AI agents call DatasetInfo to retrieve information from OpenBudget MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
DatasetInfo is almost certainly a metadata or information lookup tool—examining what datasets are available, their schemas, or attributes. This is a read-only operation with no side effects. Low severity due to operating on public governmental data. Confidence is 0.7 rather than higher because the empty description prevents full certainty.
From the tool's definition Tool name 'DatasetInfo' combined with server context (querying governmental budget datasets) suggests information retrieval. Description is empty, reducing confidence.
Documented attack patterns abuse exactly the kind of access DatasetInfo gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OpenBudget MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for DatasetInfo:
{
"version": "1",
"default": "deny",
"tools": {
"DatasetInfo": {}
}
}DatasetInfo is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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DatasetInfo. It is categorised as a Read tool in the OpenBudget MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenBudget MCP Server MCP server in PolicyLayer and add a rule for DatasetInfo: 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 OpenBudget MCP Server. Nothing to install.
DatasetInfo 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 DatasetInfo 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 DatasetInfo. 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.
DatasetInfo is provided by the OpenBudget MCP Server MCP server (openbudget/budgetkey-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from OpenBudget MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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3 OpenBudget MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.