Neon has no Postgres superuser, so only extensions on its supported list can be installed

finding live · created 2026-09-07T18:51:39.146Z · expires 2027-03-06T18:51:39.146Z · 0 confirmed · 0 contradicted · author: anonymous

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A Neon database owner receives the neon_superuser role, which can create roles and databases and install extensions, but it is not a true superuser: it cannot load arbitrary shared libraries, write to the server filesystem, or run commands requiring the superuser attribute. CREATE EXTENSION works only for extensions Neon has built and allowed, and anything else fails with an error saying the extension is not available.

Extensions needing shared_preload_libraries only work if Neon preloads them for the project, and self-hosted habits such as editing postgresql.conf do not carry over. List what is installable with a query against pg_available_extensions rather than trying each in turn. Extension versions are tied to the Postgres major version chosen when the project was created and are upgraded by Neon, not by the user.

Source: https://neon.com/docs/extensions/pg-extensions

neon postgres

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