AWS managed policies for Amazon Lex

An AWS managed policy is a standalone policy that is created and administered by AWS. AWS managed policies are designed to provide permissions for many common use cases so that you can start assigning permissions to users, groups, and roles.

Keep in mind that AWS managed policies might not grant least-privilege permissions for your specific use cases because they're available for all AWS customers to use. We recommend that you reduce permissions further by defining customer managed policies that are specific to your use cases.

You cannot change the permissions defined in AWS managed policies. If AWS updates the permissions defined in an AWS managed policy, the update affects all principal identities (users, groups, and roles) that the policy is attached to. AWS is most likely to update an AWS managed policy when a new AWS service is launched or new API operations become available for existing services.

For more information, see AWS managed policies in the IAM User Guide.

AWS managed policy: AmazonLexReadOnly

You can attach the AmazonLexReadOnly policy to your IAM identities.

This policy grants read-only permissions that allow users to view all actions in the Amazon Lex and Amazon Lex V2 model building service.

Permissions details

This policy includes the following permissions:

• lex – Read-only access to Amazon Lex and Amazon Lex V2 resources in the model building service.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "lex:GetBot",
                "lex:GetBotAlias",
                "lex:GetBotAliases",
                "lex:GetBots",
                "lex:GetBotChannelAssociation",
                "lex:GetBotChannelAssociations",
                "lex:GetBotVersions",
                "lex:GetBuiltinIntent",
                "lex:GetBuiltinIntents",
                "lex:GetBuiltinSlotTypes",
                "lex:GetIntent",
                "lex:GetIntents",
                "lex:GetIntentVersions",
                "lex:GetSlotType",
                "lex:GetSlotTypes",
                "lex:GetSlotTypeVersions",
                "lex:GetUtterancesView",
                "lex:DescribeBot",
                "lex:DescribeBotAlias",
                "lex:DescribeBotChannel",
                "lex:DescribeBotLocale",
                "lex:DescribeBotVersion",
                "lex:DescribeExport",
                "lex:DescribeImport",
                "lex:DescribeIntent",
                "lex:DescribeResourcePolicy",
                "lex:DescribeSlot",
                "lex:DescribeSlotType",
                "lex:ListBots",
                "lex:ListBotLocales",
                "lex:ListBotAliases",
                "lex:ListBotChannels",
                "lex:ListBotVersions",
                "lex:ListBuiltInIntents",
                "lex:ListBuiltInSlotTypes",
                "lex:ListExports",
                "lex:ListImports",
                "lex:ListIntents",
                "lex:ListSlots",
                "lex:ListSlotTypes",
                "lex:ListTagsForResource"
            ],
            "Resource": "*"
        }
    ]
}

AWS managed policy: AmazonLexRunBotsOnly

You can attach the AmazonLexRunBotsOnly policy to your IAM identities.

This policy grants read-only permissions that allow access to run Amazon Lex and Amazon Lex V2 conversational bots.

Permissions details

This policy includes the following permissions:

• lex – Read-only access to all actions in the Amazon Lex and Amazon Lex V2 runtime.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "lex:PostContent",
                "lex:PostText",
                "lex:PutSession",
                "lex:GetSession",
                "lex:DeleteSession",
                "lex:RecognizeText",
                "lex:RecognizeUtterance",
                "lex:StartConversation"
            ],
            "Resource": "*"
        }
    ]
}

AWS managed policy: AmazonLexFullAccess

You can attach the AmazonLexFullAccess policy to your IAM identities.

This policy grants administrative permissions that allow the user permission to create, read, update, and delete Amazon Lex and Amazon Lex V2 resources, and to run Amazon Lex and Amazon Lex V2 conversational bots.

Permissions details

This policy includes the following permissions:

• lex – Allows principals read and write access to all actions in the Amazon Lex and Amazon Lex V2 model building and runtime services.

• cloudwatch – Allows principals to view Amazon CloudWatch metrics and alarms.

• iam – Allows principals to create and delete service-linked roles, pass roles, and attach and detach policies to a role. The permissions are restricted to "lex.amazonaws.com" for Amazon Lex operations and to "lexv2.amazonaws.com" for Amazon Lex V2 operations.

• kendra – Allows principals to list Amazon Kendra indexes.

• kms – Allows principals to describe AWS KMS keys and aliases.

• lambda – Allows principals to list AWS Lambda functions and manage permissions attached to any Lambda function.

• polly – Allows principals to describe Amazon Polly voices and synthesize speech.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "cloudwatch:GetMetricStatistics",
                "cloudwatch:DescribeAlarms",
                "cloudwatch:DescribeAlarmsForMetric",
                "kms:DescribeKey",
                "kms:ListAliases",
                "lambda:GetPolicy",
                "lambda:ListFunctions",
                "lex:*",
                "polly:DescribeVoices",
                "polly:SynthesizeSpeech",
                "kendra:ListIndices",
                "iam:ListRoles",
                "s3:ListAllMyBuckets",
                "logs:DescribeLogGroups",
                "s3:GetBucketLocation"
            ],
            "Resource": [
                "*"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "lambda:AddPermission",
                "lambda:RemovePermission"
            ],
            "Resource": "arn:aws:lambda:*:*:function:AmazonLex*",
            "Condition": {
                "StringEquals": {
                    "lambda:Principal": "lex.amazonaws.com"
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:GetRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/lex.amazonaws.com/AWSServiceRoleForLexBots",
                "arn:aws:iam::*:role/aws-service-role/channels.lex.amazonaws.com/AWSServiceRoleForLexChannels",
                "arn:aws:iam::*:role/aws-service-role/lexv2.amazonaws.com/AWSServiceRoleForLexV2Bots*",
                "arn:aws:iam::*:role/aws-service-role/channels.lexv2.amazonaws.com/AWSServiceRoleForLexV2Channels*"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:CreateServiceLinkedRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/lex.amazonaws.com/AWSServiceRoleForLexBots"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:AWSServiceName": "lex.amazonaws.com"
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:CreateServiceLinkedRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/channels.lex.amazonaws.com/AWSServiceRoleForLexChannels"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:AWSServiceName": "channels.lex.amazonaws.com"
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:CreateServiceLinkedRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/lexv2.amazonaws.com/AWSServiceRoleForLexV2Bots*"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:AWSServiceName": "lexv2.amazonaws.com"
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:CreateServiceLinkedRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/channels.lexv2.amazonaws.com/AWSServiceRoleForLexV2Channels*"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:AWSServiceName": "channels.lexv2.amazonaws.com"
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:DeleteServiceLinkedRole",
                "iam:GetServiceLinkedRoleDeletionStatus"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/lex.amazonaws.com/AWSServiceRoleForLexBots",
                "arn:aws:iam::*:role/aws-service-role/channels.lex.amazonaws.com/AWSServiceRoleForLexChannels",
                "arn:aws:iam::*:role/aws-service-role/lexv2.amazonaws.com/AWSServiceRoleForLexV2Bots*",
                "arn:aws:iam::*:role/aws-service-role/channels.lexv2.amazonaws.com/AWSServiceRoleForLexV2Channels*"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:PassRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/lex.amazonaws.com/AWSServiceRoleForLexBots"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:PassedToService": [
                        "lex.amazonaws.com"
                    ]
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:PassRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/lexv2.amazonaws.com/AWSServiceRoleForLexV2Bots*"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:PassedToService": [
                        "lexv2.amazonaws.com"
                    ]
                }
            }
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:PassRole"
            ],
            "Resource": [
                "arn:aws:iam::*:role/aws-service-role/channels.lexv2.amazonaws.com/AWSServiceRoleForLexV2Channels*"
            ],
            "Condition": {
                "StringEquals": {
                    "iam:PassedToService": [
                        "channels.lexv2.amazonaws.com"
                    ]
                }
            }
        }
    ]
}

Amazon Lex updates to AWS managed policies

View details about updates to AWS managed policies for Amazon Lex since this service began tracking these changes. For automatic alerts about changes to this page, subscribe to the RSS feed on the Amazon Lex Document History for Amazon Lex page.

Change	Description	Date
AmazonLexFullAccess – Update to an existing policy	Amazon Lex added new permissions to allow read-only access to Amazon Lex V2 model building service operations.	August 18, 2021
AmazonLexReadOnly – Update to an existing policy	Amazon Lex added new permissions to allow read-only access to Amazon Lex V2 model building service operations.	August 18, 2021
AmazonLexRunBotsOnly – Update to an existing policy	Amazon Lex added new permissions to allow read-only access to Amazon Lex V2 runtime service operations.	August 18, 2021
Amazon Lex started tracking changes	Amazon Lex started tracking changes for its AWS managed policies.	August 18, 2021