bazel_macos_install

Copy a Bazel-built macOS .app into /Applications or a custom directory.

SERVERXcodeBazelMCP SOURCExcodebazelmcp/xcodebazelmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/xcodebazelmcp-xcodebazelmcp/bazel-macos-install.md

WHAT IT DOES

What bazel_macos_install does on XcodeBazelMCP

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

RISK

Why bazel_macos_install is rated Medium

This tool creates or modifies files on disk by copying applications into /Applications or custom directories. While not destructive (files can be uninstalled), it irreversibly changes system state by installing software that may affect other applications, security posture, or system behavior.

From the tool's definition Tool description states it will 'Copy a Bazel-built macOS .app into /Applications or a custom directory' — this modifies the filesystem by creating or updating application files in system-managed locations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs bazel_macos_install safely

PolicyLayer is an MCP gateway: it sits between your AI agents and XcodeBazelMCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For bazel_macos_install, this is the rule to start with:

bazel_macos_install Rate-limited

bazel_macos_install 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": {
    "bazel_macos_install": {
      "limits": [
        {
          "counter": "bazel_macos_install_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect XcodeBazelMCP, apply this rule, and every bazel_macos_install call is checked against it from then on.

FAQ

Questions about bazel_macos_install

What does the bazel_macos_install tool do? +

Copy a Bazel-built macOS .app into /Applications or a custom directory. It is categorised as a Write tool in the XcodeBazelMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on bazel_macos_install? +

Register the XcodeBazel MCP server in PolicyLayer and add a rule for bazel_macos_install: 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 XcodeBazelMCP. Nothing to install.

What risk level is bazel_macos_install? +

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

Can I rate-limit bazel_macos_install? +

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

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

bazel_macos_install is provided by the XcodeBazel MCP server (xcodebazelmcp/xcodebazelmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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