AI agents call bde_serie to retrieve information from Mcp Govern without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves the most recent values from Bank of Spain financial series. It is a read-only operation that accesses public financial data with no side effects, no data modification, no code execution, and no destructive or financial transaction capability. The blast radius of misuse is minimal—an agent could only retrieve already-public financial information.
From the tool's definition Tool name 'bde_serie' and description 'Obté l'últim valor de sèries financeres del Banc d'Espanya' (Gets the latest value of financial series from the Bank of Spain) indicates retrieval of public financial data without modification or execution of commands.
Documented attack patterns abuse exactly the kind of access bde_serie gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Govern, and nothing reaches the server without passing your rules. This is the rule we recommend for bde_serie:
{
"version": "1",
"default": "deny",
"tools": {
"bde_serie": {}
}
}bde_serie is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Obté l'últim valor de sèries financeres del Banc d'Espanya. It is categorised as a Read tool in the Mcp Govern MCP Server, which means it retrieves data without modifying state.
Register the Mcp Govern MCP server in PolicyLayer and add a rule for bde_serie: 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 Mcp Govern. Nothing to install.
bde_serie 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 bde_serie 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 bde_serie. 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.
bde_serie is provided by the Mcp Govern MCP server (xavimf87/mcp-govern). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Govern, 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.
49 Mcp Govern tools catalogued and risk-classified — across an index of 43,000+ MCP servers.