Guide de la taxe foncière : calcul (valeur locative cadastrale × 50% × taux communes),
AI agents call guide_taxe_fonciere 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 tool retrieves or computes tax information based on input parameters (cadastral value, municipal rate) and returns calculated results. It does not create, modify, delete, or execute external operations. It is a read-only analytical tool that assists users in understanding and calculating French property tax obligations. No reversible or irreversible data modifications occur.
From the tool's definition Tool name 'guide_taxe_fonciere' and description indicate it provides guidance and performs calculation of property tax based on the formula: cadastral rental value × 50% × municipal rate.
Documented attack patterns abuse exactly the kind of access guide_taxe_fonciere 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 guide_taxe_fonciere:
{
"version": "1",
"default": "deny",
"tools": {
"guide_taxe_fonciere": {}
}
}guide_taxe_fonciere is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Guide de la taxe foncière : calcul (valeur locative cadastrale × 50% × taux communes),. 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 guide_taxe_fonciere: 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.
guide_taxe_fonciere 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 guide_taxe_fonciere 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 guide_taxe_fonciere. 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.
guide_taxe_fonciere 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.