harmony_sandbox_push

Upload a file into 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-push.md

WHAT IT DOES

What harmony_sandbox_push does on Claude Mobile

AI agents use harmony_sandbox_push 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_push is rated Medium

Tool writes files into a running app's sandbox, modifying app state irreversibly if files contain code or sensitive data.

From the tool's definition Upload a file into a running debug-signed HarmonyOS application

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs harmony_sandbox_push 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_push, this is the rule to start with:

harmony_sandbox_push Rate-limited

harmony_sandbox_push 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_push": {
      "limits": [
        {
          "counter": "harmony_sandbox_push_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_push call is checked against it from then on.

FAQ

Questions about harmony_sandbox_push

What does the harmony_sandbox_push tool do? +

Upload a file into 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_push? +

Register the Claude Mobile MCP server in PolicyLayer and add a rule for harmony_sandbox_push: 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_push? +

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

Can I rate-limit harmony_sandbox_push? +

Yes. Add a rate_limit block to the harmony_sandbox_push 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_push completely? +

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

harmony_sandbox_push 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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