harmony_sandbox_pull

Download a file from a running debug-signed HarmonyOS application

SERVERClaude Mobile SOURCEalexgladkov/claude-in-mobile

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/alexgladkov-claude-in-mobile/harmony-sandbox-pull.md

WHAT IT DOES

What harmony_sandbox_pull does on Claude Mobile

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

RISK

Why harmony_sandbox_pull is rated Medium

An AI agent can call harmony_sandbox_pull faster than any human can review: one bad instruction and it creates or modifies resources in Claude Mobile by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs harmony_sandbox_pull safely

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

harmony_sandbox_pull Rate-limited

harmony_sandbox_pull 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": {
    "harmony_sandbox_pull": {
      "limits": [
        {
          "counter": "harmony_sandbox_pull_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 Claude Mobile, apply this rule, and every harmony_sandbox_pull call is checked against it from then on.

FAQ

Questions about harmony_sandbox_pull

What does the harmony_sandbox_pull tool do? +

Download a file from a running debug-signed HarmonyOS application. It is categorised as a Write tool in the Claude Mobile MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on harmony_sandbox_pull? +

Register the Claude Mobile MCP server in PolicyLayer and add a rule for harmony_sandbox_pull: 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 Claude Mobile. Nothing to install.

What risk level is harmony_sandbox_pull? +

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

Can I rate-limit harmony_sandbox_pull? +

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

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

harmony_sandbox_pull is provided by the Claude Mobile MCP server (alexgladkov/claude-in-mobile). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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