By downloading, installing, or using Purgr software, the Purgr SDK, the Purgr proxy, or any associated tooling ("the Software"), you agree to these Terms of Service in full. If you do not agree, do not use Purgr.
Free Tier — The free evaluation version is provided under an open source license for personal, research, and non-commercial evaluation use. Commercial use requires a Pro license.
Pro License — Standard DEV — A non-exclusive, non-transferable license for one developer seat for commercial use. You may integrate Purgr into commercial applications and client projects. You may not sublicense or resell.
Pro License — Audit PRO — A non-exclusive license for team use covering the number of seats specified at purchase, including access to source code under the terms of the source license addendum provided at purchase. Redistribution and white-labeling are prohibited without a separate agreement.
You may use Purgr to compress LLM context windows in your own applications and infrastructure, integrate Purgr into internal development and production workflows, generate cryptographic receipts for your own audit and compliance purposes, and use the Purgr verification portal to validate receipts you have generated.
You may not reverse engineer, decompile, or attempt to extract proprietary algorithms from Purgr binaries or compiled distributions. You may not use Purgr as the basis for a competing context compression product or service. You may not remove, disable, alter, or spoof the cryptographic signing mechanism, Merkle tree construction, or receipt chain integrity checks. You may not generate, distribute, or present tampered or forged receipts as valid. You may not represent Purgr benchmark results as independently produced results of your own system. You may not use Purgr to process data in violation of applicable law or your LLM provider's terms of service.
Purgr's compression architecture, phase-progressive scoring system, Koopman operator application to conversation dynamics, and cryptographic receipt chain are proprietary and subject to pending patent protection in the United States and internationally. Nothing in these terms transfers ownership of any intellectual property to you. Your right to use Purgr is a limited license only.
Purgr generates Ed25519-signed cryptographic receipts that attest to compression decisions made during a session.
What a receipt proves — A valid receipt proves that the described compression decisions were made by an unmodified Purgr instance, that the decision record has not been tampered with since signing, and that the Merkle root correctly commits to all recorded decisions.
What a receipt does not prove — Purgr makes no warranty that receipts constitute legally sufficient evidence in any jurisdiction, regulatory proceeding, litigation, audit, or compliance review. You are solely responsible for determining whether Purgr receipts meet your specific legal, regulatory, or contractual requirements before relying on them for such purposes.
Purgr uses deterministic statistical algorithms to make compression decisions. While Purgr includes fact-protection mechanisms for high-specificity content such as currency values, dates, and named entities, no compression system guarantees perfect preservation of all content. You are responsible for validating that Purgr's output meets your accuracy requirements before use in production.
Purgr modifies message content before it is sent to LLM API providers. You remain solely responsible for ensuring that your use of Purgr complies with your LLM provider's terms of service and acceptable use policies.
Purgr is provided "as is" and "as available" without warranty of any kind, express or implied. We do not warrant that Purgr will operate without interruption or error, that compression results will meet any specific performance threshold, or that receipts will satisfy any legal or regulatory requirement.
To the maximum extent permitted by applicable law, Purgr Infrastructure shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of Purgr.
For legal inquiries: legal@purgr.dev