strings_create_key · Phrase MCP: Risk & Policy

WHAT IT DOES

What strings_create_key does on Phrase

AI agents use strings_create_key to create or update resources in Phrase — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Phrase environment.

WHY IT NEEDS A POLICY

Why strings_create_key needs a policy

The tool creates new translation keys, which are metadata/content additions to a localization project. This is a Write operation (reversible creation/modification) rather than Read (no data retrieval), Execute (no external code execution), Destructive (not irreversible), Financial (no money movement), or Other.

From the tool's definition Tool name contains 'create' and description states 'Create a new translation key in a Phrase Strings project.' This is a reversible data creation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

strings_create_key Rate-limited

strings_create_key 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": {
    "strings_create_key": {
      "limits": [
        {
          "counter": "strings_create_key_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 Phrase, so you can run agents against it safely.

FAQ

Questions about strings_create_key

What does the strings_create_key tool do? +

Create a new translation key in a Phrase Strings project. It is categorised as a Write tool in the Phrase MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on strings_create_key? +

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

What risk level is strings_create_key? +

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

Can I rate-limit strings_create_key? +

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

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

strings_create_key is provided by the Phrase MCP server (phrase-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.