AI agents call list_companies to retrieve information from Secfinapi without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves publicly available SEC financial data without creating, modifying, deleting, or executing any operations. It is a straightforward read operation with minimal risk, as it only lists or searches existing company information that is already public.
From the tool's definition Tool name 'list_companies' and description 'List or search the US public companies available in SECfinAPI' indicate a retrieval operation with no modification, deletion, or execution of code. It queries and returns public company data without side effects.
Attacks that exploit this kind of access
List or search the US public companies available in SECfinAPI. It is categorised as a Read tool in the Secfinapi MCP Server, which means it retrieves data without modifying state.
Register the Secfinapi MCP server in PolicyLayer and add a rule for list_companies: 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 Secfinapi. Nothing to install.
list_companies 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 list_companies 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 list_companies. 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.
list_companies is provided by the Secfinapi MCP server (michalperni11-gif/secfinapi-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.
Teams ship this data inside their own products. See what a licence covers →