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Privacy Policy

Last updated: October 15, 2026

This policy explains what personal information EELIB.IO collects when you use eelib.io, the EELIB.IO API and the EELIB Bridge, how we use it, who processes it for us, and the choices you have.

1. Who we are

EELIB.IO is operated by EETREE LLC ("we", "us"), based in the State of Washington, USA. EETREE LLC is responsible for the personal information described here.

2. What we collect

We collect only what the service needs:

  • Account: your name, email address and password. The password is stored only as a salted hash; we never see it. We also keep whether your email is verified and your plan.
  • Sign-in records: for each session, when it expires and the IP address and browser (user agent) it was started from.
  • Your content: what you add or make here — components, modules, reference designs, documents and files you upload, projects, BOMs, tool inputs and results, firmware sources and builds, test records, publications, and feedback you send with any screenshots.
  • EELIB Bridge, if you run it: the name you give the computer (by default its host name), its operating system and version; the instruments and boards it finds (model and identification string, USB serial number, vendor and product id, port); and the measurements, screenshots, waveforms and logs it sends when you ask it to.
  • Payments, when purchases are open: Stripe processes them. We receive your plan, your purchase records and a Stripe customer id — never your card number.
  • Technical data: request logs (method, path without query parameters, status and timing) and usage counters keyed by your account, a guest id or your IP address, used for rate limits and quotas.

We do not use analytics, advertising or tracking tools, and we do not sell or share personal information for advertising.

3. How we use it

  • To provide the service: store your items, run the tools you start, and show you the results.
  • To keep it working fairly: daily quotas and credits, limits on sign-ups from one IP address, refusing disposable email addresses, and investigating abuse.
  • To send account email: email verification and password reset. We do not send marketing email.
  • To answer your feedback and support requests.
  • To bill for paid plans and credits, when purchases are open.
  • To secure and debug the service and to meet legal obligations.

Operators can see your account details (name, email, plan, verification) and how many items, runs and files you have, but not the content of your items — except feedback you send us, or where needed to keep the service secure or when the law requires it.

4. AI processing

Some tools send the content a task needs to an AI model provider: Anthropic, Google (Gemini), OpenAI or DeepSeek, depending on the tool and our configuration. This can include text you enter, datasheets and files you choose, images (for example Test Bench camera frames or instrument screenshots), design data, test records, project records, and firmware sources and build logs. Some tasks send the same document to more than one provider to cross-check the results.

  • Providers process this content under their API terms to return a result.
  • We do not use your content to train AI models.
  • For each AI call we keep the task, model, outcome, timing and token counts — not the prompt or the answer.
  • Readings of public datasheets may be cached for up to 120 days and reused; files that only you uploaded are never cached this way.

AI results are labelled as generated and must be reviewed; see the Terms of Service.

5. Who else processes your information

We do not sell your personal information. We share it only as follows:

  • Service providers that run the service for us: Vercel (website), Railway (servers, database and cache), Cloudflare (file storage), Resend (account email), Stripe (payments), the AI providers named above, and a build service for Firmware Studio when it is enabled.
  • Data sources: part numbers and search terms — never your identity — are sent to DigiKey, Mouser and other component catalogs to look up parts and prices. Links you paste (for example GitHub or GitLab repositories) are fetched from their sites.
  • Publishing: Publish Studio prepares materials; you publish them yourself on other platforms, whose own policies then apply.
  • Legal reasons: when required by law, or to protect the rights, property or safety of users, the public or us.
  • Business transfers: if EETREE LLC is involved in a merger, acquisition or sale of assets, under this policy's protections.

6. Cookies and browser storage

We use only cookies the site needs:

  • eelib.session_token: keeps you signed in; it lasts 14 days and is renewed while you use the site.
  • eelib_guest_id: an anonymous id that counts what a visitor who is not signed in has used; 30 days.
  • eelib_locale: your language choice; 1 year.

The site also keeps some preferences and drafts in your browser's own storage (favorites, parts picked for comparison, the project you are working for, your camera choice, local copies of drafts). There are no third-party, analytics or advertising cookies.

7. Keeping and deleting data

  • Your content is kept while your account exists. Deleting an item archives it: it leaves your lists but is kept and can be restored. Saved versions are never changed.
  • Billing records are kept as long as accounting and tax law require.
  • Rate-limit counters expire within a day; a sign-in session ends 14 days after it was last renewed.
  • Our hosting provider keeps daily database backups for a limited period.

To close your account and have your personal information deleted, ask us through Help & feedback. We will delete or anonymize it within 30 days, except what the law requires us to keep.

8. Your choices and rights

  • Access and export: you can see everything you keep here, and export items such as assets (with their files), BOMs, reports and firmware packages.
  • Correction: ask us through Help & feedback to correct your account details.
  • Deletion: see the section above.

Depending on where you live — for example California, Washington, the European Union or the United Kingdom — you may have further rights to access, correct, delete or port your personal information, or to object to or restrict its use. We do not sell personal information or share it for cross-context behavioral advertising, and we will not treat you differently for using these rights. To use them, contact us through Help & feedback.

9. Security

Each account's data is limited to its owner by the database itself, not only by the application. Traffic is encrypted in transit (HTTPS), files are stored privately and downloaded through short-lived links, and passwords are stored only as salted hashes. No system is perfectly secure; if we learn of a breach affecting you, we will tell you as the law requires.

10. International processing

We are based in the United States. Our service providers may process information in the United States and other countries; when a tool uses DeepSeek, the content it sends is processed in China. Data protection laws there may differ from those where you live.

11. Children

EELIB.IO is not meant for anyone under 16, and we do not knowingly collect personal information from them. If you believe a child has given us personal information, contact us and we will delete it.

12. Changes to this policy

We will post any change here with a new date. If a change materially affects how we use your personal information, we will tell you on the site or by email before it takes effect.

13. Contact

Questions or requests about privacy: use Help & feedback on the site, and say that it is about privacy.