UAC Registry Lookup

From version E1M0.3.0, UAC Launch Control includes a distributed lookup system — the UAC Registry — a community-sourced database of mod file metadata, hosted at https://db.uac-soft.online.

When enabled, the Registry acts as a two-way relay:

• Incoming: When you add a mod file to your catalog, the system queries the Registry by MD5 hash. If a match is found, metadata (name, version, source URL, load order dependencies) is auto-populated — saving you time and ensuring consistency.
• Outgoing: If a mod file has a URL provided (e.g. a ModDB, GitHub, or forum link) and the hash is not yet in the Registry (or the URL/version is new), the file’s metadata is anonymously submitted to a pending queue for review. Submission data is vetted before being merged into the active Registry, so spam URLs and malicious entries are filtered out.

Data transmitted

There is no personally identifiable information transmitted. Only the following data is sent:

Data	Example	Condition
MD5 Hash	a1b2c3d4e5f6...	Always
Suggested name	Project Brutality Phase 2	Always
URL	https://www.moddb.com/mods/...	Always (required for submission)
Version	2.0b	If provided
Sidecar flag	0 or 1	If set
Load order	[{"name":"..."},...]	If dependencies are configured

A submission is triggered when:

• The file’s hash is not found in the Registry, or the URL or version you’ve entered is new compared to what’s already registered
• AND you have provided a URL for the mod file

Enabling Registry Lookups

1. Open core_settings via the cog icon (or press Ctrl+.)
2. Go to the General tab
3. Toggle Registry Lookup to the ON position

A unique Registry UUID will be generated for your system on first enable. This is used solely for deduplication — ensuring the same user doesn’t submit the same mod entry multiple times.

Once enabled, the lookup runs automatically each time you add a file to the catalog via the Add to Catalog dialog. Files added on-the-fly from the Install form’s Configuration tab also trigger a lookup.

Privacy & Control

• Registry lookups are opt-in. The feature is disabled by default.
• You can disable it at any time. Disabling stops both outgoing submissions and incoming lookups.
• Existing catalog entries are unaffected.
• Submissions are only sent when you provide a URL — if you never fill in a URL field, no data is ever submitted.
• If you prefer to keep your mod catalog completely local, simply leave the feature disabled.

Technical

The Registry API lives at https://db.uac-soft.online. It exposes two endpoints:

• GET /mod/:hash — Look up a mod by its MD5 hash. Returns metadata if found.
• POST /mod/pending — Submit a mod to the pending review queue.

Lookups are performed asynchronously and do not block the catalog workflow — if the Registry is unreachable, the file is added locally without metadata, and no error is shown.

Submitted entries go through a review process before being approved into the active Registry. This ensures the database remains accurate and free of spam.