pwa_add_offline

Add offline support with background sync, IndexedDB storage, and fallback pages (Pro)

SERVERPlugin Hub SOURCE@barnburner121/plugin-hub-mcp

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/barnburner121-plugin-hub-mcp/pwa-add-offline.md

WHAT IT DOES

What pwa_add_offline does on Plugin Hub

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

RISK

Why pwa_add_offline is rated Medium

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

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pwa_add_offline safely

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

pwa_add_offline Rate-limited

pwa_add_offline 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": {
    "pwa_add_offline": {
      "limits": [
        {
          "counter": "pwa_add_offline_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 Plugin Hub, apply this rule, and every pwa_add_offline call is checked against it from then on.

FAQ

Questions about pwa_add_offline

What does the pwa_add_offline tool do? +

Add offline support with background sync, IndexedDB storage, and fallback pages (Pro). It is categorised as a Write tool in the Plugin Hub MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pwa_add_offline? +

Register the Plugin Hub MCP server in PolicyLayer and add a rule for pwa_add_offline: 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 Plugin Hub. Nothing to install.

What risk level is pwa_add_offline? +

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

Can I rate-limit pwa_add_offline? +

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

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

pwa_add_offline is provided by the Plugin Hub MCP server (@barnburner121/plugin-hub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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