PostgreSQL Wire Protocol

The PostgreSQL frontend/backend protocol is the low-level message-based protocol used by all client drivers (libpq, JDBC, ODBC, psycopg, pgx, node-postgres, etc.) to communicate with the PostgreSQL server over TCP/IP or Unix sockets. Authentication supports password, SCRAM-SHA-256, MD5, GSSAPI, SSPI, certificate, LDAP, and other pluggable methods.

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/wire-protocol"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑
aid: postgres:wire-protocol
name: PostgreSQL Wire Protocol
description: The PostgreSQL frontend/backend protocol is the low-level message-based protocol used by
  all client drivers (libpq, JDBC, ODBC, psycopg, pgx, node-postgres, etc.) to communicate with the PostgreSQL
  server over TCP/IP or Unix sockets. Authentication supports password, SCRAM-SHA-256, MD5, GSSAPI, SSPI,
  certificate, LDAP, and other pluggable methods.
humanURL: https://www.postgresql.org/docs/current/protocol.html
baseURL: postgresql://hostname:5432
tags:
- Database
- Wire Protocol
- SQL
- Connection Protocol
properties:
- type: Documentation
  url: https://www.postgresql.org/docs/current/protocol.html
- type: Specification
  url: https://www.postgresql.org/docs/current/protocol-message-formats.html
- url: graphql/postgres-graphql.md
  type: GraphQL