Low Risk

analyze_schema_usage

Analyze how database tables are used in the codebase

Part of the Code Auditor server.

analyze_schema_usage is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call analyze_schema_usage to retrieve information from Code Auditor without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though analyze_schema_usage only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "analyze_schema_usage": {}
  }
}

See the full Code Auditor policy for all 38 tools.

Get this rule live on your own Code Auditor server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access analyze_schema_usage gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so analyze_schema_usage only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the analyze_schema_usage tool do? +

Analyze how database tables are used in the codebase. It is categorised as a Read tool in the Code Auditor MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on analyze_schema_usage? +

Register the Code Auditor MCP server in PolicyLayer and add a rule for analyze_schema_usage: 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 Code Auditor. Nothing to install.

What risk level is analyze_schema_usage? +

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

Can I rate-limit analyze_schema_usage? +

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

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

analyze_schema_usage is provided by the Code Auditor MCP server (code-auditor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Code Auditor tool call.

Deterministic rules across all 38 Code Auditor tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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