AI agents call finance.security-resolve to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool resolves and retrieves financial security identifiers from external data sources (SEC, OpenFIGI, GLEIF). It is purely a read/lookup operation with no side effects — it fetches metadata about securities but does not execute trades, move money, or modify any data. Severity is low as misuse only exposes publicly available identifier data.
From the tool's definition Universal security-identifier resolver: give one of ticker, isin, or lei → get ticker, CIK, FIGI, LEI, ISINs, and issuer name (SEC + OpenFIGI + GLEIF)
Attacks that exploit this kind of access
Universal security-identifier resolver: give one of ticker, isin, or lei → get ticker, CIK, FIGI, LEI, ISINs, and issuer name (SEC + OpenFIGI + GLEIF). It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for finance.security-resolve: 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 Mcp. Nothing to install.
finance.security-resolve 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 finance.security-resolve 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 finance.security-resolve. 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.
finance.security-resolve is provided by the MCP server (@2sio/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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