Find BLS series IDs by keyword. Has ~35 common series (CPI components, employment by industry, unemployment demographics, JOLTS). Also returns CPI metro area codes (S12A=NYC, S23A=Chicago, S49A=LA, etc.) for constructing regional CPI series IDs. Use this before bls_get_series when you don
AI agents call bls_series_lookup to retrieve information from Econstats without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation against a reference database of BLS (Bureau of Labor Statistics) series identifiers and geographic codes. It has no side effects, does not execute arbitrary code, and does not create, modify, or delete data. It is a simple discovery/lookup mechanism designed to help users find the correct series IDs before calling data retrieval functions.
From the tool's definition Tool description states it 'Find[s] BLS series IDs by keyword' and 'returns CPI metro area codes'. It is a lookup/search utility that retrieves reference data without modifying state.
Attacks that exploit this kind of access
Find BLS series IDs by keyword. Has ~35 common series (CPI components, employment by industry, unemployment demographics, JOLTS). Also returns CPI metro area codes (S12A=NYC, S23A=Chicago, S49A=LA, etc.) for constructing regional CPI series IDs. Use this before bls_get_series when you don. It is categorised as a Read tool in the Econstats MCP Server, which means it retrieves data without modifying state.
Register the Econstats MCP server in PolicyLayer and add a rule for bls_series_lookup: 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 Econstats. Nothing to install.
bls_series_lookup 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 bls_series_lookup 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 bls_series_lookup. 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.
bls_series_lookup is provided by the Econstats MCP server (joshfwaldman1/econstats-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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