adb_shell

Run a shell command on the device and return its output.

SERVERYa Frida SOURCE1shin-7/ya-frida-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/1shin-7-ya-frida-mcp/adb-shell.md

WHAT IT DOES

What adb_shell does on Ya Frida

AI agents invoke adb_shell to trigger actions in Ya Frida. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why adb_shell is rated High

This tool executes arbitrary shell commands on a connected Android device. While not inherently destructive, shell commands can perform any operation the device permits—reading sensitive data, modifying system state, installing malware, or triggering destructive actions. The blast radius depends entirely on command arguments and device permissions.

From the tool's definition Tool description states 'Run a shell command on the device and return its output.' The word 'Run' combined with 'shell command' indicates arbitrary code execution capability.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs adb_shell safely

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

adb_shell Rate-limited

adb_shell stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "adb_shell": {
      "limits": [
        {
          "counter": "adb_shell_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about adb_shell

What does the adb_shell tool do? +

Run a shell command on the device and return its output. It is categorised as a Execute tool in the Ya Frida MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on adb_shell? +

Register the Ya Frida MCP server in PolicyLayer and add a rule for adb_shell: 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 Ya Frida. Nothing to install.

What risk level is adb_shell? +

adb_shell is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit adb_shell? +

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

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

adb_shell is provided by the Ya Frida MCP server (1shin-7/ya-frida-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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