Get hot key tracking data from persisted storage. BetterDB periodically scans keys using LFU frequency scores (when maxmemory-policy is an LFU variant) or OBJECT IDLETIME / COMMANDLOG-derived frequency. Each snapshot captures the top keys ranked by access frequency. Use this to find cache-busting...
Part of the Betterdb MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call get_hot_keys to retrieve information from Betterdb 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 get_hot_keys 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.
tools:
get_hot_keys:
rules:
- action: allowSee the full Betterdb policy for all 27 tools.
Agents calling read-class tools like get_hot_keys have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Get hot key tracking data from persisted storage. BetterDB periodically scans keys using LFU frequency scores (when maxmemory-policy is an LFU variant) or OBJECT IDLETIME / COMMANDLOG-derived frequency. Each snapshot captures the top keys ranked by access frequency. Use this to find cache-busting keys, uneven access patterns, or keys that dominate throughput. The signalType field in each entry indicates which detection mode was active (lfu or idletime).. It is categorised as a Read tool in the Betterdb MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for get_hot_keys. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Betterdb MCP server.
get_hot_keys 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 get_hot_keys rule in your Intercept 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 Intercept policy for get_hot_keys. 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.
get_hot_keys is provided by the Betterdb MCP server (@betterdb/mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept