// MCP TOOL REFERENCE

READ ONLY POSTGRES TOOLS

3 tools from the Read Only Postgres MCP Server, categorised by risk level.

READ TOOLS

query Run a read-only SQL query against the currently connected database 2/5

WRITE TOOLS

connect Connect to a PostgreSQL database using a connection string. The connection will be used for subsequent queries until changed. 2/5 disconnect Disconnect from the current runtime database and revert to the default environment-configured connection 2/5

// FAQ

How many tools does the Read Only Postgres MCP server have? +

The Read Only Postgres MCP server exposes 3 tools across 2 categories: Read, Write.

How do I enforce policies on Read Only Postgres tools? +

Use Intercept, the open-source MCP proxy. Write YAML rules for each tool — rate limits, argument validation, or deny rules — then run Intercept in front of the Read Only Postgres server.

What risk categories do Read Only Postgres tools fall into? +

Read Only Postgres tools are categorised as Read (1), Write (2). Each category has a recommended default policy.

Enforce policies on Read Only Postgres

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept

github.com/policylayer/intercept →