AI agents call detall_subvencio 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 appears to retrieve detailed information about subsidies from public government sources. This is a read-only operation that queries existing transparency data without creating, modifying, or deleting records. Subsidy details are public data intended for transparency investigations. Low severity because misuse results in information exposure only, not system compromise or irreversible changes.
From the tool's definition Tool name 'detall_subvencio' (detail subsidy) and sibling tools like 'bcn_detall_dataset' and 'bdns_detall_convocatoria' follow a consistent pattern of retrieval/detail-fetching operations.
Documented attack patterns abuse exactly the kind of access detall_subvencio 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 detall_subvencio:
{
"version": "1",
"default": "deny",
"tools": {
"detall_subvencio": {}
}
}detall_subvencio is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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detall_subvencio. 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 detall_subvencio: 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.
detall_subvencio 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 detall_subvencio 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 detall_subvencio. 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.
detall_subvencio 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.
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49 Mcp Govern tools catalogued and risk-classified — across an index of 43,000+ MCP servers.