string_decrement

THE RISK

Low Risk

Why string_decrement needs a policy

The tool appears to perform a simple local integer decrement operation, which does not match any of the primary risk categories. It does not read external data, write/create resources, execute commands, destroy data, or involve financial operations. The tool name and description are incongruent with the Amazon Translate server context, which lowers confidence. A local arithmetic operation has minimal blast radius.

From the tool's definition Tool name 'string_decrement' with description 'Decrement integer value.' — this appears to be a local arithmetic operation with no side effects described

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

POLICY

How to control string_decrement

PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon Translate MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for string_decrement:

policy.json

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

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

Create a free account and register Amazon Translate 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

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
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 →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about string_decrement

What does the string_decrement tool do? +

Decrement integer value. It is categorised as a Other tool in the Amazon Translate MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on string_decrement? +

Register the Amazon Translate MCP Server MCP server in PolicyLayer and add a rule for string_decrement: 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 Amazon Translate MCP Server. Nothing to install.

What risk level is string_decrement? +

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

Can I rate-limit string_decrement? +

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

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

string_decrement is provided by the Amazon Translate MCP Server MCP server (awslabs.amazon-translate-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 Amazon Translate MCP Server tool call.

Start from Amazon Translate 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 →