---
url: /relyagent-whmcs/features/file-integrity.md
description: >-
  Relyagent checks its deployed files against a signed baseline to catch
  tampering or mismatches, and Auto-Sync can repair them for you — so you always
  know the module on disk is the module you installed.
---

# File integrity & sync

Relyagent watches its own files so you can trust that what's running is exactly what you
installed. This matters because Relyagent is the bridge between your WHMCS and outside AI clients —
you want to be certain nothing has been altered underneath it.

## What integrity checking does for you

Relyagent keeps a **signed baseline** of its deployed files. Whenever you open the module, it
compares the files on disk against that baseline and flags anything that has been **tampered with
or is missing**. You'll see this on the **Settings → Sync** tab as either an
**Everything In Sync** banner (with the reassurance *"All deployed files match the HMAC-signed
baseline."*) or a **Sync Required** banner when something doesn't match.

In short: if a file was changed by a bad upload, a partial update, or anything else, you find out
right away instead of chasing mysterious behaviour later.

## Auto-Sync and running a sync

* **Auto-Sync** — a toggle that, when on, re-deploys the correct files automatically on admin
  page load whenever a mismatch is detected. This is the hands-off option: small drifts get
  repaired for you.
* **Run sync manually** — the Sync control on **Settings → Sync** re-deploys the files on demand.
  On success you'll see *"Sync completed successfully."*
* **Sync status** — the banner tells you at a glance whether everything matches the baseline or a
  sync is needed.

## When a sync is needed

You'll typically want to run a sync (or rely on Auto-Sync) after:

* a **manual update**, where you replaced the module files yourself and want the deployed hook
  files brought back in line, or
* any time the **Sync Required** banner appears, meaning a deployed file no longer matches the
  signed baseline.

::: tip
If you prefer not to think about this, turn on **Auto-Sync** and let Relyagent keep its files in
line for you. Either way, the Sync tab always shows you the current status.
:::

For the broader picture of how Relyagent protects your install, see
[Security](/relyagent-whmcs/features/security).