> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coval.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Templates
> Save an evaluation configuration so you can re-launch or schedule it.
A **template** saves a full evaluation configuration — agents, personas, test sets, metrics, and run settings — so you can launch the same evaluation again without rebuilding it, or put it on a recurring [schedule](/concepts/runs/overview#scheduled-runs).
## What a template stores
| Saved | Notes |
| ---------------- | --------------------------------------------------------------------------------------- |
| **Agents** | One or more. Required. |
| **Personas** | One or more. Required. |
| **Test sets** | One or more, optionally narrowed to specific test cases. Required. |
| **Metrics** | The metrics to evaluate against. |
| **Mutations** | Any [agent mutations](/concepts/agents/mutations) to test alongside the base agent. |
| **Iterations** | How many times each test case runs. |
| **Concurrency** | How many simulations run in parallel. |
| **Sub-sampling** | If enabled, the sample size and a fixed seed, so each launch evaluates the same subset. |
A template needs at least one agent, one persona, and one test set.
## Creating a template
Templates are built from the **Launch** page, not a separate form — you set up a run as usual, then save it.
1. Go to the **Launch** page (on the **Templates** page, **Create Template** takes you here).
2. Select your agents, personas, and test sets, and choose iterations, concurrency, metrics, and any mutations.
3. Click **Launch ▾ → Save as Template**, give it a name, and save.
The new template opens on its own detail page, where you can edit it later.
## Launching from a template
On the **Launch** page, open the **Template** dropdown and pick a saved template. Its agents, personas, test sets, metrics, and run settings populate the form. Adjust anything you want for this run, then click **Launch**.
Changes you make on the Launch page apply to that run only — they are **not** saved back to the template. To change the template itself, edit it on its detail page.
## Editing and deleting
Open a template from the **Templates** list to edit it. You can rename it, change the description, and update any part of the configuration — agents, personas, test sets, metrics, mutations, iterations, concurrency, or sub-sampling — then **Save Changes**.
To delete a template, click **Delete** and confirm by typing its name. A template can't be deleted while an active scheduled run still points to it — disable that schedule first.
## Scheduling recurring runs
Any template can drive a recurring evaluation. From the **Launch** page, set up the run and choose **Launch ▾ → Schedule** to run it on an interval (e.g. every 6 hours) or at a set time of day. The schedule always points to a template, so updating the template changes what the schedule runs.
See [Scheduled Runs](/concepts/runs/overview#scheduled-runs) for the full scheduling options and how to manage them.