AI agents call cache_quit as a supporting operation in AWS DocumentDB MCP Server workflows.
This tool closes a cache connection, which is a connection management operation. It does not read, write, execute code, destroy data, or move money. Closing a connection is reversible (a new connection can be opened) and has no data side effects, making it fall into the 'Other' category. Severity is low as misuse would at most disrupt cache connectivity temporarily.
From the tool's definition Close the connection to the cache server
Documented attack patterns abuse exactly the kind of access cache_quit gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AWS DocumentDB MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for cache_quit:
{
"version": "1",
"default": "deny",
"tools": {
"cache_quit": {
"limits": [
{
"counter": "cache_quit_rate",
"window": "minute",
"max": 60,
"scope": "grant"
}
]
}
}
}cache_quit gets a rate cap, and everything else on the server is denied unless you say otherwise.
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Close the connection to the cache server. It is categorised as a Other tool in the AWS DocumentDB MCP Server MCP Server, which means it performs auxiliary operations.
Register the AWS DocumentDB MCP Server MCP server in PolicyLayer and add a rule for cache_quit: 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 AWS DocumentDB MCP Server. Nothing to install.
cache_quit is a Other tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the cache_quit 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 cache_quit. 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.
cache_quit is provided by the AWS DocumentDB MCP Server MCP server (awslabs.documentdb-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from AWS DocumentDB MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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805 AWS DocumentDB MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.