Calcule la fiscalité des cryptomonnaies selon la méthode officielle 2086 (FIFO/PAMC).
AI agents call calculer_fiscalite_crypto 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 computational/analytical tool that derives tax figures based on input parameters and official French tax rules. It retrieves or calculates information without creating, modifying, deleting, or executing any irreversible actions. The output is informational (tax calculation results) that a user can review but which does not automatically commit to any financial obligation or system change.
From the tool's definition Tool performs calculation ('Calcule') of cryptocurrency tax using official method 2086 (FIFO/PAMC). No modification of data, no deletion, no execution of external code, and no financial transactions. It reads input data and returns computed tax information.
Documented attack patterns abuse exactly the kind of access calculer_fiscalite_crypto 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 calculer_fiscalite_crypto:
{
"version": "1",
"default": "deny",
"tools": {
"calculer_fiscalite_crypto": {}
}
}calculer_fiscalite_crypto 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.
Calcule la fiscalité des cryptomonnaies selon la méthode officielle 2086 (FIFO/PAMC). 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 calculer_fiscalite_crypto: 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.
calculer_fiscalite_crypto 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 calculer_fiscalite_crypto 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 calculer_fiscalite_crypto. 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.
calculer_fiscalite_crypto 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.
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