pg_intersection

Find geometries that intersect with a given geometry. Auto-detects SRID from target column if not specified. Default limit: 10 rows.

SERVERPostgreSQL MCP Server SOURCE@neverinfamous/postgres-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-intersection.md

WHAT IT DOES

What pg_intersection does on PostgreSQL MCP Server

AI agents call pg_intersection to retrieve information from PostgreSQL MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why pg_intersection is rated Low

This is a spatial query tool that performs read-only geometric intersection searches against PostgreSQL PostGIS data. It queries and retrieves matching geometries without creating, modifying, deleting, or executing arbitrary code. The tool has minimal blast radius—worst case it returns large result sets or consumes query resources, but causes no data mutation or external side effects.

From the tool's definition Tool name 'pg_intersection' and description 'Find geometries that intersect with a given geometry' indicates a query operation that retrieves/searches data with no modification or deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_intersection safely

PolicyLayer is an MCP gateway: it sits between your AI agents and PostgreSQL MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pg_intersection, this is the rule to start with:

pg_intersection Allowed

pg_intersection is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "pg_intersection": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect PostgreSQL MCP Server, apply this rule, and every pg_intersection call is checked against it from then on.

FAQ

Questions about pg_intersection

What does the pg_intersection tool do? +

Find geometries that intersect with a given geometry. Auto-detects SRID from target column if not specified. Default limit: 10 rows. It is categorised as a Read tool in the PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on pg_intersection? +

Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for pg_intersection: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches PostgreSQL MCP Server. Nothing to install.

What risk level is pg_intersection? +

pg_intersection is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit pg_intersection? +

Yes. Add a rate_limit block to the pg_intersection rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block pg_intersection completely? +

Set action: deny in the PolicyLayer policy for pg_intersection. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides pg_intersection? +

pg_intersection is provided by the PostgreSQL MCP Server MCP server (@neverinfamous/postgres-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

What pg_intersection does on PostgreSQL MCP Server

Why pg_intersection is rated Low

The rule that runs pg_intersection safely

Questions about pg_intersection

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