AI agents call bdns_cercar_concessions 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.
The tool is part of a transparency/corruption investigation server focused on cross-referencing open government data. The 'cercar' (search) prefix indicates a query/retrieval operation with no side effects. Concession searches retrieve public data without modifying, deleting, or executing arbitrary code.
From the tool's definition Tool name 'bdns_cercar_concessions' suggests searching/querying ('cercar' = search in Catalan) concessions data from BDNS (Banco de Datos de Nuevos Servicios, a Spanish public procurement database).
Documented attack patterns abuse exactly the kind of access bdns_cercar_concessions 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 bdns_cercar_concessions:
{
"version": "1",
"default": "deny",
"tools": {
"bdns_cercar_concessions": {}
}
}bdns_cercar_concessions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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bdns_cercar_concessions. 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 bdns_cercar_concessions: 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.
bdns_cercar_concessions 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 bdns_cercar_concessions 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 bdns_cercar_concessions. 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.
bdns_cercar_concessions 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.