Files
genai-toolbox/docs/en/resources/sources/postgres.md
isaurabhuttam 0d7d8ab516 feat (tools/postgres-list-available-extensions, tools/postgres-list-installed-extensions): add tool types postgres-list-available-extensions and postgres-list-installed-extensions (#1401)
## Description

This PR adds two read-only, PostgreSQL tool kinds to MCPToolbox that
standardize discovery of extensions:

- `postgres-list-installed-extensions` – lists extensions installed in
the current database with: `name`, `version`, `schema`, `owner`
`description`.

- `postgres-list-available-extensions` – lists extensions available to
install on the cluster with: `name`, `default_version`, `description`.

Both are safe by default, and return well-typed JSON suitable for UIs,
agents, and automation.

**Test Output**
- `list_installed_extensions`

<img width="1414" height="781" alt="image"
src="https://github.com/user-attachments/assets/aab102a7-90ab-4516-9bc2-bcbfdab02bb1"
/>

- `list_available_extensions`

<img width="1421" height="774" alt="image"
src="https://github.com/user-attachments/assets/a4f80f22-bb2e-4350-acb2-12eb020d88cb"
/>



---
> Should include a concise description of the changes (bug or feature),
it's
> impact, along with a summary of the solution

## PR Checklist

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> Thank you for opening a Pull Request! Before submitting your PR, there
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> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
before writing your code! That way we can discuss the change, evaluate
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🛠️ Fixes #<issue_number_goes_here>
2025-09-17 02:24:18 +00:00

3.1 KiB

title, type, weight, description
title type weight description
PostgreSQL docs 1 PostgreSQL is a powerful, open source object-relational database.

About

PostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.

Available Tools

Pre-built Configurations

Requirements

Database User

This source only uses standard authentication. You will need to create a PostgreSQL user to login to the database with.

Example

sources:
    my-pg-source:
        kind: postgres
        host: 127.0.0.1
        port: 5432
        database: my_db
        user: ${USER_NAME}
        password: ${PASSWORD}

{{< notice tip >}} Use environment variable replacement with the format ${ENV_NAME} instead of hardcoding your secrets into the configuration file. {{< /notice >}}

Reference

field type required description
kind string true Must be "postgres".
host string true IP address to connect to (e.g. "127.0.0.1")
port string true Port to connect to (e.g. "5432")
database string true Name of the Postgres database to connect to (e.g. "my_db").
user string true Name of the Postgres user to connect as (e.g. "my-pg-user").
password string true Password of the Postgres user (e.g. "my-password").
queryParams map[string]string false Raw query to be added to the db connection string.