Terms of Service & Copyright Policy
Effective July 21, 2026. This is a working draft prepared with AI assistance as a starting point — it has not been reviewed by a lawyer. Have it reviewed before treating it as binding, especially the operator identification and the DMCA section below.
PKL is operated from Mexico. A registered business entity is in formation, and this page will be updated to name the legal operator once that is complete. References to "PKL," "we," "us," or "our" in this document mean the operator of the Service.
Contact for legal notices, DMCA takedown requests, and account or data requests: legal@personalknowledgeledger.com.
1. What PKL is
Personal Knowledge Ledger ("PKL") is a personal study tool. You give it text extracted from a course, certification, or training you have already paid for and have the right to use, and it synthesizes that material into a private, queryable vault: concept pages, citations, spaced-repetition teach-back, cross-course debate and benchmarking, and a usage-based ROI ledger. PKL does not create, license, or sell course content of its own — every piece of source material in your vault comes from you.
2. Accounts
You sign in with Google via Supabase Auth. You are responsible for activity under your account. One account is for one person — see Section 4 on account sharing.
3. Your content and your responsibility
Before ingesting anything, you affirm — via a checkbox on the ingest form, enforced by the server, not just shown in the UI — that you have the right to use the material you are uploading personally and that you will not redistribute vault output derived from it. That affirmation is a term of this agreement, not a formality: if it turns out to be false, Sections 4 and 8 below apply.
You retain whatever rights you already had in material you upload. PKL claims no ownership over your source material or the concept pages synthesized from it. You grant us only the limited right to process, store, and transform that material as needed to operate the Service for you.
4. Respecting third-party course content — anti-piracy policy
PKL exists so you can retain and use knowledge from courses you already paid for — it is not a tool for reproducing, redistributing, or reselling someone else's paid or copyrighted training material. This matters more here than on most software, because the entire product works by taking in content you did not create. The following are violations of these Terms:
- Uploading material you don't personally have the right to use — course content you haven't purchased, employer-confidential training material you weren't authorized to remove, or someone else's notes or recordings without their consent.
- Using Query, Debate, or Benchmark to reconstruct the original — asking the Service, directly or through repeated/scripted requests, to reproduce large verbatim portions of ingested source material rather than to synthesize or cite it. (Ingestion itself is server-capped — citations are truncated and limited per concept — specifically so the Service cannot become a full-text copy of what you uploaded.)
- Sharing your account, vault, or exported output with anyone who has not themselves purchased the underlying course — this includes account-sharing to give someone else access to material they didn't buy.
- Circumventing technical limits put in place to prevent bulk extraction — rate limits, citation caps, or scripting requests to route around either.
Consequences for violating this section include, without limitation:
- Immediate suspension or termination of your account, without refund.
- Cooperation with the affected rights holder, including providing account and usage information if we are legally required to.
- You remain personally liable to the original content owner for any infringement — PKL is a personal study tool, not a shield from copyright liability.
- Repeat violations result in a permanent account ban.
To stay on the right side of this: only upload material you personally purchased or have explicit permission to use; don't upload employer-confidential material without authorization; don't upload material containing other people's personal information without their consent. If you're a course creator or rights holder and believe your material has been misused through PKL, see Section 8 below.
5. Our intellectual property
The PKL software, brand, UI, and any original text we write (not synthesized from your uploads — e.g. product copy, teach-back prompts, this document) belong to us and are protected by copyright. You may not copy, reverse-engineer, or redistribute the Service itself outside the ordinary use of your own account.
6. Subscription, billing, and cancellation
Subscriptions are billed through Stripe. Cancelling stops future billing but does not cut off access early — you keep full access through the billing period you already paid for. Refunds are not provided for partial periods.
7. Your data and deletion
You can permanently delete any course from your vault at any time — this removes the course and everything derived from it (concepts, citations, relationships) immediately and irreversibly. You can also permanently delete your entire account from the Digest page's "Danger zone" — this cancels any active subscription immediately and removes every course, concept, and citation you have, with no undo. If you'd rather not do it yourself, email the contact address above and we'll do it for you.
8. Copyright / DMCA notice-and-takedown procedure
This section describes a notice-and-takedown process modeled on the U.S. Digital Millennium Copyright Act, adopted here as our voluntary policy for handling infringement claims — since the Service is governed by Mexican law (Section 11), this section is a contractual commitment we make to rights holders and users, not a claim to U.S. DMCA safe-harbor status (which would additionally require registering a designated agent with the U.S. Copyright Office).
To submit a takedown notice, send the contact address above:
- Identification of the copyrighted work you believe was infringed.
- Identification of the material and its location within the Service (e.g. the account, course, or concept involved), specific enough for us to locate it.
- Your contact information (name, address, phone, email).
- A statement that you have a good-faith belief the use is not authorized by the copyright owner, its agent, or the law.
- A statement, made under penalty of perjury, that the information in the notice is accurate and that you are the copyright owner or authorized to act on their behalf.
- Your physical or electronic signature.
On receiving a complete notice, we will review it, may remove or disable access to the reported material, and will notify the account holder who uploaded it.
Counter-notification: if your content was removed and you believe this was a mistake, you may send a counter-notice with your identification of the removed material, a statement under penalty of perjury that you have a good-faith belief the removal was in error, your contact information, and your consent to the jurisdiction in Section 11. Absent a legal action from the original complainant, we may reinstate the material.
Repeat infringers: accounts that are the subject of repeated valid takedown notices will be terminated.
9. Disclaimers
Concept synthesis, citations, debate, and benchmarking are AI-generated from the material you provide and may contain errors, omissions, or misattributions — verify anything consequential against your original source. The Service is provided "as is," without warranty of any kind, and is not professional, legal, or certification advice.
10. Limitation of liability
To the maximum extent permitted by applicable law, we are not liable for indirect, incidental, or consequential damages arising from your use of the Service, including any liability you personally incur toward a third party under Section 4.
11. Governing law
These Terms are governed by the laws of Mexico.
12. Changes to these Terms
We may update these Terms as the Service changes. Material changes will be reflected by updating the effective date at the top of this page.
13. Contact
Questions, legal notices, DMCA claims, or data requests: legal@personalknowledgeledger.com.