Get random sample documents from a collection using $sample. Use this after reviewing schema metadata when you need raw document examples.
AI agents call sample-documents to retrieve information from Askdb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves example documents for inspection purposes. It does not create, modify, delete, or execute code. Although the server bridges databases, this particular tool is explicitly limited to sampling and reading data. The sandbox isolation and field-level control mentioned in the server description further mitigate risk.
From the tool's definition Tool description states 'Get random sample documents from a collection' — a retrieval operation with no modification or side effects. The use of MongoDB's $sample operator confirms this is a query-only action.
Documented attack patterns abuse exactly the kind of access sample-documents gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Askdb, and nothing reaches the server without passing your rules. This is the rule we recommend for sample-documents:
{
"version": "1",
"default": "deny",
"tools": {
"sample-documents": {}
}
}sample-documents is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get random sample documents from a collection using $sample. Use this after reviewing schema metadata when you need raw document examples. It is categorised as a Read tool in the Askdb MCP Server, which means it retrieves data without modifying state.
Register the Askdb MCP server in PolicyLayer and add a rule for sample-documents: 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 Askdb. Nothing to install.
sample-documents is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sample-documents 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.
Set action: deny in the PolicyLayer policy for sample-documents. 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.
sample-documents is provided by the Askdb MCP server (mgorabbani/askdb). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Askdb, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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10 Askdb tools catalogued and risk-classified — across an index of 43,000+ MCP servers.