Search institutional investors (13F filers) by name. Returns matching institutions with CIK,
AI agents call search_institutions to retrieve information from Signal8 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a database of institutional investors and returns matching records. It performs a search operation that retrieves publicly available SEC filing information (13F data is public). No data is created, modified, deleted, or used to execute commands. The only side effect is read-only access to information, making it a Read category tool with low severity.
From the tool's definition Tool name 'search_institutions' and description 'Search institutional investors (13F filers) by name. Returns matching institutions with CIK' indicate pure data retrieval without modification.
Attacks that exploit this kind of access
Search institutional investors (13F filers) by name. Returns matching institutions with CIK,. It is categorised as a Read tool in the Signal8 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Signal8 MCP Server MCP server in PolicyLayer and add a rule for search_institutions: 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 Signal8 MCP Server. Nothing to install.
search_institutions 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 search_institutions 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 search_institutions. 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.
search_institutions is provided by the Signal8 MCP Server MCP server (signal8ai/signal8-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 →