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Put an idle Mac to work.

Keep buyer access on the same account and add the provider side. Hosting is configured from the CLI on the Mac you host from.

Estimate your Mac

Founding providers · first 50

Found the network. Keep the best rate.

Umbra offers a 90% revenue share plus base pay for staying online. The first 50 providers keep their roster number and founding share as the network grows.

#1–50Permanent founding roster status
Base payEarn while attested, online, and ready

What the machine agrees to

Workload

  • Public HF models only. You pick, approve, and pull with your own Hugging Face key. No buyer weight uploads.
  • GGUF on Apple Silicon. In-process llama.cpp, with no separate inference HTTP server on your machine.
  • Attestation gated. Secure Enclave and MDM enrollment precede private routing.
  • Prompts stay private. They are decrypted in memory, zeroized after each request, and never written to disk or logs.

Hardware

Apple Silicon Macs, M1 or newer. Unified memory decides which models you can serve; higher RAM unlocks larger GGUFs.

  • macOS 14+ is required by the current provider client and installer.
  • Use a personal device. Do not enroll school or company Macs without explicit permission.
  • Projections are not payouts. The calculator uses assumed demand; live traffic varies.

Start hosting from the CLI

Register a Mac with the CLI to start earning. Four steps, about five minutes.

  1. 01
    Review the publisher and system changes

    Read the public download page before installing.

  2. 02
    Install and start guided setupcurl -fsSL https://tryumbra.dev/install.sh | shumbra setup
  3. 03
    Approve attestation

    macOS opens the signed enrollment profile in System Settings, Device Management.

  4. 04
    Pick a model and start serving

    Setup lists compatible models and starts the one you choose. umbra status confirms coordinator admission.

Sign in to start

Already signed in? Open the setup guide.

Same account, two roles. Spend credits and earn credits from one login.

You pick the models. Pull from Hugging Face with your own HF key.

Wallet settles as requests complete. Cash out when the provider wallet shows payouts available. See the provider agreement for eligibility.

Attestation, not promises. Apple hardware attestation and APNs running-code identity are live. Private routing requires code_attested and fails closed below it.