Subprocessors
Last updated September 9, 2026. Plain words on purpose: if a sentence here is unclear, it is wrong, and you can tell us at hello@sigbound.com.
Sigbound uses two subprocessors to run the hosted service. Each is bound by written terms, and each is named here with what it processes.
| Subprocessor | What it does | What it processes | Where |
|---|---|---|---|
| Amazon Web Services | Hosting and networking, object storage, the database, password credentials for password accounts, email sending and receiving, CI sandboxes, logs and alarms. | The whole platform: every category of data described in the Data processing addendum. | United States, us-east-1 |
| Anthropic | The model behind Sigbound AI's reads. | For each read: the attempt's tree at the exact head being read, the goal's sentence and brief (its done-means lines and the rest of the brief), and the CI results at that head. No account data. | Anthropic's own infrastructure, under its terms |
Changes
A new or replaced subprocessor is announced by email to the owners of every space at least 30 days before it begins processing customer data. The date at the top of this page changes when the list does.