list_table_buckets

List all S3 table buckets for your AWS account. Permissions: You must have the s3tables:ListTableBuckets permission to use this operation.

SERVERAWS SOURCE@awslabs/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity verified Pull the record →

This record as markdown: /tools/aws/list-table-buckets.md

WHAT IT DOES

What list_table_buckets does on AWS

AI agents call list_table_buckets to retrieve information from AWS without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_table_buckets is rated Low

This tool performs a read-only enumeration of S3 table buckets for the AWS account. It requires only the s3tables:ListTableBuckets permission, which is a read permission. There is no data modification, deletion, code execution, or financial impact. The blast radius of misuse is limited to information disclosure about bucket inventory.

From the tool's definition Tool name 'list_table_buckets' with verb 'List' and description states 'List all S3 table buckets' — a query operation that retrieves metadata without modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_table_buckets safely

PolicyLayer is an MCP gateway: it sits between your AI agents and AWS, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_table_buckets, this is the rule to start with:

list_table_buckets Allowed

list_table_buckets is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_table_buckets": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect AWS, apply this rule, and every list_table_buckets call is checked against it from then on.

FAQ

Questions about list_table_buckets

What does the list_table_buckets tool do? +

List all S3 table buckets for your AWS account. Permissions: You must have the s3tables:ListTableBuckets permission to use this operation. It is categorised as a Read tool in the AWS MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_table_buckets? +

Register the AWS MCP server in PolicyLayer and add a rule for list_table_buckets: 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. Nothing to install.

What risk level is list_table_buckets? +

list_table_buckets is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_table_buckets? +

Yes. Add a rate_limit block to the list_table_buckets 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.

How do I block list_table_buckets completely? +

Set action: deny in the PolicyLayer policy for list_table_buckets. 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.

What MCP server provides list_table_buckets? +

list_table_buckets is provided by the AWS MCP server (@awslabs/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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