Use these skills when you need to audit database health, identify storage bloat, find invalid indexes, analyze table statistics, and manage maintenance configurations like autovacuum.
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name
cloud-sql-postgres-health
description
Use these skills when you need to audit database health, identify storage bloat, find invalid indexes, analyze table statistics, and manage maintenance configurations like autovacuum.
Usage
All scripts can be executed using Node.js. Replace <param_name> and <param_value> with actual values.
Note: The scripts automatically load the environment variables from various .env files. Do not ask the user to set vars unless skill executions fails due to env var absence.
Scripts
get_query_metrics
Fetches query level cloudmonitoring data (timeseries metrics) for queries running in Postgres instance using a PromQL query. Take projectID and instanceID from the user for which the metrics timeseries data needs to be fetched.
To use this tool, you must provide the Google Cloud projectId and a PromQL query.
Generate PromQL query for Postgres query metrics. Use the provided metrics and rules to construct queries, Get the labels like instance_id, query_hash from user intent. If query_hash is provided then use the per_query metrics. Query hash and query id are same.
Defaults:
Interval: Use a default interval of 5m for _over_time aggregation functions unless a different window is specified by the user.
PromQL Query Examples:
Basic Time Series: avg_over_time({"__name__"="cloudsql.googleapis.com/database/postgresql/insights/aggregate/execution_time","monitored_resource"="cloudsql_instance_database","project_id"="my-projectId","resource_id"="my-projectId:my-instanceId"}[5m])
Top K: topk(30, avg_over_time({"__name__"="cloudsql.googleapis.com/database/postgresql/insights/aggregate/execution_time","monitored_resource"="cloudsql_instance_database","project_id"="my-projectId","resource_id"="my-projectId:my-instanceId"}[5m]))
Percentile with groupby on resource_id, database: quantile by ("resource_id","database")(0.99,avg_over_time({"__name__"="cloudsql.googleapis.com/database/postgresql/insights/aggregate/execution_time","monitored_resource"="cloudsql_instance_database","project_id"="my-projectId","resource_id"="my-projectId:my-instanceId"}[5m]))
Available Metrics List: metricname. description. monitored resource. labels. resource_id label format is project_id:instance_id which is actually instance id only. aggregate is the aggregated values for all query stats, Use aggregate metrics if query id is not provided. For perquery metrics do not fetch querystring unless specified by user specifically. Have the aggregation on query hash to avoid fetching the querystring. Do not use latency metrics for anything.
cloudsql.googleapis.com/database/postgresql/insights/aggregate/execution_time: Accumulated aggregated query execution time since the last sample. cloudsql_instance_database. user, client_addr, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/aggregate/io_time: Accumulated aggregated IO time since the last sample. cloudsql_instance_database. user, client_addr, io_type, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/aggregate/lock_time: Accumulated aggregated lock wait time since the last sample. cloudsql_instance_database. user, client_addr, lock_type, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/aggregate/row_count: Aggregated number of retrieved or affected rows since the last sample. cloudsql_instance_database. user, client_addr, project_id, resource_id.
Generate a PostgreSQL EXPLAIN plan in JSON format for a single SQL statement—without executing it. This returns the optimizer's estimated plan, costs, and rows (no ANALYZE, no extra options). Use in production safely for plan inspection, regression checks, and query tuning workflows.
Parameters
Name
Type
Description
Required
Default
query
string
The SQL statement for which you want to generate plan (omit the EXPLAIN keyword).
Yes
get_system_metrics
Fetches system level cloudmonitoring data (timeseries metrics) for a Postgres instance using a PromQL query. Take projectId and instanceId from the user for which the metrics timeseries data needs to be fetched.
To use this tool, you must provide the Google Cloud projectId and a PromQL query.
Generate PromQL query for Postgres system metrics. Use the provided metrics and rules to construct queries, Get the labels like instance_id from user intent.
Defaults:
Interval: Use a default interval of 5m for _over_time aggregation functions unless a different window is specified by the user.
PromQL Query Examples:
Basic Time Series: avg_over_time({"__name__"="cloudsql.googleapis.com/database/cpu/utilization","monitored_resource"="cloudsql_database","project_id"="my-projectId","database_id"="my-projectId:my-instanceId"}[5m])
Top K: topk(30, avg_over_time({"__name__"="cloudsql.googleapis.com/database/cpu/utilization","monitored_resource"="cloudsql_database","project_id"="my-projectId","database_id"="my-projectId:my-instanceId"}[5m]))
Percentile with groupby on database_id: quantile by ("database_id")(0.99,avg_over_time({"__name__"="cloudsql.googleapis.com/database/cpu/utilization","monitored_resource"="cloudsql_database","project_id"="my-projectId","database_id"="my-projectId:my-instanceId"}[5m]))
Available Metrics List: metricname. description. monitored resource. labels. database_id is actually the instance id and the format is project_id:instance_id.
cloudsql.googleapis.com/database/postgresql/new_connection_count: Count of new connections added to the postgres instance. cloudsql_database. database, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/backends_in_wait: Number of backends in wait in postgres instance. cloudsql_database. backend_type, wait_event, wait_event_type, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/transaction_count: Delta count of number of transactions. cloudsql_database. database, transaction_type, project_id, database_id.
cloudsql.googleapis.com/database/memory/components: Memory stats components in percentage as usage, cache and free memory for the database. cloudsql_database. component, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/external_sync/max_replica_byte_lag: Replication lag in bytes for Postgres External Server (ES) replicas. Aggregated across all DBs on the replica. cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/cpu/utilization: Current CPU utilization represented as a percentage of the reserved CPU that is currently in use. Values are typically numbers between 0.0 and 1.0 (but might exceed 1.0). Charts display the values as a percentage between 0% and 100% (or more). cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/disk/bytes_used_by_data_type: Data utilization in bytes. cloudsql_database. data_type, project_id, database_id.
cloudsql.googleapis.com/database/disk/read_ops_count: Delta count of data disk read IO operations. cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/disk/write_ops_count: Delta count of data disk write IO operations. . , .
Parameters
Name
Type
Description
Required
Default
projectId
string
The Id of the Google Cloud project.
Yes
query
string
The promql query to execute.
Yes
list_active_queries
List the top N (default 50) currently running queries (state='active') from pg_stat_activity, ordered by longest-running first. Returns pid, user, database, application_name, client_addr, state, wait_event_type/wait_event, backend/xact/query start times, computed query_duration, and the SQL text.
Parameters
Name
Type
Description
Required
Default
min_duration
string
Optional: Only show queries running at least this long (e.g., '1 minute', '1 second', '2 seconds').
No
1 minute
exclude_application_names
string
Optional: A comma-separated list of application names to exclude from the query results. This is useful for filtering out queries from specific applications (e.g., 'psql', 'pgAdmin', 'DBeaver'). The match is case-sensitive. Whitespace around commas and names is automatically handled. If this parameter is omitted, no applications are excluded.
No
``
limit
integer
Optional: The maximum number of rows to return.
No
50
list_database_stats
Parameters
Name
Type
Description
Required
Default
database_name
string
Optional: A specific database name pattern to search for.
No
``
include_templates
boolean
Optional: Whether to include template databases in the results.
No
false
database_owner
string
Optional: A specific database owner name pattern to search for.
No
``
default_tablespace
string
Optional: A specific default tablespace name pattern to search for.
No
``
order_by
string
Optional: The field to order the results by. Valid values are 'size' and 'commit'.
No
``
limit
integer
Optional: The maximum number of rows to return.
No
10
list_locks
Identifies all locks held by active processes showing the process ID, user, query text, and an aggregated list of all transactions and specific locks (relation, mode, grant status) associated with each process.
list_query_stats
Lists performance statistics for executed queries ordered by total time, filtering by database name pattern if provided. This tool requires the pg_stat_statements extension to be installed. The tool returns the database name, query text, execution count, timing metrics (total, min, max, mean), rows affected, and buffer cache I/O statistics (hits and reads).
Parameters
Name
Type
Description
Required
Default
database_name
string
Optional: The database name to list query stats for.
No
``
limit
integer
Optional: The maximum number of results to return. Defaults to 50.
No
50
long_running_transactions
Identifies and lists database transactions that exceed a specified time limit. For each of the long running transactions, the output contains the process id, database name, user name, application name, client address, state, connection age, transaction age, query age, last activity age, wait event type, wait event, and query string.
Parameters
Name
Type
Description
Required
Default
min_duration
string
Optional: Only show transactions running at least this long (e.g., '1 minute', '15 minutes', '30 seconds').
No
5 minutes
limit
integer
Optional: The maximum number of long-running transactions to return. Defaults to 20.
No
20
cloudsql.googleapis.com/database/postgresql/insights/perquery/execution_time: Accumulated execution times per user per database per query. cloudsql_instance_database. user, client_addr, querystring, query_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/perquery/io_time: Accumulated IO time since the last sample per query. cloudsql_instance_database. user, client_addr, io_type, querystring, query_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/perquery/lock_time: Accumulated lock wait time since the last sample per query. cloudsql_instance_database. user, client_addr, lock_type, querystring, query_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/perquery/row_count: The number of retrieved or affected rows since the last sample per query. cloudsql_instance_database. user, client_addr, querystring, query_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/perquery/shared_blk_access_count: Shared blocks accessed by statement execution per query. cloudsql_instance_database. user, client_addr, access_type, querystring, query_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/pertag/execution_time: Accumulated execution times since the last sample. cloudsql_instance_database. user, client_addr, action, application, controller, db_driver, framework, route, tag_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/pertag/io_time: Accumulated IO time since the last sample per tag. cloudsql_instance_database. user, client_addr, action, application, controller, db_driver, framework, route, io_type, tag_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/pertag/lock_time: Accumulated lock wait time since the last sample per tag. cloudsql_instance_database. user, client_addr, action, application, controller, db_driver, framework, route, lock_type, tag_hash, project_id, resource_id.
cloudsql.googleapis.com/database/postgresql/insights/pertag/row_count: The number of retrieved or affected rows since the last sample per tag. cloudsql_instance_database. user, client_addr, action, application, controller, db_driver, framework, route, tag_hash, project_id, resource_id.
cloudsql_database
project_id
database_id
cloudsql.googleapis.com/database/postgresql/num_backends_by_state: Number of connections to the Cloud SQL PostgreSQL instance, grouped by its state. cloudsql_database. database, state, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/num_backends: Number of connections to the Cloud SQL PostgreSQL instance. cloudsql_database. database, project_id, database_id.
cloudsql.googleapis.com/database/network/received_bytes_count: Delta count of bytes received through the network. cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/network/sent_bytes_count: Delta count of bytes sent through the network. cloudsql_database. destination, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/deadlock_count: Number of deadlocks detected for this database. cloudsql_database. database, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/blocks_read_count: Number of disk blocks read by this database. The source field distingushes actual reads from disk versus reads from buffer cache. cloudsql_database. database, source, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/tuples_processed_count: Number of tuples(rows) processed for a given database for operations like insert, update or delete. cloudsql_database. operation_type, database, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/tuple_size: Number of tuples (rows) in the database. cloudsql_database. database, tuple_state, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/vacuum/oldest_transaction_age: Age of the oldest transaction yet to be vacuumed in the Cloud SQL PostgreSQL instance, measured in number of transactions that have happened since the oldest transaction. cloudsql_database. oldest_transaction_type, project_id, database_id.
cloudsql.googleapis.com/database/replication/log_archive_success_count: Number of successful attempts for archiving replication log files. cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/replication/log_archive_failure_count: Number of failed attempts for archiving replication log files. cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/postgresql/transaction_id_utilization: Current utilization represented as a percentage of transaction IDs consumed by the Cloud SQL PostgreSQL instance. Values are typically numbers between 0.0 and 1.0. Charts display the values as a percentage between 0% and 100% . cloudsql_database. project_id, database_id.
cloudsql.googleapis.com/database/postgresql/num_backends_by_application: Number of connections to the Cloud SQL PostgreSQL instance, grouped by applications. cloudsql_database. application, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/tuples_fetched_count: Total number of rows fetched as a result of queries per database in the PostgreSQL instance. cloudsql_database. database, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/tuples_returned_count: Total number of rows scanned while processing the queries per database in the PostgreSQL instance. cloudsql_database. database, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/temp_bytes_written_count: Total amount of data (in bytes) written to temporary files by the queries per database. cloudsql_database. database, project_id, database_id.
cloudsql.googleapis.com/database/postgresql/temp_files_written_count: Total number of temporary files used for writing data while performing algorithms such as join and sort. cloudsql_database. database, project_id, database_id.
