Get in touch.

Umbra is a small alpha, so email is the fastest way to reach us. Pick the inbox that fits and we will get back to you.

Model creators

Ask Umbra to review a public Hugging Face model and surface it to the provider network, including the model’s use case and expected demand.

General & support

[email protected]

Questions about the product, your account, API keys, billing, or anything else. This is the best first stop.

Privacy

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Questions about our Privacy Policy, what data we keep, or your data rights.

Providers

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Running or planning to run a provider Mac: setup, attestation, hosting, and the Provider Agreement.

Security

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Report a security issue. We do not have a dedicated security inbox yet, so please write to hello@ with "SECURITY" in the subject and we will route it.

Common questions may already be answered. See the FAQ, the quickstart, or the live status page. For legal terms, see Terms, Privacy, and the Provider Agreement.