When should I attach AmazonEventBridgeReadOnlyAccess?

The Amazon EventBridge User Guide says you can attach it to your users, groups and roles, and to use it when you need to view EventBridge resources and their configuration without changing them, for example to audit access or troubleshoot event delivery.

What are the security risks of AmazonEventBridgeReadOnlyAccess?

The policy grants no write actions, but it applies to all resources and also reads event bus resource policies and resource tags. AWS managed policies don't grant least privilege permissions, and you must consider the security risk of granting principals more permissions than they need. AWS updates to the policy affect every identity it is attached to.

AmazonEventBridgeReadOnlyAccess

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Summary

Provides read only access to Amazon EventBridge. The Amazon EventBridge User Guide says it grants permissions to use all read EventBridge actions, including EventBridge Pipes, Schemas and Scheduler.

Permissions imported from the AWS Managed Policy Reference Guide; other sections reviewed against the listed AWS sources.

Identity

ARN: arn:aws:iam::aws:policy/AmazonEventBridgeReadOnlyAccess
Default version: v7
Created: 2019-07-11
Last edited: 2026-09-24
Services: events, pipes, scheduler, schemas

Control-plane actions (46)

By access level: 21 List, 25 Read.

Control-plane actions by service
Service	Granted	Access levels and limits	Granted by
EventBridge	24 of 71	13 List, 11 Read; 0 restricted, 0 conditional	events:DescribeApiDestination, events:DescribeArchive, events:DescribeConnection, events:DescribeEndpoint, events:DescribeEventBus, events:DescribeEventSource, events:DescribeReplay, events:DescribeRule, events:DescribeSubscriber, events:GetResourcePolicy, events:ListApiDestinations, events:ListArchives and 12 more
EventBridge Pipes	3 of 10	1 List, 2 Read; 0 restricted, 0 conditional	pipes:DescribePipe, pipes:ListPipes, pipes:ListTagsForResource
EventBridge Scheduler	5 of 13	2 List, 3 Read; 0 restricted, 0 conditional	scheduler:GetSchedule, scheduler:GetScheduleGroup, scheduler:ListScheduleGroups, scheduler:ListSchedules, scheduler:ListTagsForResource
EventBridge Schemas	14 of 31	5 List, 9 Read; 0 restricted, 0 conditional	schemas:DescribeCodeBinding, schemas:DescribeDiscoverer, schemas:DescribeRegistry, schemas:DescribeSchema, schemas:ExportSchema, schemas:GetCodeBindingSource, schemas:GetDiscoveredSchema, schemas:GetResourcePolicy, schemas:ListDiscoverers, schemas:ListRegistries, schemas:ListSchemaVersions, schemas:ListSchemas and 2 more

EventBridge: 24 actions

events:DescribeApiDestination (Read)
events:DescribeArchive (Read)
events:DescribeConnection (Read)
events:DescribeEndpoint (Read)
events:DescribeEventBus (Read)
events:DescribeEventSource (Read)
events:DescribeReplay (Read)
events:DescribeRule (Read)
events:DescribeSubscriber (Read)
events:GetResourcePolicy (Read)
events:ListApiDestinations (List)
events:ListArchives (List)
events:ListConnections (List)
events:ListEndpoints (List)
events:ListEventBuses (List)
events:ListEventSources (List)
events:ListReplays (List)
events:ListResourcePolicies (List)
events:ListRuleNamesByTarget (List)
events:ListRules (List)
events:ListSubscribers (List)
events:ListTagsForResource (List)
events:ListTargetsByRule (List)
events:TestEventPattern (Read)

EventBridge Pipes: 3 actions

pipes:DescribePipe (Read)
pipes:ListPipes (List)
pipes:ListTagsForResource (Read)

EventBridge Scheduler: 5 actions

scheduler:GetSchedule (Read)
scheduler:GetScheduleGroup (Read)
scheduler:ListScheduleGroups (List)
scheduler:ListSchedules (List)
scheduler:ListTagsForResource (Read)

EventBridge Schemas: 14 actions

schemas:DescribeCodeBinding (Read)
schemas:DescribeDiscoverer (Read)
schemas:DescribeRegistry (Read)
schemas:DescribeSchema (Read)
schemas:ExportSchema (Read)
schemas:GetCodeBindingSource (Read)
schemas:GetDiscoveredSchema (Read)
schemas:GetResourcePolicy (Read)
schemas:ListDiscoverers (List)
schemas:ListRegistries (List)
schemas:ListSchemaVersions (List)
schemas:ListSchemas (List)
schemas:ListTagsForResource (Read)
schemas:SearchSchemas (List)

Data-plane actions (0)

By access level: none.

This policy grants no actions in this plane.

Excluded and conditional actions

No patterns are excluded by NotAction or Deny statements.

Resource scope and attachment

Resource scope across granted actions: all-resources.

Can be attached: Yes, to users, groups and roles.

Why this tier

Grants only List and Read actions.

Guidance

Practical scope

One statement on Resource "*" allows events Describe and List actions (for rules, event buses, event sources, archives, replays, connections, API destinations, endpoints and subscribers), events:TestEventPattern, events:GetResourcePolicy, events:ListResourcePolicies and events:ListTagsForResource; schemas read actions including schemas:ExportSchema, schemas:GetCodeBindingSource, schemas:GetDiscoveredSchema and schemas:SearchSchemas; scheduler:GetSchedule, scheduler:GetScheduleGroup and list actions; and pipes:DescribePipe, pipes:ListPipes and pipes:ListTagsForResource.

Use cases

View EventBridge resources and their configuration without changing them, for example to audit access or troubleshoot event delivery.

Best practices

AWS managed policies don't grant least privilege permissions. The IAM User Guide suggests using IAM Access Analyzer to see which permissions principals actually use, then writing a custom policy or generating one with only the required permissions.

Security considerations

The policy grants no write actions, but it applies to all resources and also reads event bus resource policies and the tags on EventBridge resources.
You cannot change the permissions in an AWS managed policy. If AWS updates the policy, the update affects every user, group and role it is attached to.

Assignment guidance

You can attach this policy to your users, groups and roles. The reference page also links to guidance on creating a permission set using AWS managed policies in IAM Identity Center. The Amazon EventBridge User Guide says you can attach it to your users, groups and roles. It fits where viewing EventBridge resources without changing them is intended.

Same service

Same domain

Frequently asked questions

When should I attach AmazonEventBridgeReadOnlyAccess?: The Amazon EventBridge User Guide says you can attach it to your users, groups and roles, and to use it when you need to view EventBridge resources and their configuration without changing them, for example to audit access or troubleshoot event delivery.
What does AmazonEventBridgeReadOnlyAccess grant?: It allows read actions for events, schemas, scheduler and pipes on all resources, including events:GetResourcePolicy, events:ListResourcePolicies, events:ListTagsForResource and events:TestEventPattern. It has no create, update or delete actions.
What are the security risks of AmazonEventBridgeReadOnlyAccess?: The policy grants no write actions, but it applies to all resources and also reads event bus resource policies and resource tags. AWS managed policies don't grant least privilege permissions, and you must consider the security risk of granting principals more permissions than they need. AWS updates to the policy affect every identity it is attached to.

Policy JSON

Download policy.json

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "events:DescribeRule",
        "events:DescribeEventBus",
        "events:DescribeEventSource",
        "events:ListEventBuses",
        "events:ListEventSources",
        "events:ListRuleNamesByTarget",
        "events:ListRules",
        "events:ListTargetsByRule",
        "events:TestEventPattern",
        "events:DescribeArchive",
        "events:ListArchives",
        "events:DescribeReplay",
        "events:ListReplays",
        "events:DescribeConnection",
        "events:ListConnections",
        "events:DescribeApiDestination",
        "events:ListApiDestinations",
        "events:DescribeEndpoint",
        "events:ListEndpoints",
        "events:DescribeSubscriber",
        "events:ListSubscribers",
        "events:GetResourcePolicy",
        "events:ListResourcePolicies",
        "events:ListTagsForResource",
        "schemas:DescribeCodeBinding",
        "schemas:DescribeDiscoverer",
        "schemas:DescribeRegistry",
        "schemas:DescribeSchema",
        "schemas:ExportSchema",
        "schemas:GetCodeBindingSource",
        "schemas:GetDiscoveredSchema",
        "schemas:GetResourcePolicy",
        "schemas:ListDiscoverers",
        "schemas:ListRegistries",
        "schemas:ListSchemas",
        "schemas:ListSchemaVersions",
        "schemas:ListTagsForResource",
        "schemas:SearchSchemas",
        "scheduler:GetSchedule",
        "scheduler:GetScheduleGroup",
        "scheduler:ListSchedules",
        "scheduler:ListScheduleGroups",
        "scheduler:ListTagsForResource",
        "pipes:DescribePipe",
        "pipes:ListPipes",
        "pipes:ListTagsForResource"
      ],
      "Resource": "*"
    }
  ]
}

Version history

Current version v7, edited by AWS on 2026-09-24. Version history is recorded from 2026-11-11. Earlier versions are in the IAM console under Policy versions.

Attach snippets

AWS CLI

aws iam attach-role-policy --role-name ROLE_NAME --policy-arn arn:aws:iam::aws:policy/AmazonEventBridgeReadOnlyAccess
aws iam attach-user-policy --user-name USER_NAME --policy-arn arn:aws:iam::aws:policy/AmazonEventBridgeReadOnlyAccess
aws iam attach-group-policy --group-name GROUP_NAME --policy-arn arn:aws:iam::aws:policy/AmazonEventBridgeReadOnlyAccess

CloudFormation

Resources:
  ExampleRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument: {}  # replace with your trust policy
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/AmazonEventBridgeReadOnlyAccess

Terraform

resource "aws_iam_role_policy_attachment" "amazoneventbridgereadonlyaccess" {
  role       = aws_iam_role.example.name
  policy_arn = "arn:aws:iam::aws:policy/AmazonEventBridgeReadOnlyAccess"
}

CDK (TypeScript)

role.addManagedPolicy(
  iam.ManagedPolicy.fromAwsManagedPolicyName("AmazonEventBridgeReadOnlyAccess"),
);

Sources

AmazonEventBridgeReadOnlyAccess (AWS Managed Policy Reference Guide) (retrieved 2026-11-13; supports summary, practicalScope, securityConsiderations, assignmentGuidance, faqs)
Identity-based policies for Amazon EventBridge (retrieved 2026-11-13; supports summary, useCases, assignmentGuidance, faqs)
Managed policies and inline policies (IAM User Guide) (retrieved 2026-11-12; supports securityConsiderations, faqs)
AWS managed policies for job functions (IAM User Guide) (retrieved 2026-11-12; supports bestPractices, faqs)