PostgreSQL

# PostgreSQL

Run read-only SQL against a PostgreSQL database. Point it at a replica, never at the primary of a system of record.

- **Publisher of the server:** Model Context Protocol
- **Upstream:** https://github.com/modelcontextprotocol/servers
- **Documentation:** https://github.com/modelcontextprotocol/servers/tree/main/src/postgres
- **Transport:** stdio (local process)
- **Command:** `npx -y @modelcontextprotocol/server-postgres postgresql://localhost/mydb`

## Credentials and configuration

- Database connection string as the final argument

These are **placeholders describing what to supply**; the registry stores no credentials. Enter real values in your own AO instance when you create the connection.

## Tools (1)

- `query` — Run a SQL query and return the resulting rows.

## Risk

Declared risk: **high**. None of the listed tools is named as a dedicated write operation (judged from tool names only; a general-purpose tool such as a SQL or fetch call can still have effects — see the declared risk).

> This entry is a catalogue description. Installing it creates no connection and grants no agent access;
> your instance's own connection settings and approvals decide what an agent can reach.