Terms / free and open source

A preview, not a production guarantee.

Effective 28 August 2026

Fingerprint Preview is a free, open-source aid for evaluating proposed incident grouping rules. By using it, you agree to use only data you are authorized to process and to review outputs before changing a production system.

No vendor equivalence

Adapters recognize common Sentry, Bugsnag, and Rollbar event shapes. They do not reproduce, represent, or guarantee any vendor’s proprietary grouping semantics. A preview can inform a rollout; it cannot predict every future event.

No warranty

The software is provided “as is,” without warranty of any kind, under the repository’s MIT License. You remain responsible for alerting, incident response, backups, access control, and production rule changes.

Acceptable use

Do not use the hosted interface to process data you have not scrubbed or are not authorized to handle. Do not attempt to disrupt the site or use it in violation of applicable law.

Source license

The CLI, library, web evaluator, and original visual assets are available under the MIT License.