Browse the CBS time-series catalog. With no subject_id, returns the top-level subjects (Foreign Trade, Population, Balance of Payments, Consumer Price Index, etc.) — each with a numeric path id. Pass that id back as subject_id to drill into a subject's full set of leaf series paths. The catalog i...
Part of the Cbs Il server.
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AI agents call catalog_browse to retrieve information from Cbs Il without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though catalog_browse only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"catalog_browse": {}
}
}See the full Cbs Il policy for all 24 tools.
These attack patterns abuse exactly the kind of access catalog_browse gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Browse the CBS time-series catalog. With no subject_id, returns the top-level subjects (Foreign Trade, Population, Balance of Payments, Consumer Price Index, etc.) — each with a numeric path id. Pass that id back as subject_id to drill into a subject's full set of leaf series paths. The catalog is hierarchical; each catalog entry has a 'path' breadcrumb array and a 'name'. Use this to discover what's available before calling get_series_data.. It is categorised as a Read tool in the Cbs Il MCP Server, which means it retrieves data without modifying state.
Register the Cbs Il MCP server in PolicyLayer and add a rule for catalog_browse: 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 Cbs Il. Nothing to install.
catalog_browse 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 catalog_browse 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 catalog_browse. 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.
catalog_browse is provided by the Cbs Il MCP server (https://gateway.pipeworx.io/cbs-il/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 24 Cbs Il tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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