Search for US public companies by name, ticker symbol, CIK (SEC identifier), or SIC industry code. Returns ticker, company name, sector, industry, exchange, and current S&P 500 membership status. Use this tool to resolve a company name to ticker/CIK before calling get_company_fundamentals, get_va...
Risk signalsAccepts freeform code/query input (query)
Part of the Valuein — SEC EDGAR Fundamentals & Smart-Money Data server.
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AI agents call search_companies to retrieve information from Valuein — SEC EDGAR Fundamentals & Smart-Money Data without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though search_companies only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"search_companies": {}
}
}See the full Valuein — SEC EDGAR Fundamentals & Smart-Money Data policy for all 68 tools.
These attack patterns abuse exactly the kind of access search_companies gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Search for US public companies by name, ticker symbol, CIK (SEC identifier), or SIC industry code. Returns ticker, company name, sector, industry, exchange, and current S&P 500 membership status. Use this tool to resolve a company name to ticker/CIK before calling get_company_fundamentals, get_valuation_metrics, or other tools that require a ticker — they do not fuzzy-match company names. Use this tool — NOT get_pit_universe — when the user asks about CURRENT S&P 500 members. To list current S&P 500 members, call this tool with no search parameters and filter results by sp500_member=true. This returns the live snapshot as of query time. Example: "List 5 current S&P 500 members" → call search_companies with no parameters, then filter by sp500_member=true and return the first 5. Use get_pit_universe ONLY when the user explicitly needs a survivorship-free historical universe as of a specific past date (e.g. "S&P 500 members as of March 2018"). If the user says "current," "today," "now," or gives no date, use search_companies instead. Data details: sic_code is the 4-digit SIC; industry is the human-readable label. sector is SIC-derived with GICS-style labels — NOT licensed GICS, so industrial conglomerates may map differently from official GICS (e.g. 3M → 'Health Care' by SIC vs Industrials by GICS). S&P 500 membership is sourced from index_membership.parquet (current SP500 = index_name='SP500' AND removal_date IS NULL). Available on all plans.. It is categorised as a Read tool in the Valuein — SEC EDGAR Fundamentals & Smart-Money Data MCP Server, which means it retrieves data without modifying state.
Register the Valuein — SEC EDGAR Fundamentals & Smart-Money Data MCP server in PolicyLayer and add a rule for search_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 Valuein — SEC EDGAR Fundamentals & Smart-Money Data. Nothing to install.
search_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 search_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 search_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.
search_companies is provided by the Valuein — SEC EDGAR Fundamentals & Smart-Money Data MCP server (https://mcp.valuein.biz/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 68 Valuein — SEC EDGAR Fundamentals & Smart-Money Data tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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