Population d'une COMMUNE (code INSEE 5 car.), d'un DÉPARTEMENT (2-3 car.) OU d'un IRIS infracommunal (9 car.) — granularité auto-détectée par la longueur du code. Retourne un LookupResult discriminé par found. - IRIS (9 car., ex 751103701 = commune 75110 + IRIS 3701) : population totale du quarti...
Risk signalsAccepts freeform code/query input (code)
Part of the France Data Mcp server.
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AI agents call population to retrieve information from France Data Mcp 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 population 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": {
"population": {}
}
}See the full France Data Mcp policy for all 36 tools.
These attack patterns abuse exactly the kind of access population 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.
Population d'une COMMUNE (code INSEE 5 car.), d'un DÉPARTEMENT (2-3 car.) OU d'un IRIS infracommunal (9 car.) — granularité auto-détectée par la longueur du code. Retourne un LookupResult discriminé par found. - IRIS (9 car., ex 751103701 = commune 75110 + IRIS 3701) : population totale du quartier au Recensement 2022 (champ population, comptes bruts), + libelle, code_commune, type_iris (H/A/D/Z). Source : INSEE RP 2022 (table ingérée, géo 01/01/2024). Maille la plus fine (quartier) pour les villes ; en zone peu dense la commune = 1 IRIS (type_iris Z, code COM+0000). Pour le profil démographique détaillé d'un îlot ou d'un bassin (âge, CSP, familles, revenu), utiliser profil_iris. - Commune (5 car., ex 75056 Paris, 13055 Marseille, 2A004 Ajaccio) : PMUN/PCAP/PTOT. Source INSEE Melodi (DS_POPULATIONS_REFERENCE). PMUN = base légale DREES. Commune fusionnée → found: false + orientation autocomplete_commune. INSEE n'expose PAS les arrondissements PLM (75101-75120, 13201-13216, 69381-69389) → passer la commune-mère ou le département. - Département (2-3 car., ex 75, 59, 2A, 971) : Mayotte (976) ABSENTE de Melodi → lookupNotFound. Alias acceptés : code_insee/codeInsee/insee, code_dept/dept/departement/code_departement, code_iris/iris → code.. It is categorised as a Read tool in the France Data Mcp MCP Server, which means it retrieves data without modifying state.
Register the France Data MCP server in PolicyLayer and add a rule for population: 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 France Data Mcp. Nothing to install.
population 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 population 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 population. 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.
population is provided by the France Data MCP server (france-data-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 36 France Data Mcp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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