AI agents call get_ratings_history to retrieve information from Wrds without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves historical rating information from WRDS financial databases with no side effects. While financial data sensitivity is high, the tool itself performs only data retrieval without modification, execution, deletion, or financial transactions. Severity is low because misuse affects information access rather than system integrity or financial obligations.
From the tool's definition Tool name 'get_ratings_history' indicates retrieval of historical credit rating data; consistent with sibling tools (get_bond_price_history, get_bond_yield_history, get_credit_ratings) which are all read-only queries. Description is empty, limiting precision.
Attacks that exploit this kind of access
get_ratings_history. It is categorised as a Read tool in the Wrds MCP Server, which means it retrieves data without modifying state.
Register the Wrds MCP server in PolicyLayer and add a rule for get_ratings_history: 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 Wrds. Nothing to install.
get_ratings_history 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_ratings_history 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_ratings_history. 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_ratings_history is provided by the Wrds MCP server (marianosalinas/wrds_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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