strings_merge_branch · Phrase MCP: Risk & Policy

WHAT IT DOES

What strings_merge_branch does on Phrase

AI agents use strings_merge_branch 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_merge_branch needs a policy

Merging is a write operation that modifies project data (the main branch) by integrating another branch's changes. While the operation is reversible (can be undone via revert/reset), it materially changes the state of the codebase and affects all dependent systems.

From the tool's definition Tool performs 'Merge an existing branch into the main branch' — this modifies the main branch state by incorporating changes from another branch, a reversible version control operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

strings_merge_branch Rate-limited

strings_merge_branch 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_merge_branch": {
      "limits": [
        {
          "counter": "strings_merge_branch_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_merge_branch

What does the strings_merge_branch tool do? +

Merge an existing branch into the main branch of a Phrase Strings project. Note: Merging may take several minutes depending on diff size. 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_merge_branch? +

Register the Phrase MCP server in PolicyLayer and add a rule for strings_merge_branch: 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_merge_branch? +

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

Can I rate-limit strings_merge_branch? +

Yes. Add a rate_limit block to the strings_merge_branch 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_merge_branch completely? +

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

strings_merge_branch 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.