Search recent SEC at-the-market (ATM) equity offerings from the past 72 hours. Pulls from S-3 / 424B5 family filings where our parser flagged ATM-offering indicators in the body language. Args: sales_agent: Filter by sales agent name (substring, case-insensitive). Examples: 'Cantor Fitzgerald', '...
Part of the FilingFirehose server.
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AI agents call search_atm_offerings to retrieve information from FilingFirehose 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_atm_offerings 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_atm_offerings": {}
}
}See the full FilingFirehose policy for all 4 tools.
These attack patterns abuse exactly the kind of access search_atm_offerings 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 recent SEC at-the-market (ATM) equity offerings from the past 72 hours. Pulls from S-3 / 424B5 family filings where our parser flagged ATM-offering indicators in the body language. Args: sales_agent: Filter by sales agent name (substring, case-insensitive). Examples: 'Cantor Fitzgerald', 'Jefferies', 'Roth Capital', 'H.C. Wainwright'. min_shelf_million_usd: Minimum shelf size in millions USD. limit: Max results (1-50, default 25). Returns: JSON list with shelf_size_usd, is_atm, sales_agents, use_of_proceeds_excerpt.. It is categorised as a Read tool in the FilingFirehose MCP Server, which means it retrieves data without modifying state.
Register the FilingFirehose MCP server in PolicyLayer and add a rule for search_atm_offerings: 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 FilingFirehose. Nothing to install.
search_atm_offerings 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_atm_offerings 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_atm_offerings. 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_atm_offerings is provided by the FilingFirehose MCP server (https://filingfirehose.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 FilingFirehose tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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