---
title: "List available shared preload libraries"
method: GET
path: "/projects/{project_id}/available_preload_libraries"
tags: ["Project"]
---

# List available shared preload libraries

`GET /projects/{project_id}/available_preload_libraries`

Returns the shared preload libraries available for the specified project's Postgres version.
Shared preload libraries are Postgres extensions that require the `shared_preload_libraries`
setting and a compute restart to activate.
Use this list to determine which libraries can be enabled in the project's
`settings.preload_libraries` configuration.

## Path parameters

- `project_id` string, required

## Response `200`

Successfully returned available shared preload libraries

- AvailablePreloadLibraries
  - `libraries` AvailablePreloadLibrary[]
    - `library_name` string, required
    - `description` string, required
    - `is_default` boolean, required
    - `is_experimental` boolean, required
    - `version` string, required

## Other responses

- `default` — General Error. The request may or may not be safe to retry, depending on the HTTP method, response status code, and whether a response was received. - If no response is returned from the API, a network error or timeout likely occurred. - In some cases, the request may have reached the server and been successfully processed, but the response failed to reach the client. As a result, retrying non-idempotent requests can lead to unintended results. The following HTTP methods are considered non-idempotent: `POST`, `PATCH`, `DELETE`, and `PUT`. Retrying these methods is generally **not safe**. The following methods are considered idempotent: `GET`, `HEAD`, and `OPTIONS`. Retrying these methods is **safe** in the event of a network error or timeout. Any request that returns a `503 Service Unavailable` response is always safe to retry. Any request that returns a `423 Locked` response is safe to retry. `423 Locked` indicates that the resource is temporarily locked, for example, due to another operation in progress.

---

[API](https://skmtc.net/neon/apis/neon-api.md) · [All operations](https://skmtc.net/neon/apis/neon-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/neon/neon-api/versions/cfde79a5c713/schema)