AI agents call fred_get_series 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 retrieves historical economic time series from FRED, a public database. It performs queries and fetch operations with optional formatting/transformation parameters, but does not create, modify, delete, or execute arbitrary operations. Even with transformations, the underlying operation is retrieval only. No financial transactions, code execution, or destructive actions are possible.
From the tool's definition Tool name 'fred_get_series' and description 'Fetch FRED time series data' indicate data retrieval with no modification. The optional transformations mentioned are read-only operations (unit conversions for display).
Attacks that exploit this kind of access
Fetch FRED time series data with optional transformations. CRITICAL: For inflation indexes (CPIAUCSL, PCEPILFE, PPI), use units=. 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 fred_get_series: 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.
fred_get_series 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 fred_get_series 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 fred_get_series. 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.
fred_get_series 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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