browser_storage_set

Set a value in localStorage or sessionStorage.

SERVERTermux Browser Pilot SOURCEsalviz/termux-browser-pilot

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/salviz-termux-browser-pilot/browser-storage-set.md

WHAT IT DOES

What browser_storage_set does on Termux Browser Pilot

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

RISK

Why browser_storage_set is rated Medium

This tool writes data to browser storage, which is reversible (can be overwritten or cleared). It does not execute arbitrary code, delete data, move money, or trigger external operations with uncontrolled side effects.

From the tool's definition Tool description states 'Set a value in localStorage or sessionStorage' — this creates or modifies data in browser storage without deletion.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs browser_storage_set safely

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

browser_storage_set Rate-limited

browser_storage_set 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": {
    "browser_storage_set": {
      "limits": [
        {
          "counter": "browser_storage_set_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 Termux Browser Pilot, apply this rule, and every browser_storage_set call is checked against it from then on.

FAQ

Questions about browser_storage_set

What does the browser_storage_set tool do? +

Set a value in localStorage or sessionStorage. It is categorised as a Write tool in the Termux Browser Pilot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on browser_storage_set? +

Register the Termux Browser Pilot MCP server in PolicyLayer and add a rule for browser_storage_set: 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 Termux Browser Pilot. Nothing to install.

What risk level is browser_storage_set? +

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

Can I rate-limit browser_storage_set? +

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

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

browser_storage_set is provided by the Termux Browser Pilot MCP server (salviz/termux-browser-pilot). 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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