set_file_permissions

Set file permissions for specific files

SERVER20i MCP Server SOURCEcbrown35/20i-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/cbrown35-20i-mcp/set-file-permissions.md

WHAT IT DOES

What set_file_permissions does on 20i MCP Server

AI agents use set_file_permissions to create or update resources in 20i MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 20i MCP Server environment.

RISK

Why set_file_permissions is rated Medium

Setting file permissions modifies file attributes and access controls, which is a reversible write operation. While this does not delete data, incorrect permission changes could impact system security and file accessibility. Severity is high due to potential for privilege escalation or lockout of critical files if misused by an AI agent without proper safeguards.

From the tool's definition Tool sets file permissions for specific files; modifies access control attributes on files. The description explicitly states "Set file permissions" indicating a write operation that changes file metadata.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_file_permissions safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 20i MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_file_permissions, this is the rule to start with:

set_file_permissions Rate-limited

set_file_permissions 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": {
    "set_file_permissions": {
      "limits": [
        {
          "counter": "set_file_permissions_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 20i MCP Server, apply this rule, and every set_file_permissions call is checked against it from then on.

FAQ

Questions about set_file_permissions

What does the set_file_permissions tool do? +

Set file permissions for specific files. It is categorised as a Write tool in the 20i MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_file_permissions? +

Register the 20i MCP Server MCP server in PolicyLayer and add a rule for set_file_permissions: 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 20i MCP Server. Nothing to install.

What risk level is set_file_permissions? +

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

Can I rate-limit set_file_permissions? +

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

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

set_file_permissions is provided by the 20i MCP Server MCP server (cbrown35/20i-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on 20i MCP Server, and thousands of servers like it.

This server

All 302 20i MCP Server tools →

Across the catalogue

set-prioity on Kanban MCP Server →team_manager_set_sources on Team Manager MCP →qt_set_property on Qt → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →