diff --git a/.cursor/mcp.json b/.cursor/mcp.json
index 18536e1..c690441 100644
--- a/.cursor/mcp.json
+++ b/.cursor/mcp.json
@@ -2,6 +2,9 @@
   "mcpServers": {
     "intai-mariadb": {
       "url": "http://127.0.0.1:8765/sse"
+    },
+    "intai-postgres": {
+      "url": "http://127.0.0.1:8766/sse"
     }
   }
 }
diff --git a/.env.example b/.env.example
index 659bcb3..51ee988 100644
--- a/.env.example
+++ b/.env.example
@@ -43,3 +43,7 @@ INTAI_DOCKER_NETWORK=intai-docker_default
 MCP_MARIADB_PORT=8765
 # Опционально: зафиксировать ревизию MariaDB/mcp при сборке образа (ветка или тег).
 # MARIADB_MCP_GIT_REF=main
+
+### MCP PostgreSQL (Cursor, Claude Code) ##################
+# Host port for SSE; the same port must be in .cursor/mcp.json and .mcp.json of the project (url .../sse).
+MCP_POSTGRES_PORT=8766
diff --git a/README.md b/README.md
index b0e7443..6e5e1c3 100644
--- a/README.md
+++ b/README.md
@@ -113,6 +113,24 @@ Optional MCP server so Cursor can query the `db` container over the Docker netwo
 
 First image build can take a while (upstream MariaDB MCP dependencies).
 
+### PostgreSQL, pgAdmin, Postgres MCP
+
+Services `pgsql`, `pgadmin`, `mcp-postgres` are described in `docker-compose.base.yml`; copy them from
+`docker-compose.postgres.yml.example` into your `docker-compose.yml` (volumes `database-pgsql` and `pgadmin` too).
+
+`dc up -d pgsql pgadmin mcp-postgres`
+
+- `pgsql` — official `postgres:18` image. Port `5432`, user, password and database `intai`.
+  Since 18 the data lives in `/var/lib/postgresql/<major>/docker`, so the volume is mounted at `/var/lib/postgresql`.
+  Another major version does not start on the same volume — dump and restore.
+- `pgadmin` — pgAdmin 4 in desktop mode, no login: http://pgadmin.intai.localhost (or the port from the example). The `intai` server comes from `config/pgadmin/servers.json` on every start; the password (`intai`) is asked once, tick "Save password".
+  Register the server once: host `pgsql`, port `5432`, user `intai`, password `intai`.
+- `mcp-postgres` — [Postgres MCP Pro](https://github.com/crystaldba/postgres-mcp), SSE on
+  `http://127.0.0.1:${MCP_POSTGRES_PORT:-8766}/sse`.
+- `./bash/psql.sh [database] [user]` — psql inside the container.
+
+Transfer of the intai database from MariaDB and its verification: `docs/PostgreSQL.md` in the intai project.
+
 ### Workspace
 
 For execute composer update|install or nodejs operations, also yarn, npm and all node-builds.
diff --git a/bash/psql.sh b/bash/psql.sh
new file mode 100755
index 0000000..66488c9
--- /dev/null
+++ b/bash/psql.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+# psql in the pgsql container. Usage: ./psql.sh [database] [user] — defaults: intai intai
+SCRIPT_DIR="$(realpath $(dirname "$(readlink -f "$0")"))"
+
+. $SCRIPT_DIR/_docker-cmd.sh || {
+  echo "no docker cmd is presented" && exit 1
+}
+
+CONTAINER=$(docker ps --filter "label=com.docker.compose.service=pgsql" --format '{{.ID}}' | head -n1)
+
+if [[ -z "${CONTAINER}" ]]; then
+  echo "Unable to find container: pgsql"
+  exit 1
+fi
+
+$DOCKER_CMD exec -ti ${CONTAINER} psql -U "${2:-intai}" -d "${1:-intai}"
diff --git a/config/pgadmin/servers.json b/config/pgadmin/servers.json
new file mode 100644
index 0000000..5c6a966
--- /dev/null
+++ b/config/pgadmin/servers.json
@@ -0,0 +1,13 @@
+{
+    "Servers": {
+        "1": {
+            "Name": "intai",
+            "Group": "Servers",
+            "Host": "pgsql",
+            "Port": 5432,
+            "MaintenanceDB": "intai",
+            "Username": "intai",
+            "SSLMode": "prefer"
+        }
+    }
+}
diff --git a/docker-compose.base.yml b/docker-compose.base.yml
index 2a6368d..8fe10ae 100755
--- a/docker-compose.base.yml
+++ b/docker-compose.base.yml
@@ -93,6 +93,33 @@ services:
       PMA_HOST: db
       PMA_USER: root
       PMA_PASSWORD: 123456
+  # PostgreSQL 18, official image. Since 18 the data lives in /var/lib/postgresql/18/docker,
+  # so the volume (declared in the compose file that extends this service) is mounted at /var/lib/postgresql.
+  pgsql:
+    image: postgres:18
+    restart: always
+    environment:
+      POSTGRES_USER: intai
+      POSTGRES_PASSWORD: intai
+      POSTGRES_DB: intai
+    volumes:
+      - database-pgsql:/var/lib/postgresql
+      - ./hostfiles:/hostfiles
+  pgadmin:
+    image: dpage/pgadmin4:9
+    restart: always
+    environment:
+      PGADMIN_DEFAULT_EMAIL: info@wpstudio.ru
+      PGADMIN_DEFAULT_PASSWORD: postgres
+      # desktop mode: no login page, a single local user
+      PGADMIN_CONFIG_SERVER_MODE: 'False'
+      PGADMIN_CONFIG_MASTER_PASSWORD_REQUIRED: 'False'
+      # the intai server is registered from servers.json on every start
+      PGADMIN_SERVER_JSON_FILE: /pgadmin4/servers.json
+      PGADMIN_REPLACE_SERVERS_ON_STARTUP: 'True'
+    volumes:
+      - pgadmin:/var/lib/pgadmin
+      - ./config/pgadmin/servers.json:/pgadmin4/servers.json:ro
   inbucket:
     image: inbucket/inbucket
     restart: always
@@ -154,3 +181,12 @@ services:
       LOG_FILE: /tmp/mcp_server.log
     ports:
       - "127.0.0.1:${MCP_MARIADB_PORT:-8765}:9001"
+  # Postgres MCP Pro (https://github.com/crystaldba/postgres-mcp), SSE like mcp-mariadb.
+  mcp-postgres:
+    image: crystaldba/postgres-mcp:0.3.0
+    restart: unless-stopped
+    environment:
+      DATABASE_URI: postgresql://intai:intai@pgsql:5432/intai
+    command: [ "--transport=sse", "--sse-host=0.0.0.0" ]
+    ports:
+      - "127.0.0.1:${MCP_POSTGRES_PORT:-8766}:8000"
diff --git a/docker-compose.postgres.yml.example b/docker-compose.postgres.yml.example
index fda5e70..6705b90 100755
--- a/docker-compose.postgres.yml.example
+++ b/docker-compose.postgres.yml.example
@@ -1,27 +1,29 @@
+# PostgreSQL + pgAdmin 4 + Postgres MCP. Services are described in docker-compose.base.yml.
+#
+# Standalone:  docker compose -f docker-compose.postgres.yml.example up -d
+# Or copy the services into your docker-compose.yml next to db/pma (as intai does).
 services:
-  dbpg:
-    image: postgres
-    restart: always
-    environment:
-      POSTGRES_PASSWORD: postgres
-    volumes:
-      - databasepg:/var/lib/postgresql/data
-      - ./hostfiles:/hostfiles
+  pgsql:
+    extends:
+      file: docker-compose.base.yml
+      service: pgsql
     ports:
       - "5432:5432"
-  db-project:
-    image: postgis/postgis:14-3.3
-    environment:
-      - POSTGRES_DB=project_db
-      - POSTGRES_USER=project_db_user
-      - POSTGRES_PASSWORD=project_db_password
+  pgadmin:
+    extends:
+      file: docker-compose.base.yml
+      service: pgadmin
+    depends_on:
+      - pgsql
     ports:
-      - "5434:5432"
-    healthcheck:
-      test: [ "CMD-SHELL", "pg_isready" ]
-      interval: 10s
-      timeout: 5s
-      retries: 5
+      - "83:80"
+  mcp-postgres:
+    extends:
+      file: docker-compose.base.yml
+      service: mcp-postgres
+    depends_on:
+      - pgsql
 
 volumes:
-  databasepg:
+  database-pgsql:
+  pgadmin: