s3_object_get

THE RISK

Low Risk

Why s3_object_get needs a policy

This tool retrieves data from S3 storage without creating, modifying, deleting, or executing anything. It is a straightforward read operation that queries and returns object data. The restriction on binary/large objects further confirms it is designed for safe data inspection rather than side effects.

From the tool's definition Tool description states 'Download an object (text)' and returns 'metadata only' for binary or oversized objects. The verb 'download' combined with read-only retrieval of S3 objects indicates data retrieval without modification.

Documented attack patterns abuse exactly the kind of access s3_object_get gives an agent:

POLICY

How to control s3_object_get

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_object_get:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "s3_object_get": {}
  }
}

s3_object_get 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_object_get

What does the s3_object_get tool do? +

Download an object (text). Binary or >max_bytes objects return metadata only. 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_object_get? +

Register the Odoo Claude MCP server in PolicyLayer and add a rule for s3_object_get: 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_object_get? +

s3_object_get is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit s3_object_get? +

Yes. Add a rate_limit block to the s3_object_get 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_object_get completely? +

Set action: deny in the PolicyLayer policy for s3_object_get. 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_object_get? +

s3_object_get 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 →