json_toggle · AWS Step Functions Tool MCP Server MCP

WHAT IT DOES

What json_toggle does on AWS Step Functions Tool MCP Server

AI agents use json_toggle to create or update resources in AWS Step Functions Tool MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AWS Step Functions Tool MCP Server environment.

WHY IT NEEDS A POLICY

Why json_toggle needs a policy

The tool modifies a boolean value at a specified path, which is a reversible data modification (Write). It doesn't delete or execute code, just flips a boolean. Severity is low as toggling a boolean is a minimal change, though the impact depends on which configuration is being toggled.

From the tool's definition Toggle boolean value at path

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

json_toggle Rate-limited

json_toggle stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "json_toggle": {
      "limits": [
        {
          "counter": "json_toggle_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches AWS Step Functions Tool MCP Server, so you can run agents against it safely.

FAQ

Questions about json_toggle

What does the json_toggle tool do? +

Toggle boolean value at path. It is categorised as a Write tool in the AWS Step Functions Tool MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on json_toggle? +

Register the AWS Step Functions Tool MCP Server MCP server in PolicyLayer and add a rule for json_toggle: 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 json_toggle? +

json_toggle is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit json_toggle? +

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

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

json_toggle 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.