h2>

Inspector **Settings**. Empty-field rules for the Graph: [Previous nodes](/graph/previous-nodes). **Insert value** is on **Key** and **Value**.

On an Agent Tool, **Key** and **Value** can be **Agent decides** or **Fixed**.

Keys must start with a letter and use only letters, digits, `_`, `.`, `-` (max 128 characters).

| Field     | Required | Empty           | Notes                                        |
| --------- | -------- | --------------- | -------------------------------------------- |
| **Key**   | Yes      | Fail            |                                              |
| **Value** | Yes      | Previous Result | Graph only; an Agent Tool must pass a value. |

<h2 id="output">
  Output
</h2>

On the next node, **Previous nodes** lists **`Settings set`: Result** (`{{Settings set.text}}` while the name is unique).

| Output | In menu | Type | Next node gets                                   |
| ------ | ------- | ---- | ------------------------------------------------ |
| Result | Yes     | Text | A status line such as `Set "auto_check" = true`. |