AI agents call get_clients to retrieve information from Qonto MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves client information from a financial system without creating, modifying, or deleting data. However, it operates on sensitive financial and business data (client lists from a business banking platform), which elevates severity from 'low' to 'medium' due to potential privacy/business intelligence exposure if accessed by an unauthorized agent.
From the tool's definition Tool name 'get_clients' and description 'Get all clients from Qonto API' indicate data retrieval with no modification. Sibling tools like 'get_client', 'get_qonto_transaction', 'get_qonto_organization' confirm this server provides Read-only access patterns.
Documented attack patterns abuse exactly the kind of access get_clients gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Qonto MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_clients:
{
"version": "1",
"default": "deny",
"tools": {
"get_clients": {}
}
}get_clients is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all clients from Qonto API. It is categorised as a Read tool in the Qonto MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Qonto MCP Server MCP server in PolicyLayer and add a rule for get_clients: 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 Qonto MCP Server. Nothing to install.
get_clients 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 get_clients 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 get_clients. 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.
get_clients is provided by the Qonto MCP Server MCP server (qonto/qonto-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 Qonto MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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21 Qonto MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.