Look up metadata for one or more series by numeric series id. Returns label, short_label, description (Portuguese by default), dataset_id, domain_ids, and dimension_category. Use this to identify a series and find which dataset_id holds its observations, then call get_dataset. NOTE: this endpoint...
Part of the Bpstat Pt server.
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AI agents call get_series_metadata to retrieve information from Bpstat Pt 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 get_series_metadata 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": {
"get_series_metadata": {}
}
}See the full Bpstat Pt policy for all 24 tools.
These attack patterns abuse exactly the kind of access get_series_metadata 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.
Look up metadata for one or more series by numeric series id. Returns label, short_label, description (Portuguese by default), dataset_id, domain_ids, and dimension_category. Use this to identify a series and find which dataset_id holds its observations, then call get_dataset. NOTE: this endpoint returns metadata only — it does NOT return the numeric values. lang defaults to PT.. It is categorised as a Read tool in the Bpstat Pt MCP Server, which means it retrieves data without modifying state.
Register the Bpstat Pt MCP server in PolicyLayer and add a rule for get_series_metadata: 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 Bpstat Pt. Nothing to install.
get_series_metadata 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 get_series_metadata 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 get_series_metadata. 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.
get_series_metadata is provided by the Bpstat Pt MCP server (https://gateway.pipeworx.io/bpstat-pt/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 Bpstat Pt tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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