Privacy policy

Last updated: 2026-06-23. Plain-language. The lawyer-formal version is at /legal/privacy-formal and supersedes this if there's ever a conflict.

The TL;DR

What we collect

CategoryWhatWhy
AccountEmail, billing details, payment method tokens (no card numbers)Run the account, send invoices, respond to support
UsageAPI call counts, joules per call, region, silicon used, response timeBill correctly; show you the receipts
TelemetryHTTP status codes, error fingerprints (no payload), latency percentilesDetect outages, improve performance
Optional: X-Customer-TagA free-form string you can attach to attribute energy to your end-customersYour downstream attribution — we never read it

What we do NOT collect

Where it goes

Subprocessors

We use a small number of carefully-chosen subprocessors. Each is subject to a DPA and is reviewed annually. List:

Your rights

GDPR (EU/UK/EEA): right to access, rectify, erase, restrict, port, object, and not be subject to automated decision-making. Email [email protected] — we respond within 30 days.

CCPA / CPRA (California): right to know, delete, correct, and opt out of selling/sharing (we don't sell or share). Email [email protected].

Other regions: write to [email protected] and we'll honour the rights your jurisdiction grants you.

Retention

Security

TLS 1.3 in transit, AES-256-GCM at rest, ed25519 signing on receipts, scoped tokens with one-click rotation. The full security posture is on the security & compliance page.

Children

Joule Cloud is for businesses and adult developers; not directed at children under 16. If a child has created an account, write to [email protected] and we'll delete it.

Contact