Run a MongoDB aggregation pipeline on a collection via /o/db. Requires the dbviewer plugin. For simple find queries use databases_query.
Part of the Countly MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke collections_aggregate to trigger processes or run actions in Countly. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
collections_aggregate can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
tools:
collections_aggregate:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Countly policy for all 127 tools.
Agents calling execute-class tools like collections_aggregate have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
collections_aggregate is one of the high-risk operations in Countly. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
Run a MongoDB aggregation pipeline on a collection via /o/db. Requires the dbviewer plugin. For simple find queries use databases_query.. It is categorised as a Execute tool in the Countly MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for collections_aggregate. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Countly MCP server.
collections_aggregate is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the collections_aggregate 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 collections_aggregate. 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.
collections_aggregate is provided by the Countly MCP server (countly-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.