Sterilization Fixer — Telemetry Privacy

This document describes what Sterilization Fixer's anonymous telemetry contains and how to disable it. Telemetry exists for one reason: to detect world-repair bugs and mod-compatibility failures on real servers so they can be fixed before they cause world damage.

Telemetry is never required for cleanup. If it is disabled, misconfigured, or the endpoint is offline, world repair continues normally.

Reliability

Telemetry is the lowest priority in the mod and can never compromise anything above it:

WORLD REPAIR  >  SERVER STABILITY  >  LOCAL LOGGING  >  TELEMETRY

Recording a report never blocks the server, and every telemetry entry point is isolated so a fault in it can never propagate into cleanup.

What is collected

Reports are built only from a fixed, explicitly allowed set of values. Nothing outside that set is ever sent.

With every report

• A random installation id (see below)
• The mod version, Minecraft version, mod loader and its version
• The major Java version
• When the event happened

Cleanup summaries

Aggregated counts of what a cleanup pass repaired or removed — chunks and entity chunks repaired, and the number of orphaned blocks, block entities, entities, and scheduled block/fluid ticks removed. Optionally, the ids of orphaned content that was found (for example somemod:some_block) with a count, so broken mod removals can be recognized. Ids are aggregated and capped.

Error reports

When cleanup hits an error: which component failed, the exception type, and a sanitized message and stack trace, plus how often it has occurred.

Sanitization

• Exception messages and stack traces are length-capped.
• Stack traces are rebuilt to exclude source file names and local paths.
• Unix, Windows, UNC, and file: paths are scrubbed so a username embedded in a path is never transmitted.
• A full latest.log is never sent.

Never collected

Player usernames, player UUIDs, IP addresses, server IP/hostname/address, world seed, world coordinates, chat, inventory contents, authentication/session tokens, Discord data, email addresses, arbitrary file contents, full server logs, and the installed mod list.

IP addresses

The mod does not send your IP, and the telemetry service is configured not to retain client IPs, forwarding headers, or User-Agent strings.

Random installation id

On first run a random id is generated and stored in config/sterilization_fixer/installation.json. It is not derived from your IP, server address, world seed, player data, or hardware. Delete the file to reset it. Its only purpose is to correlate anonymous reports from the same installation.

Disabling telemetry

Set enabled = false in the [telemetry] section of the server config (world/serverconfig/sterilization_fixer-server.toml), or disable individual categories:

Note: The above location may be different.

[telemetry]
    enabled = true
    sendCleanupStatistics = true
    sendErrorReports = true
    sendOrphanedRegistryIds = true