AI agents call get_release_sources to retrieve information from Fred without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves source information associated with FRED data releases. It performs a query operation with no side effects, data modification, code execution, or financial transactions. The empty description and 'get_' naming convention, consistent with other read-only tools on the server, confirm it is a straightforward data retrieval function.
From the tool's definition Tool name 'get_release_sources' combined with server purpose of 'querying and retrieving Federal Reserve Economic Data'; sibling tools all follow retrieval patterns (get_category, get_release, get_release_dates, get_related_tags).
Attacks that exploit this kind of access
get_release_sources. It is categorised as a Read tool in the Fred MCP Server, which means it retrieves data without modifying state.
Register the Fred MCP server in PolicyLayer and add a rule for get_release_sources: 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 Fred. Nothing to install.
get_release_sources 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_release_sources 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_release_sources. 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_release_sources is provided by the Fred MCP server (zachspar/fred-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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