[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],[],[],[],null,["# APIs & Reference\n\nCloud SQL error messages\n------------------------\n\n- [### Cloud SQL error messages\n Lists the error codes used in Cloud SQL along with a descriptive message\nfor each error code.](/sql/docs/postgres/admin-api-error-messages) \n\nCloud SQL metrics\n-----------------\n\n- [### Cloud SQL metrics\n Lists the types of metrics you see for Cloud SQL when using Metrics Explorer.](/sql/docs/postgres/admin-api/metrics)\n- [### Insights metrics\nLists the types of metrics generated by Insights.](/sql/docs/postgres/admin-api/metrics) \n\nREST API\n--------\n\n- [### Cloud SQL Admin API reference](/sql/docs/postgres/admin-api/rest) \n\nAPI overview\n------------\n\n- [### Use the Cloud SQL Admin API\n Best practices and setup information for using the Cloud SQL Admin API.](/sql/docs/postgres/admin-api)\n- [### Configure VPC Service Controls\nConfiguring VPC Service Controls for use with the Cloud SQL Admin API.](/sql/docs/postgres/admin-api/configure-service-controls) \n\nAPI basics\n----------\n\n- [### Authorize requests\n Information about authorizing your API requests for a variety of platforms.](/sql/docs/postgres/admin-api/how-tos/authorizing)\n- [### Performance tips\nSome best practices to improve the performance of API requests.](/sql/docs/postgres/admin-api/how-tos/performance) \n\nLibraries and samples\n---------------------\n\n- [### Client libraries and sample code\n Learn about the API libraries and samples available for accessing your instance.](/sql/docs/postgres/admin-api/libraries)\n\n\u003cbr /\u003e\n\ngcloud sql\n----------\n\n- [### About the gcloud CLI\n Learn how to use the gcloud sql command-line tool to manage instances.](/sql/docs/postgres/cloud-sdk)\n- [### gcloud CLI\n Reference information for gcloud sql.](/sdk/gcloud/reference/sql)\n\n\u003cbr /\u003e\n\nIAM references for Cloud SQL\n----------------------------\n\n- [### Cloud SQL permissions\n IAM permissions for Cloud SQL.](/sql/docs/postgres/iam-permissions)\n- [### Cloud SQL roles\n IAM roles for Cloud SQL.](/sql/docs/postgres/iam-roles)"]]
