cargo-describe-table

THE RISK

Low Risk

Why cargo-describe-table needs a policy

This tool retrieves and returns schema information (field definitions) for a Cargo table. It is a read-only query operation with no side effects—it does not create, modify, delete, or execute code. The blast radius of misuse is minimal, as an attacker could only learn the structure of tables, not access or alter their contents. This is a low-severity information disclosure risk.

From the tool's definition Tool name 'cargo-describe-table' and description 'Returns the field schema for a Cargo table' indicate a retrieval operation that queries metadata about table structure without modifying data.

Documented attack patterns abuse exactly the kind of access cargo-describe-table gives an agent:

POLICY

How to control cargo-describe-table

PolicyLayer is an MCP gateway — it sits between your AI agents and MediaWiki MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for cargo-describe-table:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cargo-describe-table": {}
  }
}

cargo-describe-table 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 MediaWiki MCP Server — 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

Related tools and policies

More MediaWiki MCP Server tools

Destructive delete-page Removes a wiki page from public view and returns the deleted title. This is a soft delete: Destructive neowiki-delete-subject Deletes one NeoWiki Subject by ID from its page. Enabled only when the wiki has NeoWiki in Execute cargo-query Returns rows from one or more Cargo tables on the targeted wiki, matching a SQL-style filt Execute smw-query Runs a Semantic MediaWiki Write undelete-page Restores a previously deleted wiki page, including its full revision history, and returns Write create-page Creates a new wiki page with the provided content and returns the new page Write move-page Renames a wiki page, moving it — and by default its talk page — to a new title, and return Write neowiki-set-main-subject Sets which existing Subject on a wiki page is its Main Subject, or clears it. Enabled only

All 38 MediaWiki MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 cargo-describe-table

What does the cargo-describe-table tool do? +

Returns the field schema for a Cargo table on the targeted wiki: each field. It is categorised as a Read tool in the MediaWiki MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on cargo-describe-table? +

Register the MediaWiki MCP Server MCP server in PolicyLayer and add a rule for cargo-describe-table: 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 MediaWiki MCP Server. Nothing to install.

What risk level is cargo-describe-table? +

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

Can I rate-limit cargo-describe-table? +

Yes. Add a rate_limit block to the cargo-describe-table 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 cargo-describe-table completely? +

Set action: deny in the PolicyLayer policy for cargo-describe-table. 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 cargo-describe-table? +

cargo-describe-table is provided by the MediaWiki MCP Server MCP server (@professional-wiki/mediawiki-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MediaWiki MCP Server tool call.

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

CHECK YOUR STACK →