Compare le regime micro-foncier (abattement forfaitaire 30%) et le regime reel
AI agents call simuler_micro_foncier to retrieve information from Impots without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a tax calculation and comparison tool that performs read-only analysis of two French rental property tax regimes. It retrieves or computes information to present scenarios to the user, with no side effects, data modification, code execution, or financial commitments. It is analogous to other sibling tools on this server (calculer_*) which are computational read operations for tax planning.
From the tool's definition Tool name and description: 'simuler_micro_foncier' - 'Compare le regime micro-foncier (abattement forfaitaire 30%) et le regime reel'.
Documented attack patterns abuse exactly the kind of access simuler_micro_foncier gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Impots, and nothing reaches the server without passing your rules. This is the rule we recommend for simuler_micro_foncier:
{
"version": "1",
"default": "deny",
"tools": {
"simuler_micro_foncier": {}
}
}simuler_micro_foncier is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Compare le regime micro-foncier (abattement forfaitaire 30%) et le regime reel. It is categorised as a Read tool in the Impots MCP Server, which means it retrieves data without modifying state.
Register the Impots MCP server in PolicyLayer and add a rule for simuler_micro_foncier: 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 Impots. Nothing to install.
simuler_micro_foncier 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 simuler_micro_foncier 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 simuler_micro_foncier. 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.
simuler_micro_foncier is provided by the Impots MCP server (w4zu/impots-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Impots, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
62 Impots tools catalogued and risk-classified — across an index of 43,000+ MCP servers.