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Part of the StacksFinder server.
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AI agents call recommend_stack_demo to retrieve information from StacksFinder 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 recommend_stack_demo 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": {
"recommend_stack_demo": {}
}
}See the full StacksFinder policy for all 26 tools.
These attack patterns abuse exactly the kind of access recommend_stack_demo 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 a complete tech stack recommendation for your project type. Returns the highest-scored technology for each category (frontend, backend, meta-framework, database, ORM, auth, hosting, payments) based on deterministic scoring algorithms. FREE demo with 1 request per day limit. For unlimited access with custom priorities and constraints, upgrade to Pro at stacksfinder.com.. It is categorised as a Read tool in the StacksFinder MCP Server, which means it retrieves data without modifying state.
Register the StacksFinder MCP server in PolicyLayer and add a rule for recommend_stack_demo: 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 StacksFinder. Nothing to install.
recommend_stack_demo 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 recommend_stack_demo 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 recommend_stack_demo. 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.
recommend_stack_demo is provided by the StacksFinder MCP server (hoklims/stacksfinder-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 26 StacksFinder tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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