Get the most popular businesses in an area, ranked by real user click-through data. Use to find top-rated businesses by category.
Part of the discava – Business Directory for AI server.
Free to start. No card required.
AI agents call get_rankings to retrieve information from discava – Business Directory for AI 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_rankings 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.
{
"version": "1",
"default": "deny",
"tools": {
"get_rankings": {}
}
}See the full discava – Business Directory for AI policy for all 6 tools.
These attack patterns abuse exactly the kind of access get_rankings gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Get the most popular businesses in an area, ranked by real user click-through data. Use to find top-rated businesses by category.. It is categorised as a Read tool in the discava – Business Directory for AI MCP Server, which means it retrieves data without modifying state.
Register the discava – Business Directory for AI MCP server in PolicyLayer and add a rule for get_rankings: 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 discava – Business Directory for AI. Nothing to install.
get_rankings 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_rankings 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 get_rankings. 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_rankings is provided by the discava – Business Directory for AI MCP server (discava/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 discava – Business Directory for AI tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.