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License

Copyright 2026 Shujie Zhang.

PostGamma-owned source code and documentation are licensed under the Apache License 2.0. The complete terms are in the repository's top-level LICENSE file and are included in every release artifact.

PostGamma embeds and transforms PostgreSQL source code. PostgreSQL remains covered by the PostgreSQL License, which is included as LICENSE.postgresql in Python wheels and as licenses/LICENSE.postgresql in the static C SDK archive.

The bundled pgvector source remains covered by its PostgreSQL License. Its notice is included as LICENSE.pgvector in Python wheels and as licenses/LICENSE.pgvector in the static C SDK archive.

Artifact license files

Artifact PostGamma terms PostgreSQL terms pgvector terms
Source repository LICENSE, NOTICE licenses/LICENSE.postgresql licenses/LICENSE.pgvector
Python wheel LICENSE, NOTICE LICENSE.postgresql LICENSE.pgvector
Static C SDK archive licenses/LICENSE.postgamma, licenses/NOTICE licenses/LICENSE.postgresql licenses/LICENSE.pgvector

Every artifact also includes THIRD_PARTY_NOTICES, which identifies the upstream source and pinned revision for each bundled component.

Additional bundled libraries or extensions may carry their own notices. Check the release manifest before redistributing an artifact. A static application link does not remove the obligation to preserve the license files supplied with the release.

This page summarizes the distribution layout; the license texts control. The official project website is postgamma.com.