Retrieve AWS regional availability information for products (service and features), sdk service APIs and CloudFormation resources. Core Features - Real-time availability checking across AWS regions - Support for AWS products, APIs and CloudFormation resources - Batch query support with filtering ...
Part of the AWS Docs and Regions server.
Free to start. No card required.
AI agents call aws___get_regional_availability to retrieve information from AWS Docs and Regions without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though aws___get_regional_availability only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"aws___get_regional_availability": {}
}
}See the full AWS Docs and Regions policy for all 5 tools.
These attack patterns abuse exactly the kind of access aws___get_regional_availability gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Retrieve AWS regional availability information for products (service and features), sdk service APIs and CloudFormation resources. Core Features - Real-time availability checking across AWS regions - Support for AWS products, APIs and CloudFormation resources - Batch query support with filtering options - Pagination if no filters are passed and all results are to be returned When to Use 1. Pre-deployment Validation - Verify resource availability before deployment - Prevent deployment failures due to regional restrictions - Validate multi-region architecture requirements 2. Architecture Planning - Design region-specific solutions - Plan multi-region deployments - Compare regional capabilities Result Format Returns a list of dictionaries with: - Resource identifiers - Resource status: * 'isAvailableIn': Resource is available * 'isNotAvailableIn': Resource is not available * 'Not Found': Resource name or identifier is not valid * and other availability status (e.g. 'isPlannedIn') Filter Guidelines The filters must be passed as an array of values and must follow the format below. 1. APIs (resource_type='api') Format: to filter on API level 'SdkServiceId+APIOperation' Example filters: - ['Athena+UpdateNamedQuery', 'ACM PCA+CreateCertificateAuthority', 'IAM+GetSSHPublicKey'] Format: to filter on SdkService level 'SdkServiceId' Example filters: - ['EC2', 'ACM PCA'] 2. CloudFormation (resource_type='cfn') Format: 'CloudformationResourceType' Example filters: - ['AWS::EC2::Instance', 'AWS::Lambda::Function', 'AWS::Logs::LogGroup'] - ['AWS::CodeBuild::Project', 'AWS::CloudTrail::Dashboard'] 3. Product - service and feature (resource_type='product') Format: 'Product' Example filters: - ['Latency-Based Routing', 'AWS Amplify', 'AWS Application Auto Scaling'] - ['PrivateLink Support', 'Amazon Aurora'] Note: Without filters, all resources are returned with pagination support via next_token.. It is categorised as a Read tool in the AWS Docs and Regions MCP Server, which means it retrieves data without modifying state.
Register the AWS Docs and Regions MCP server in PolicyLayer and add a rule for aws___get_regional_availability: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches AWS Docs and Regions. Nothing to install.
aws___get_regional_availability is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the aws___get_regional_availability rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for aws___get_regional_availability. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
aws___get_regional_availability is provided by the AWS Docs and Regions MCP server (FaresYoussef94/aws-knowledge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 AWS Docs and Regions tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.