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PostgreSQL MCP Server

itunified-io/mcp-postgres

A comprehensive PostgreSQL client that exposes 27 tools across connection management, queries, schema introspection, CRUD operations, and server administration. You get parameterized queries with EXPLAIN ANALYZE, full schema exploration including indexes and constraints, and type-safe inserts with injection protection. It handles multi-database configs via YAML, supports HashiCorp Vault for credential management through AppRole authentication, and includes practical DBA tools like config reload and database sizing. Safety features like required confirmation flags on destructive operations make it suitable for production use. If you're doing database work through Claude and need more than basic queries, this covers the operational surface area you'd expect from a proper PostgreSQL client.

tool
1
transport
STDIO
env var
1
last updated
Apr 10, 2026
View on GitHub

Tools

1 tools

Public tool metadata for what this MCP can expose to an agent.

execute_custom_queryExecute a custom SQL query against the database. WARNING: Use with care. Do not expose to untrusted input.4 params

Execute a custom SQL query against the database. WARNING: Use with care. Do not expose to untrusted input.

Parameters* required
connectionStringstring
PostgreSQL connection string
querystring
SQL query to execute
timeoutnumber
Optional query timeout in milliseconds
valuesarray
Optional parameter values for the query

Sponsors

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Configuration

POSTGRES_CONNECTION_STRING

PostgreSQL connection string (e.g. postgresql://user:pass@host:5432/db)

Readme

Details

Repository
github.com/itunified-io/mcp-postgres
Category
Databases
Package
@itunified.io/mcp-postgres
Transport
STDIO
Registry
MCP registry, active

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