s3_bucket_stats

THE RISK

Low Risk

Why s3_bucket_stats needs a policy

This tool queries S3 bucket metadata and statistics without altering, deleting, or executing any operations. It has minimal blast radius—an AI agent misuse would only expose information about S3 storage, not compromise data or trigger unintended actions. Classified as Read with low severity.

From the tool's definition Tool description states it 'Return[s] object_count + total_bytes + oldest/newest object key for a bucket' — purely informational queries with no modification, deletion, or execution.

Documented attack patterns abuse exactly the kind of access s3_bucket_stats gives an agent:

POLICY

How to control s3_bucket_stats

PolicyLayer is an MCP gateway — it sits between your AI agents and Odoo Claude MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for s3_bucket_stats:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "s3_bucket_stats": {}
  }
}

s3_bucket_stats is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Odoo Claude MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about s3_bucket_stats

What does the s3_bucket_stats tool do? +

Return object_count + total_bytes + oldest/newest object key for a bucket. It is categorised as a Read tool in the Odoo Claude MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on s3_bucket_stats? +

Register the Odoo Claude MCP server in PolicyLayer and add a rule for s3_bucket_stats: 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 Odoo Claude MCP. Nothing to install.

What risk level is s3_bucket_stats? +

s3_bucket_stats is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit s3_bucket_stats? +

Yes. Add a rate_limit block to the s3_bucket_stats 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 s3_bucket_stats completely? +

Set action: deny in the PolicyLayer policy for s3_bucket_stats. 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 s3_bucket_stats? +

s3_bucket_stats is provided by the Odoo Claude MCP server (rosenvladimirov/odoo-claude-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Odoo Claude MCP tool call.

Start from Odoo Claude MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →