arvan_s3_sync_local_dir

Upload all files under a local directory to a bucket (recursive).

SERVERArvanCloud MCP Server SOURCEdwin-gharibi/arvancloud-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/dwin-gharibi-arvancloud-mcp/arvan-s3-sync-local-dir.md

WHAT IT DOES

What arvan_s3_sync_local_dir does on ArvanCloud MCP Server

AI agents use arvan_s3_sync_local_dir to create or update resources in ArvanCloud MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ArvanCloud MCP Server environment.

RISK

Why arvan_s3_sync_local_dir is rated Medium

This tool performs a recursive upload operation that creates or modifies objects in an S3 bucket. While reversible (files can be deleted later), the scale and recursive nature pose significant risk: an agent could inadvertently upload sensitive local data, overwrite production bucket contents, or flood storage with large files.

From the tool's definition Tool description states 'Upload all files under a local directory to a bucket (recursive)' — this creates/modifies data in cloud storage without deletion of existing data.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs arvan_s3_sync_local_dir safely

PolicyLayer is an MCP gateway: it sits between your AI agents and ArvanCloud MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For arvan_s3_sync_local_dir, this is the rule to start with:

arvan_s3_sync_local_dir Rate-limited

arvan_s3_sync_local_dir 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": {
    "arvan_s3_sync_local_dir": {
      "limits": [
        {
          "counter": "arvan_s3_sync_local_dir_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 ArvanCloud MCP Server, apply this rule, and every arvan_s3_sync_local_dir call is checked against it from then on.

FAQ

Questions about arvan_s3_sync_local_dir

What does the arvan_s3_sync_local_dir tool do? +

Upload all files under a local directory to a bucket (recursive). It is categorised as a Write tool in the ArvanCloud 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 arvan_s3_sync_local_dir? +

Register the ArvanCloud MCP Server MCP server in PolicyLayer and add a rule for arvan_s3_sync_local_dir: 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 ArvanCloud MCP Server. Nothing to install.

What risk level is arvan_s3_sync_local_dir? +

arvan_s3_sync_local_dir is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit arvan_s3_sync_local_dir? +

Yes. Add a rate_limit block to the arvan_s3_sync_local_dir 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 arvan_s3_sync_local_dir completely? +

Set action: deny in the PolicyLayer policy for arvan_s3_sync_local_dir. 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 arvan_s3_sync_local_dir? +

arvan_s3_sync_local_dir is provided by the ArvanCloud MCP Server MCP server (dwin-gharibi/arvancloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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