manage_storage_policies

A write tool on the Supabase MCP Server - Self-Hosted Edition MCP server.

SERVERSupabase MCP Server - Self-Hosted Edition SOURCEabdqum/supabase-mcp-selfhosted

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/abdqum-supabase-mcp-selfhosted/manage-storage-policies.md

WHAT IT DOES

What manage_storage_policies does on Supabase MCP Server - Self-Hosted Edition

AI agents use manage_storage_policies to create or update resources in Supabase MCP Server - Self-Hosted Edition, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Supabase MCP Server - Self-Hosted Edition environment.

RISK

Why manage_storage_policies is rated Medium

Storage policies control access to stored files and data objects. Modifying these policies is a Write operation that can reversibly change data access rules and permissions. However, the description is empty, which reduces confidence. The high severity reflects that misconfigured storage policies in a database/storage platform could expose sensitive data or lock out legitimate users.

From the tool's definition Tool name 'manage_storage_policies' indicates modification of storage access control policies. Sibling tools on the Supabase MCP server include 'apply_migration', 'backup_database', and 'audit_security', suggesting this tool operates in a high-privilege…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs manage_storage_policies safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Supabase MCP Server - Self-Hosted Edition, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For manage_storage_policies, this is the rule to start with:

manage_storage_policies Rate-limited

manage_storage_policies 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": {
    "manage_storage_policies": {
      "limits": [
        {
          "counter": "manage_storage_policies_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 Supabase MCP Server - Self-Hosted Edition, apply this rule, and every manage_storage_policies call is checked against it from then on.

FAQ

Questions about manage_storage_policies

What does the manage_storage_policies tool do? +

manage_storage_policies is a write tool on the Supabase MCP Server - Self-Hosted Edition MCP server. It is categorised as a Write tool in the Supabase MCP Server - Self-Hosted Edition MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on manage_storage_policies? +

Register the Supabase MCP Server - Self-Hosted Edition MCP server in PolicyLayer and add a rule for manage_storage_policies: 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 Supabase MCP Server - Self-Hosted Edition. Nothing to install.

What risk level is manage_storage_policies? +

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

Can I rate-limit manage_storage_policies? +

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

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

manage_storage_policies is provided by the Supabase MCP Server - Self-Hosted Edition MCP server (abdqum/supabase-mcp-selfhosted). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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