Low Risk

get_law_versions

Renvoie toutes les versions historiques d'un article de loi, du plus ancien au plus récent. Utile pour construire une "timeline" de l'article et comprendre son évolution (ex : un article modifié en 1964, 1994, 2016 aura 3-4 lignes avec date_debut, date_fin, etat, texte distincts). Args: code: cod...

Risk signalsAccepts freeform code/query input (code)

Part of the Justicelibre server.

get_law_versions is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call get_law_versions to retrieve information from Justicelibre 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_law_versions 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.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_law_versions": {}
  }
}

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Get this rule live on your own Justicelibre server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access get_law_versions gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so get_law_versions only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the get_law_versions tool do? +

Renvoie toutes les versions historiques d'un article de loi, du plus ancien au plus récent. Utile pour construire une "timeline" de l'article et comprendre son évolution (ex : un article modifié en 1964, 1994, 2016 aura 3-4 lignes avec date_debut, date_fin, etat, texte distincts). Args: code: code court (voir get_law_article pour la liste des 22 codes) num: numéro de l'article Returns: dict avec code, code_long, num, count, versions (liste ordonnée par date_debut ascendante).. It is categorised as a Read tool in the Justicelibre MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_law_versions? +

Register the Justicelibre MCP server in PolicyLayer and add a rule for get_law_versions: 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 Justicelibre. Nothing to install.

What risk level is get_law_versions? +

get_law_versions is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_law_versions? +

Yes. Add a rate_limit block to the get_law_versions 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.

How do I block get_law_versions completely? +

Set action: deny in the PolicyLayer policy for get_law_versions. 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.

What MCP server provides get_law_versions? +

get_law_versions is provided by the Justicelibre MCP server (https://justicelibre.org/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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