bitmap_pos

THE RISK

Low Risk

Why bitmap_pos needs a policy

The tool name 'bitmap_pos' does not clearly indicate any read, write, execute, destructive, or financial operation. The description is empty, providing no additional context. In the context of AWS Step Functions, this could relate to some internal bitmap position operation, but there is insufficient information to classify it meaningfully. Confidence is very low due to lack of description.

From the tool's definition Tool name is 'bitmap_pos' and description is empty or uninformative.

Documented attack patterns abuse exactly the kind of access bitmap_pos gives an agent:

POLICY

How to control bitmap_pos

PolicyLayer is an MCP gateway — it sits between your AI agents and AWS Step Functions Tool MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for bitmap_pos:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "bitmap_pos": {
      "limits": [
        {
          "counter": "bitmap_pos_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

bitmap_pos gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register AWS Step Functions Tool MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about bitmap_pos

What does the bitmap_pos tool do? +

bitmap_pos. It is categorised as a Other tool in the AWS Step Functions Tool MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on bitmap_pos? +

Register the AWS Step Functions Tool MCP Server MCP server in PolicyLayer and add a rule for bitmap_pos: 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 Step Functions Tool MCP Server. Nothing to install.

What risk level is bitmap_pos? +

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

Can I rate-limit bitmap_pos? +

Yes. Add a rate_limit block to the bitmap_pos 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_pos completely? +

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

bitmap_pos is provided by the AWS Step Functions Tool MCP Server MCP server (awslabs.stepfunctions-tool-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every AWS Step Functions Tool MCP Server tool call.

Start from AWS Step Functions Tool MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →