Look up company ticker symbols, names, and CIK numbers. Search by ticker or company name.
AI agents call ticker_lookup to retrieve information from Publicfinance without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward data retrieval tool that queries a reference database to return company identifiers. It has no side effects, cannot modify data, and poses minimal risk even if misused by an AI agent—worst case would be retrieval of incorrect or irrelevant public company data.
From the tool's definition Tool performs lookup and search operations ('Look up company ticker symbols, names, and CIK numbers. Search by ticker or company name') with no modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
Look up company ticker symbols, names, and CIK numbers. Search by ticker or company name. It is categorised as a Read tool in the Publicfinance MCP Server, which means it retrieves data without modifying state.
Register the Publicfinance MCP server in PolicyLayer and add a rule for ticker_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 Publicfinance. Nothing to install.
ticker_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 ticker_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 ticker_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.
ticker_lookup is provided by the Publicfinance MCP server (leviai-ai/publicfinance-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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