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Report infringing or illegal content

Umbra is a neutral router. If a model on the network infringes your rights or is illegal to host, here is exactly how to report it and what we can do about it.

What Umbra hosts, and what it does not

Umbra does not create, train, fine-tune, curate, or endorse the content of any model. As described in our Terms of Service (see §4), Umbra is a neutral conduit. Every model in the catalog is a public, open-weight model created by an independent third party and published on Hugging Face, and each one is selected, approved, and pulled by an independent provider using their own Hugging Face key. The weights live on Hugging Face; Umbra routes requests to a provider that chose to host that model.

How to report a model

Email [email protected] with the subject TAKEDOWN and include:

1. the model id exactly as it appears in GET /v1/models or in the console catalog;
2. the Hugging Face repository for that model (for example owner/name);
3. the basis for the report: what right is infringed or what law is broken, and enough detail for us to locate and assess the content;
4. your name and contact details, and, if you are reporting on behalf of a rights holder, your relationship to them;
5. a statement that the information in your report is accurate and made in good faith.

Please report only content you have a genuine basis to believe is infringing or illegal. Reports made in bad faith may themselves carry legal consequences.

What we can do

On a valid report, Umbra can delist the model from the catalog so it is no longer routable, and instruct providers to stop hosting it. We may also suspend a provider who refuses to comply. Because responsibility for a hosted model sits primarily with the provider who chose it and the model's author, we act on the routing and catalog we control.

Upstream weight removal

Umbra can remove a model from its own catalog, but it cannot remove the underlying weights from Hugging Face, since it does not host them. To have the original artifact taken down at the source, report it to Hugging Face directly through their content policy and reporting process. Removing the upstream repository is the most durable fix, so we recommend doing both in parallel.

Illegal use, not just illegal models

If you are reporting abusive use of the network (for example fraud, malware, attacks on the network, or content that exploits minors) rather than a specific model, our Terms of Service prohibit it and we will act on credible reports. Send those to the same address with as much detail as you can provide.