> For the complete documentation index, see [llms.txt](https://docs.tessl.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tessl.io/projects/evals.md).

# Evals

Evals attach to a Tessl project.

A project context exists when the current directory, or a parent directory, is linked to a Tessl project.

This lets Tessl recognise the same repository across repeated runs.

### Why this matters

Without a Tessl project, an eval run is just a one-off local run.

With a Tessl project, Tessl has a stable identity for that repository, so source context and evaluation history stay connected.

This makes it easier to:

* Find old runs
* Compare runs over time
* Keep results attached to the right codebase

### What `tessl eval run` does

`tessl eval run` still runs from your local source.

When you run it in a directory, or subdirectory, where a project exists, the run is attached to that project so Tessl can keep its evaluation history together over time.

If the current repository is not linked yet, Tessl may ask you to create or link a project first.

### When continuity breaks

Continuity may be interrupted if the project link in `tessl.json` is missing, broken, or no longer correct.

When that happens:

* Inspect the link
* Repair it if needed
* Rerun once the directory is linked to the expected project

### See also

* [Overview](/projects/overview.md)
* [Manage projects from the CLI](/projects/manage-projects-from-the-cli.md)
* [Evaluate your codebase agent readiness](/improving-your-skills/evaluating-your-codebase.md)


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