bitmap_get

Get the bit value at offset. Args: key: The name of the bitmap key offset: The bit offset (0-based) Returns: Bit value or error message

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/bitmap-get.md

WHAT IT DOES

What bitmap_get does on AWS

AI agents call bitmap_get 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 bitmap_get is rated Low

The tool performs a read-only query on a bitmap data structure, retrieving a single bit value at a specified offset. There is no modification, deletion, execution, or financial impact. The operation is a simple data retrieval with minimal blast radius.

From the tool's definition Tool description states 'Get the bit value at offset' with args for key and offset, and Returns 'Bit value or error message'. This is a retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs bitmap_get 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 bitmap_get, this is the rule to start with:

bitmap_get Allowed

bitmap_get 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": {
    "bitmap_get": {}
  }
}

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 bitmap_get call is checked against it from then on.

FAQ

Questions about bitmap_get

What does the bitmap_get tool do? +

Get the bit value at offset. Args: key: The name of the bitmap key offset: The bit offset (0-based) Returns: Bit value or error message. 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 bitmap_get? +

Register the AWS MCP server in PolicyLayer and add a rule for bitmap_get: 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 bitmap_get? +

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

Can I rate-limit bitmap_get? +

Yes. Add a rate_limit block to the bitmap_get 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 bitmap_get completely? +

Set action: deny in the PolicyLayer policy for bitmap_get. 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 bitmap_get? +

bitmap_get 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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